I9I4* J S. Kemp : Notes on Crustacea Decapoda. 117 



proportions of the abdominal somites, or in the characters of the 

 telson and uropods. 



I believe I am correct in referring these specimens to 

 H. kukenthali (de Man) ; at any rate I am unable to point to any 

 features in which they differ noticeably from his lengthy descrip- 

 tions. The examples recorded by Pearson in 1905 from the Ceylon 

 pearl banks under the name of Nauticaris unirecedens, Bate, 

 almost certainly belong to the same species. N. unirecedens , 

 Bate, as de Man has pointed out, is a synonym of H, vittata ; 

 but Pearson notes that in his specimens the rostral teeth are less 

 numerous than in those described in the ' Challenger ' Report. 



The specimens in the Indian Museum were caught during the 

 months of January and February and many of the females bear 

 eggs. _ ^ 



■■^^Yo ** ^- Cheval Paar, Ceylon, T. Southwell. Many, 20-32 mm. 



6 fathoms. 



The species is recorded by de Man from Ternate and Flores. 



Hippolysmata dentata, sp. nov. 

 Plate VI, fig. 5. 



This species differs from H. vittata in the following parti- 

 culars : — 



The rostrum, which is onl}^ slightly shorter than the carapace, 

 extends beyond the apex of the antennular peduncle (fig 5). 

 Dorsally it is provided with seven or eight teeth, the hindmost 

 of which, as in vittata, is situated just in front of the middle of 

 the carapace and is separated by a considerable interval from 

 the next of the series. On its inferior margin it is furnished 

 with six or sev^er teeth which are as large as those above. The 

 pterygostomian ,pine on the antero-lateral angle of the carapace 

 is much more prominent than in H. vittata, but is not nearly as 

 large as the antennal. 



The eyes are short and reach only to half the length of 

 the basal segment of the antennular peduncle; the cornea is 

 a little wider than the stalk. The antennular peduncle reaches 

 almost or quite to the apex of the antennal scale and its lateral 

 process scarcely extends as far as the eyes ' 



The form of the antennal scale is similar to that of H. vittata 

 but in the larger (type) specimen the apical spine reaches well 

 beyond the lamellar part. 



The oral appendages, maxillipedes and first peraeopods 

 resemble those of H. vittata \ in the chelae of the first pair the 

 fingers meet only at the tips when the claw is closed. In the 

 second peraeopods the carpus is composed of from 20 to 22 



1 In the smaller of the two examples this process is considerably shorter 

 than the eyes, which themselves reach well beyond the middle of the basal 

 peduncular segment. 



