1913.] S. Kemp: Crustacea Stomatopoda of the Indo-Pacific Region. 79 
close to the small mid-dorsal pit. The lateral margin is obtusely angled in front of 
the rounded postero-lateral corners as in S. foveolata. Both carapace and abdomen 
are deeply and rather coarsely punctured. 
The lateral margins of the rostrum are upturned and converge to a truncate apex. 
The corneal portion of the eyes is greatly expanded and is set obliquely on the stalk. 
The corneal index varies from 3:7 to 4:2 and in one specimen, which is quite excep- 
tional among Indian examples, is as much as 4°9. The anterior margin of the 
ophthalmic somite is rounded. 
The outer inferior margin of the merus of the raptorial claw terminates in a rounded 
angle, and is not toothed. The dorsal carina of the carpus is entire or with a very 
obscure tubercle and ends abruptly before reaching the anterior margin. ‘The outer 
margin of the dactylus is evenly convex throughout its length and the teeth on its inner 
margin are long and slender. 
The anterior of the two spines on the margin of the fifth thoracic somite is 
situated at a lower level than the posterior. The lateral lobes of the sixth somite are 
about equal in length and breadth ; the posterior lobe is sharply pointed, the anterior 
more or less obliquely truncate. Both processes of the seventh somite are acute, the 
anterior being both shorter and narrower than the posterior. 
As already mentioned the lateral carinae of the first five abdominal somites are 
sharply bicarinate. This unusual feature is very distinct in adults and the narrow 
area between the two carinulae is coarsely pitted; in very young individuals the 
bicarination is inconspicuous. ‘The following abdominal carinae end in spines :— 
Carinae. Abdominal somites. 
Submedian 3 ae Bi 5, 6. 
Intermediate af Pe: Bs Bip 2 yop We 
Lateral 5 =e cel 253) 405 10: 
Marginal EY ae fe aay lee 
The marginal teeth of the telson are unusually long and the denticles are excep- 
tionally numerous. Of the latter there are five or six submedians, twelve to sixteen 
intermediate,' and one lateral. 
In the bifurcate process from the base of the uropods, the lobe on the outer margin 
of the longer spine is small or obsolete in adults, but is usually quite distinct in very 
small specimens. 
In very young examples, also, the median projection on the posterior margin of the 
carapace is exceptionally well developed and the rostrum, as noticed in small indivi- 
duals of some of the preceding species, is more strongly narrowed anteriorly. 
A single very large specimen from Japan, the only individual known from any 
locality outside the Bay of Bengal, differs from the Indian examples in the following 
particulars :— 
1. The carapace is distinctly broader ; its breadth at the antero-lateral angles 
is exactly half the median length. The median carina of the carapace is 
' In one specimen, which appears to be abnormal in this respect, there are only ten intermediate 
denticles. 
