554 Memoirs of the Indian Museum. [Voi,. V. 



ment ; the carpus and propod are similar to those of the first gnathopod of the 

 female and are similarly armed with long plumose setae but they are considerably 

 more slender. • 



The third uropod has only one branch as in G . megnae but in old specimens this 

 branch becomes somewhat more elongated than in that species. 



Colour. Iyight yellow with dark patches or reticulate markings, particularly on 

 the dorsal surface. 



Length of body, about 7 mm. 



The general resemblance of this species to G. megnae is so great that I place it 

 in the same genus. In the long plumose gnathopods it somewhat resembles Xeno- 

 cheira Haswell, a genus which Chevreux rightly places in the Aoridae, but in Xeno- 

 cheira the terminal uropoda are two-branched. 1 



Photis longicaudata (Bate and Westw.). 



(Text-fig. 12.) 



Eiscladus longicaudatus Bate and Westwood, 1862, Vol. I,, p. 412 (text-fig.). 



Photis longicaudata Stebbing, 1906, p. 608. 



Photis longicaudata Walker, 1904, p. 286, pi. vi, fig. 43. 



Photis longicaudata Walker, 1909, p. 339. 



Photis longicaudata Barnard, 1916. p. 243, pi. 28, fig. 26. 



Photis longicaudata Chevreux, 1910, p. 249. 



Locality. Middle of lake N.E. -J B. of Kalidai. A few small specimens, take in 

 mid water. 



These specimens are small, only about 3mm. in length, and I think they are the 

 same as those of the same size referred to this species by Walker from the west coast 

 of Ceylon. Barnard has recorded the species from Natal and other localities in South 

 Africa, and has given a description of his specimens. The Chilka I^ake specimens 

 agree on the whole with Barnard's description, but have the ocular lobe shorter and 

 the antennae with fewer joints in the flagellum. The gnathopods (figs. 12a, b) are 

 slender and agree rather with the figure given by Walker than with that given by 

 Barnard, there being no sign of the " blunt nodiform tooth just below the apex of the 

 emargination on the inner surface of the palm ' ' in the second gnathopod ; the carpus 

 in the second gnathopod is produced into a narrow process extending nearly half way 

 along the hind margin of the propod, being apparently considerably longer and 

 narrower then in Walker's specimens. The uropods in the small Chilka L,ake speci- 

 mens have the branches almost free from setae. 



1 I do not feel confident that Grandidierella megnae and G. gilesi can be retained in the same 

 genus, but I am not attempting at the present time to discuss the validity or the affinities of the genus 

 Grandidierella. The species Hansenella longicornis, for which Chevreux established the genus Hanse- 

 nella in 1909, presents many resemblances in its appendages to Grandidierella megnae. Chevreux says 

 that Hansenella is very close to Microdeutopus and it has the third uropod two branched as in the 

 genus, but in Hansenella the first gnathopoda of the female have quite the same aspect as the corres- 

 ponding appendages in the males of Microdeutopus and of Grandidierella. 



