1913.| S. Kemp: Crustacea Stomatopoda of the Indo-Pacific Region. 47 
carinae ; the latter are very sharp on the anterior portions of the sixth and seventh 
somites and, in the fifth, are frequently produced as a small acute outstanding pro- 
cess. he fifth somite bears a pair of teeth on its inferior margin and, on each side, 
extends laterally as a single long and straight lobe, which ends acutely, but does not 
trend forwards as in many of the allied species. The lateral margins of the sixth and 
seventh somites consist of a single lobe, which is obliquely truncate and sinuous ante- 
riorly and terminates posteriorly in a sharply acute point. 
The abdominal somites are broad and greatly depressed. ‘The first five possess 
eight well-marked longitudinal carinae and on each of them, except the first, a small 
but conspicuous transversely-grooved median tubercle is present. The last somite has 
six carinae and the spines that terminate the submedian and lateral pairs are very 
long, especially the latter. The complete spine formula is :— 
Carinae. Abdominal somutes. 
Submedian se a ns 6. 
Intermediate Ee or aio UGE Po SZ SiO 
Lateral .. ae e a Fy ey Shyer SO 
Marginal sc 30 oc lis Bal sie lps 
The telson is very characteristic and shows little resemblance to that of any of 
the previously described species. Its peculiar appearance is due to the enormous 
development of the marginal and dorsal teeth, to the great elevation of the median 
carina and to the very deep incision between the submedian teeth. The form of the 
telson is moreover extremely broad and, if the marginal teeth are omitted, is only 
about half as long as wide. ‘The dorsal carina is very high and very sharp, the basal 
notch is obsolete and the distal spine is strong and sharp, extending to fully half the 
length of the submedian teeth. The latter are quite two-thirds as long as the rest of 
the telson and are widely divergent posteriorly. On their inner margins they bear 
from ten to eighteen minute spinules, which are closely set proximally. The inter- 
mediate teeth are even longer than the submedian and are somewhat inturned, espe- 
cially in the male; there are nine to twelve intermediate denticles, one or two of 
which are frequently situated on the outer margin of the submedian spines. In the 
female there is a small lateral denticle and the lateral tooth is long, reaching nearly to 
half the length of the intermediate. In the male the lateral tooth is short and greatly 
swollen at the base, completely obscuring the lateral denticle. There is also, in this 
sex, a well-marked swelling at the base of the intermediate teeth and this extends 
inwards along the interspinous margin. ‘The mid-dorsal carina is not dilated in the 
male. ‘The post-anal carina is short but distinct. 
The bifurcate prolongation from the base of the outer uropod is composed of two 
very long and slender spines. The inner, which does not greatly exceed the outer, is 
very nearly half the length of the entire segment and bears in the distal third of its 
external margin only a minute rudiment of the usual lateral lobe. The outer uropod 
is not more than two and a half times as long as wide in the adult male; in a female 
of the same length it is much narrower, about three times as long as wide. 
Two female specimens have the denticles on the telson arranged as in Jurich’s 
