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Figure 4 in New records of Pegantha spp. (Hydrozoa: Narcomedusae) off Northern Brazil

Figure 4. Global distribution of the narcomedusa Pegantha triloba based on this study and literature records. The dashed line shows the 250 m isobath, roughly corresponding to the shelf break (generated using Ocean Data View software; Schlitzer, 2007). Data Source: 1 = this study; 2 = Haeckel, 1879; 3 = Bigelow, 1909; 4 = Vanhöffen, 1913; 5 = Kramp, 1948a; 6 = Kramp, 1948b apud Kramp, 1961; 7 = Ranson, 1949; 8 = Kramp, 1957; 9 = Kramp, 1959b; 10 = Bouillon et al., 1988; 11 = Bouillon et al., 1986; 12 = Chang, 2008; 13 = Du et al., 2012; 14 = Kramp, 1965; 15 = Larson, 1982; 16 = Loman-Ramos et al., 2007; 17 = Ayón et al., 2008; 18 = Baldrich & López, 2010; 19 = Navas-Pereira & Vannucci, 1990; 20 = Navas-Pereira & Vannucci, 1991; 21 = Pagès, 1992; 22 = Pagès et al., 1992; 23 = Segura- Puertas, 1984; 24 = Segura-Puertas, 1991; 25 = Suárez-Morales et al., 2002; 26 = Vannucci & Navas, 1973; 27 = Xu & Wu, 1998; 28 = Suárez-Morales et al., 1999; 29 = Segura-Puertas, 1992; 30 = Bleeker & Van Der Spoel, 1988; 31 = Chaparro & Peralta, 2013; 32 = Repelin, 1965; 33 = Chaparro, 2007; 34 = Muñoz-Pozo, 2015; 35 = Vanhöffen, 1912 apud Kramp, 1961; 36 = Fernández-Álamo, 2002.

Figure 3 in New records of Pegantha spp. (Hydrozoa: Narcomedusae) off Northern Brazil

Figure 3. Global distribution of the narcomedusa Pegantha laevis based on this study and literature records. The dashed line shows the 250 m isobath, roughly corresponding to the shelf break (generated using Ocean Data View software; Schlitzer, 2007). Data Source: 1 = this study; 2 = Bigelow, 1909; 3 = Kramp, 1955; 4 = Kramp, 1957; 5 = Kramp, 1959a; 6 = Kramp, 1959b; 7 = Kramp, 1965; 8 = Fagetti, 1973; 9 = Bouillon et al., 1986; Bouillon, 1978; 10 = Navas-Pereira & Vannucci, 1990; 11 = Pagès et al., 1992; 12 = Buecher et al., 2005; 13 = León et al., 2005; 14 = Ayón et al., 2008; 15 = Genzano et al., 2008; 16 = Rodriguez, 2012; 17 = Gasca & Browne, 2017.

Figure 2 in New records of Pegantha spp. (Hydrozoa: Narcomedusae) off Northern Brazil

Figure 2. Pegantha triloba medusae from North Brazil. (A and B) Oral view. (C) Detail of marginal lappet and otoporpae. (D) Aboral view showing furrows and ridges on exumbrella. (E) Detail of tri-lobed gonads. Arrows indicate some otoporpae.

Figure 1 in New records of Pegantha spp. (Hydrozoa: Narcomedusae) off Northern Brazil

Figure 1. Pegantha laevis medusa from North Brazil. (A) Aboral view. (B) Detail of marginal lappet and peripheral channel.

FIGURE 4 in Bathykorus bouilloni: a new genus and species of deep-sea jellyfish from the Arctic Ocean (Hydrozoa, Narcomedusae, Aeginidae)

FIGURE 4. Horizontal and vertical distribution of Bathykorus bouilloni in the Canada Basin, Northwind Ridge and Chukchi Plateau Region, summer 2005. The number of individuals observed per hour by the ROV is presented in 100m depth bin intervals, from the surface to the maximum depth achieved for a particular station (see Table 1). The bottom depth, when within the ROV's depth range, is shown in gray.

FIGURE 1. Bathykorus bouilloni. All photographs obtained from a live specimen. A in Bathykorus bouilloni: a new genus and species of deep-sea jellyfish from the Arctic Ocean (Hydrozoa, Narcomedusae, Aeginidae)

FIGURE 1. Bathykorus bouilloni. All photographs obtained from a live specimen. A. Entire swimming medusa showing the positions of the primary and secondary tentacles, as well as the three interradial manubrial pouches per quadrant. B. Close up view of the base of the secondary tentacle and statocyst showing the 7 statoliths. sc, statocyst; st, secondary tentacle (scale bar = 200 µm). C. Close up view of the entire secondary tentacle (scale bar = 200 µm). D. Aboral view of one full quadrant of the medusa. m, mouth; mp, manubrial pouch; pt, primary tentacle; st, secondary tentacle; rt, tentacular root (scale bar = 1000 µm). E. Close up of the primary tentacular root (rt) (scale bar = 1000 µm).

FIGURE 3 in Bathykorus bouilloni: a new genus and species of deep-sea jellyfish from the Arctic Ocean (Hydrozoa, Narcomedusae, Aeginidae)

FIGURE 3. Histogram of nematocyst sizes in Bathykorus bouilloni. Nematocyst diameters (n=105) were measured from a random assortment of microscopic video stills taken of a live specimen. There are two statistically different size classes (Mann-Whitney rank sum, P = <0.001).

FIGURE 2 in Bathykorus bouilloni: a new genus and species of deep-sea jellyfish from the Arctic Ocean (Hydrozoa, Narcomedusae, Aeginidae)

FIGURE 2. Cnidome of Bathykorus bouilloni. A. Primary tentacle showing the characteristic endodermal chordal cells (ch) inside the tentacle and the asymmetrical distribution of the nematocysts on the aboral (right) side of the tentacle (nc). B. Close up view of chordal cells and cellular matrix at the core of the tentacle. C. Undischarged nematocysts on tentacle showing the two main size classes. Coiled threads can be seen inside the capsules. D. Discharged large and small apotrichous isorhizae nematocysts. All scale bars = 50µm.