obtained in the Indian Seas. 237 



mm. 



Length of rostrum 13 



„ campiico 56 



„ abdomen 88 



„ antennal scale 30-5 



Breadth of „ „ 14'5 



Length of sixth abdominal segment 22 



„ telson 24-4 



,, inner uropod 26 



„ outer „ 29 



It agrees in all details with descriptions of this species, 

 exeept as regards the relative lengths of sixth aI)dominal 

 segment, telson, and endopodites of tail-fan. The sixth 

 abdominal segment is slightly shorter than the telson, and 

 the telson is not qnite so long as the endopodite of the tail- 

 fan. 



A sternal tnbcrcle is present in the female between the 

 bases of the first pair of abdominal appendages. The erest- 

 like dorsal carina on the third abdominal segment occurs 

 only on the posterior two thirds. 



The " thelycnm '' is peculiar. Between the bases of the 

 fourth pair of legs a prominent central papilla stands. 

 Towards this pajAlla a hairy process passes inwards and 

 backwards from the base of each of the third pair of legs, 

 and from the base of each of the fourth pair of legs a tongue- 

 shaped process projects inwards and backwards posterior to 

 the papilla. The papilla thus stands in the centre between 

 the tips of these four processes. 



Fara. Pandalidae. 

 Heterocarpus, a. M. -Edwards. 



Heterocarpiis lon<jirostris, sp. u. 



At Sta. 310, Bay of Bengal, 96U fathoms, two males of 

 this species were trawled. Of known species they are most 

 closely allied to H. leevigatus, from which they differ only in 

 the following characters : — • 



The rostrum is straighter and much longer (being about 

 If times the length of the carapace) and is multiserrate 

 dorsally, the teeth being j^^-^^ ; the orbital spine is much 

 larger, it is as large and projects qnite as far as the branchio- 

 stegal spine; the blunt carina of the third abdominal somite 

 is posteriorly acutely produced to a bluntish point, and is 

 not merely strongly convex ; the sharp antennuhir scale is 

 shorter, it falls well short of the extremity of the second 



