II. NOTES ON DECAPODA IN THE 

 INDIAN MUSEUM. 



III. The Species obtained by R.I.M.S.S. ' Investigator ' 



DURING THE SURVEY SEASON I9IO-II. 



By Stani^ey Kemp, B.A., Assistant Superintendent , Indian 



Museum, and 



R. B. Seymour Sewell, B.A., Capt., I. M.S., Surgeon 

 Naturalist, Marine Survey of India. 



(Plate i.) 



During the season 1910-11 it was unfortunately only possible 

 to make four hauls of the trawl in deep water ; but at one of the 

 stations a large number of interesting Decapod Crustacea were 

 obtained and, inasmuch as many of these species appear to be 

 rare, we have thought it as well to draw up a few notes on the 

 collection. 



The only species hitherto undescribed is a Macruran of the 

 genus Merhippolyte, the first representative of the family Hippoly- 

 tidae which has yet been found in deep water off the coasts of 

 India. A small crab, allied to the genus Carcinoplax, also seems 

 to belong to a species as yet unknown ; this specimen is being 

 referred to Col. Alcock and is not included in the present account. 



Of the others in the collection perhaps the most interesting is 

 the male of Aristeomorpha rostridentata (Bate), a species previously 

 known from females only. Pentacheles hextii of xMcock is identified 

 with the Atlantic and Mediterranean Polycheles typhlops and our 

 knowledge of the distribution of several other scarce forms has 

 been considerably extended. 



The stations at which the collection was made are all situated 

 off the S.W. coast of India ; they are — 



St. 388. 26-iv-ii. 7° 44' 10" N., 76° 35' 45" E. 670 fathoms. 

 St. 389. 27-iv-ii. 9° 01' 50" N., 75° 55' 50" E. 81 



A considerable number of corals (Caryophyllinae) were 

 obtained at this station. 

 St. 390. 27-iv-ii. 9° 09' N., 75° 46' E. 260 fathoms. 



On this occasion the net caught on a rock and was badly torn. 

 No Decapoda were taken. 

 St. 391. 27-iv-ii. 9° 14' 10" N., 75° 45' E. 237 fathoms. 



This haul was remarkable for the large number of the Gas- 

 tropod, Xenophora pallidula, which were obtained. The 

 majority of the Decapoda which form the subject of the 

 present paper were found at this station. 



