Figure 18 in Taxonomy and diversity of hydroids (Cnidaria: Hydrozoa) of Sergipe, Northeast Brazil

Figure 18. (A-B, D) Halopteris carinata: (A) detail of a stem showing few hydrocladia and hydrothecae; (B) detail of stem with two female gonotheca; (D) detail of few hydrocladia with three male gonothecae (red arrows); (C, G) Monostaechas quadridens: (C) general view of a colony; (G) detail of a hydrocladium ramification with two gonothecae (red arrows); (E-F) Halopteris alternata: (E) detail of a stem showing hydrocladia and hydrothecae; (F) detail of a stem ramification with three gonothecae (red arrows); (H-I) Halopteris tenella: (H) detail of a stem with hydrocladia, hydrothecae and gonothecae; (I) detail of a stem with gonothecae (red arrows).