t913.] 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 trifle 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 (¢.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 
