NO. 3666 CRUSTACEIA—-TIRMIZI AND MANNING 45 
somite are green. In females, the telson carinae and margins are 
primarily orange, whereas in males they are green and blue green. 
Discusston.—Manning (1968b) described O. hesperia from a single 
female taken off Madagascar. In his account, he pointed out that 
O. hesperia was very similar to O. massavensis in general appearance 
and he suggested that records of O. massavensis from localities south 
of the Red Sea actually might be referable to 0. hesperia. Examination 
Ficure 17.—Oratosquilla hesperia (Manning), female, TL 92 mm, off Karachi: a, outline of 
anterior portion of carapace and rostral plate; b, lateral processes of fifth, sixth, and 
seventh thoracic somites. Basal prolongation of uropod: c, male, TL 52 mm; d, female. 
TL 92 mm; e, female TL 101 mm. 
of specimens in the British Museum from Zanzibar (1c, 104 mm; 
19, 75 mm; not registered), Muscat (1c, 34 mm; reg. no. 87-16), 
and Aden (1c, 42 mm; reg. no. 1894.5.16.4), all of which are 
O. hesperia rather than O. massavensis, bear out this suggestion. 
Oratasquilla hesperia differs from O. massavensis in several important 
features as follows: (1) the rostral plate is shorter and broader, and 
the lateral margins are rarely markedly concave as in 0. massavensis; 
(2) the submedian carinae of the abdomen are divergent on each so- 
