1913-] S. Kemp: Crustacea Stomatopoda of the Indo-Pacific Region. 99 



between the intermediates and laterals is concave or slightly sinuous with a small 

 spinule at the base of the latter. The ventral surface of the telson is smooth. 



The external margin of the peduncular segment of the uropod is rounded; 

 dorsally there is a blunt longitudinal carina which is produced as a spine over the 

 articulation of the basal segment of the exopod. The ventral process is long, reaching 

 almost to the apex of the exopod; distally it is cut into two strong Spines, the inner 

 of which is usually a trine longer than the outer. There are seven to nine movable 

 spines on the outer margin of the proximal segment of the exopod ; the terminal one, 

 which is the longest, fails to reach, or only just reaches the distal end of the ultimate 

 segment. On the ventral surface there is a single fixed spine at the distal end. The 

 paddle or ultimate segment of the exopod is at least three-quarters the length of 

 that which precedes it. 



The colour of spirit specimens is not specially distinctive ; the large eye-spot on 

 either side of the carapace, which occurs in some of the allied species, is missing. Clark 

 (1869, sub Squilla stylifera) has given a most interesting account of the habits of this 

 species and has described the colour of the living animal as follows : — 



' ' When first hatched the larvae are of a delicate yellowish green , and are very- 

 active. As they grow they assume a mottled grey, and the swimmerets and legs 

 become pea-green. The green gradually increases in brightness, but it is not till they 

 have reached a length of three inches that the colours of the adult appear. The male is 

 then of a beautiful bluish green, with the jaw-feet, the swimmerets, and the branchiae, 

 as well as the antennae and the fimbriae which border the different organs, of a cherry- 

 red. The female is clouded with brown and grey, presenting much the appearance of 

 tortoise shell, and the red about her is much less vivid than in the male.' ' 



Specimens preserved in formalin and examined shortly after capture were of a 

 uniform dull olivaceous yellow, very faintly mottled with white laterally, and tending 

 to a slightly redder shade on the telson and to a green tone on the inner and outer 

 uropods. The antennal and antennular peduncles, the base of the antennal scale, and 

 the raptorial claw were mottled with dull yellow and white and the raptorial dactylus 

 was in addition marbled with red. The other thoracic and abdominal appendages 

 were olivaceous, sometimes faintly mottled and all the fringes of setae were red. 



According to Brooks' observations (1886) Atlantic specimens of this species differ 

 in certain small details from those found in the Indo-pacific seas, and Borradaile (1899) 

 proposed to distinguish the former by the name var. occidentalis. Bigelow, however, 

 in 1902, supplied a description and good figures of the Atlantic specimens from which it 

 appears that only one character (i.e. the presence or absence of a postero-lateral spine 

 on the fourth abdominal somite) remains to distinguish the two forms. Now that 

 Tattersall has found by actual comparison that a specimen from Ceylon possesses all 

 the characters which Brooks noted as distinctive of his West Indian specimens, there 

 seems little to justify Borradaile' s statement in 1907 that " it is not clear if the true P. 

 ciliata is found in the Atlantic' ' 



Of the sixteen specimens, all from Indo-pacific waters, which are preserved in the 



