Tg913. | S. Kemp: Crustacea Stomatopoda of the Indo-Pacific Region. 43 
The dorsal surface of the carapace is smooth and as a rule highly polished ; the 
abdomen is very obscurely rugose. The breadth of the carapace, measured behind 
the antero-lateral angles, is barely half its length, excluding the rostrum. The median 
carina is distinct in front of the cervical groove (fig. 30), but is obsolete anteriorly. 
The small median dorsal pit is clearly visible and is placed nearer to the cervical groove 
than to the anterior margin. The intermediate carinae are well-marked ; the lateral 
also are well-developed anteriorly and posteriorly, but are usually obsolete in the 
middle. The antero-lateral angles terminate in stout spines which, owing to the strong 
convexity of the anterior margin, fail to reach the level of the rostral base. Beneath 
each antero-lateral spine there is a small blunt or subacute lobe. The postero-lateral 
angles of the carapace are rounded. 
The rostrum is a trifle longer than broad ; its straight lateral margins are not up- 
turned and converge to a rounded apex. Dorsally the rostrum is smooth except for 
a sharp and distinct median longitudinal carina in its distal half. 
The eyes are small and elongated ; the breath of the cornea is about equal to the 
length of the stalk (cornea excluded), and the corneal and peduncular axes are decid- 
edly oblique. The antennular peduncle is short, scarcely two-thirds the length of the 
carapace. The two basal segments of the antennal endopodite are also short, the distal 
one not reaching to half the length of the scale. The mandibular palp is wholly 
absent. 
The outer inferior margin of the merus of the raptorial claw is bluntly rounded 
anteriorly. The carpus bears the usual groove on its external aspect and its dorsal 
carina is entire and terminates acutely before reaching the distal margin. The distal 
end of the propodus is considerably broader in the male than in the female. The 
dactylus bears five teeth including the apicalone. The outer margin is furnished with 
a small proximal lobe ; it is convex in the male but distinctly sinuous in the female. 
There are faint submedian and strong intermediate carinae on the last three 
thoracic somites. The fifth somite bears a pair of broad tooth-like lobes inferiorly ; the 
lateral lobe consistsof a single strong falcate process terminating in a sharp forwardly- 
directed spine. An oblique carina, which commences on the dorsal aspect of the 
somite in the position usually occupied by the intermediate carina, extends down- 
wards and is continuous with the posterior margin of the process. The antero-lateral 
margins of the fifth somite are elevated and form a distinct ridge. The lateral margins 
of the sixth and seventh somites are rounded; the eighth projects as a blunt 
anterior lobe. 
The first five abdominal somites possess four pairs of longitudinal carinae, but the 
submedians are not very strongly marked. The two median pairs of carinae on the 
sixth somite are distinctly swollen in the male. The following carinae end in spines :— 
Carinae. Abdominal somites. 
Submedian Si te id 6. 
Intermediate ie ZA ae BG: 
Lateral .. ie as oe 5, 6. 
Marginal .. ate ae «= (3) (4) 5» ©. 
e 
