1913O S. Kemp : Crustacea Stomatopoda of the Indo-Pacific Region. 47 



carina e ; 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. The 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 somites. 



Submedian . . . . . . 6. 



Intermediate .. .. .. (1)2,3,4,5,6. 



Lateral .. .. .. .. 1,2,3,4,5,6. 



Marginal .. .. .. 1,2,3,4,5. 



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 notch is obsolete and the distal spine is strong and sharp, extending to fully half the 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 



