XXI. NOTES ON CRUSTACEA D E C A P O D A 

 IN THE INDIAN MUSEUM. 



VII. Further Notes on Hippolytidae. 



By vStanley Kemp, B.A., Superintendent, Zoological Survey 



of India. 



(Plate XXXVI). 



Although onl}' two years have elapsed since my previous paper 

 on the Indian Hippolytidae was published, a number of interest 

 ing forms have come to light, obtained partly during the recent 

 cruises of the 'Investigator' by Capt. R. B. Seymour Sewell, 

 I. M.S., partly by Dr. Annandale in Japan, and partly by myself 

 during a short visit to Port Blair in the Andamans. 



The Hippolytid fauna of Port Blair is one of great richness. 

 During three weeks' collecting, fully half the known Indian species 

 of the family were met with, enabling me to obtain notes on the 

 natural colouration of several forms hitherto unknown in this 

 respect. In addition, three forms were found that had not pre- 

 viously been recognised, one representing a new generic type. 

 Of these, Thor discosomatis is of particular interest owing to the 

 fact that it lives commensally with a large anemone of the genus 

 Discosoma, and is most peculiar in its colouration ; the species of 

 Phycocaris, gen. nov. , is extremely grotesque in appearance and 

 closely mimics the weed among which it lives. 



Borradaile, in a recent paper,' has briefly described a genus 

 and three new species of Hippolytidae from the Maldives, the 

 Seychelles and other localities. If my identification is correct, 

 two of these, Thor maldivcnsis and Lysmatella prima (the latter 

 the type of the new genus), occur in the Andamans; but I am 

 inclined to think that Lysmatella should at most be distinguished 

 only subgenerically from the closely allied Hippolysmata. Ex- 

 Jiippolysniata , recently proposed by Stebbing"^ to include Hippolys- 

 mata ensirostris and a nearly related form from S. Africa, does not 

 appear to differ sufficiently to warrant either generic or subgeneric 

 separation. 



Genus Saron, Thallwitz. 

 Saron marmoratus (Olivier). 



1 914. Saron viavnioratiis, Kemp, Rec. hid. Mus., X, p. 84. 



A number of specimens of this well-known species were ob- 

 tained at Port Blair ; the majority were found under stones left 



' Borradaile, Ann. Mag. Nat. Hist., (8), XV, pp. 206, 208 (1915). 

 . '^ Stebbing, Ann. S. African Mus., XV, p. 94 (1915)- 



