FIGURE 4 in New taxa and arrangements within the family Latrunculiidae (Demospongiae, Poecilosclerida)

FIGURE 4. Megascleres and microscleres of Latrunculia (Latrunculia) austini Samaai et al. 2006: A–D. Anisodiscorhabds from holotype RBCM 982-62-1 showing variations, scale = 10 µm; E. Typical anisodiscorhabd from Gulf of Alaska specimen NHMUK 2008.3.27.3, scale = 10 µm; F. Megascleres shown at full length, scale = 100 µm; G. Smooth proximal and distal tips of megasclere, scale = 10 µm; H. Protorhabd showing well-separated basal whorl progenitor above manubrium, scale = 10 µm; I–J. Malformed anisodiscorhabds with deficient or absent apical whorls and indistinguishable basal whorl and manubrium, scale = 10 µm; K–N. Anisodiscorhabds with semi-differentiated basal whorl and manubrium, scale = 10 µm; O–R. Anisodiscorhabds with manubrium completely separate from basal whorl, scale = 10 µm; Fig. 4F–Q images taken from specimen RBCM 015-00478-001, Queen Charlotte Sound, British Columbia. Fig. 4A–D reproduced from Samaai et al. (2006, Fig. 1O).