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Records of the Australian Museum (2014) Vol. 66 
Figure 27. Acutiramus cumulus sp. nov. Female: (A) adult (with attached protozoa); (B) genital double-somite; (C) P4 endopod; (D) P5 
(ventral); (F) left caudal ramus; (G) rostrum. Male: (E) adult. Scale bar: A = 0.42 mm. B, D = 0.16 mm. E = 0.38 mm. F = 0.07 mm. G 
= 0.13 mm. 
Adult males (Fig. 27E) colourless. Anterior of cephalo- 
some truncated, convex in midline above the rostrum and 
slightly concave on either side with pointed shoulders. 
Rostrum not pointed, obscured from above by cephalosome 
(Fig. 28A). Dorsal pits as for female. Caudal ramus (Fig. 
28E) quadrate, lateral edge convex, dorsal surface with 
rows of conspicuous pits, a and (3 setae not close (% length 
of ramus apart). Terminal seta T1 pinnate, recessed at 
lateral comer, T2 and T3 pinnate close together in middle of 
posterior border, T4 small set in from rounded medial corner. 
Antennule (Fig. 29B) sensory lobe on segment 4 does not 
have a blade-like (acuminate) process, all setae less than 
