1922.] S. Kemp: Notes on Crustacea Dtcciboda. 191 



soma at Port Blair. Much careful observation in the field is neces- 

 sary before we can come to any conclusions regarding the significance 

 of the colour pattern or the exact nature of the relations that 

 exist between the prawn and the anemone. 



At Port Blair P. brcvicarpalis was found at low water, either 

 beneath the fringe of tentacles of the anemone, crawling on the 

 disc or swimming in the immediate vicinity. I have not myself 

 seen it enter the mouth of the anemone, though it is not improb- 

 able that it may do so. On several occasions, both at Port Blair 

 and in the Gulf of Manaar the species has been taken in nets hauled 

 in shallow water. I think that its occurrence under these condi- 

 tions is to be explained by the assumption that the net passed 

 over an anemone in its passage along the bottom. I have fre- 

 quently seeu the anemone at Port Blair in 10 feet of water. 



The following specimens are in the collection of the Zoological 

 Survey of India : — 



C 360/1. Kilakarai, G. of Manaar. S. Kemp, Feb., 1913. Two. 



9299/6. Spike I., Andamans. ' Investigator,' Nov., 1888. One. 



2966-707.*) Gt. Coco I;, Andaman ' Investigator,' Nov., 1890. Twelve. 



2984-90/7. ) group. 



C 361-2/1. Port Blair, Andamans. S. Kemp, Feb., March, Forty-five. 



1915 ; Febr., 1921. 



In the British Museum I have examined specimens from 

 Murray I., Torres Straits (Potts coll.) and a much damaged indivi- 

 dual from Singapore (Bedford and Lanchester coll.). In the Paris 

 Museum I have seen the specimen from Bahrein I. in the Persian 

 Gulf, recorded by Nobili as Ancylocaris aberrans ; also one from 

 Pulo Condore (Germain coll.) labelled " corps gelatineuse, taches 

 jaunes, " and one from Vanikoro in the Santa Cruz group, Oceania, 

 labelled " sur actinie." 



The species is recorded from Zanzibar, Kokotoni and Bawi in 

 E. Africa (Lenz), from Djibouti in the Red Sea (Nobili), from Bahr- 

 ein I., Persian Gulf (Nobili), from Macassar (Schenkel) from Hermite 

 I., N.W. Australia (Rathbun) and from the Torres Straits (Borra- 

 daile). The specimens figured by Richters from Mauritius and by 

 Saville-Kent from the great Barrier Reef of Australia probably also 

 belong to this species. 



Periclimenes (Ancylocaris) inornatus, sp. nov.* 



This species is closely allied to P. brevicarpalis and is also 

 found in association with anemones of the genus Discosoma. The 

 two species differ in the following particulars : — 



P. brevicarpalis Sch. 



Rostrum with 5 to 7 dorsal teeth, the 

 foremost not placed close to apex. 



Carapace greatly swollen dorsally in 

 adult females. 



Hepatic spine of carapace situated on 

 a much lower level than antennal. 



P. inornatus, sp. no v. 



Rostrum with 7 or 8 dorsal teeth, the 

 foremost placed close to apex and often 

 giving it a bifid appearance. 



Carapace not swollen dorsally. 



Hepatic spine of carapace situated 

 nearly on a level with antennal. 



