524 Memoirs of the Indian Museum. [Vol,. V, 



reaching to one- third the length of the last joint of the peduncle of the lower antenna. 

 The two antennae are subequal in the female specimens I have examined, but the upper 

 one is shorter than the lower in the male. In some other species the upper one varies 

 much in length at different stages of development. As regards the telson the vari- 

 ous descriptions agree as to its being divided almost to the base and having the 

 divisions pointed. Walker states that there are three spines before the point on the 

 outer margin. Sars gives two and Stebbing says that there is only one apical spinule 

 in the Australian specimen ; there is only one in the Chilka Lake specimens that I 

 have examined. Sars says the telson is without dorsal denticles ; in one female 

 examined I found one minute dorsal denticle on one lobe but none on the other. 



These and other points in the structure of various species of Ampelisca have 

 been dealt with by myself in another paper. 1 Stebbing says Ampelisca pusilla closely 

 approaches A . rubella A. Costa which has been described from the Mediterranean, 

 and Sars says it is nearly allied to A. amblyops which again somewhat resembles 

 A . anomala but differs in the absolute want of any corneal lenses. A . anomala has 

 been recorded from South Africa by Stebbing (1910A, p. 450). 



Dr. Annandale has sent me specimens from the River Ganges, Buxar, 600 miles 

 up the river, which seem to be the same as the Chilka Lake specimens; in some 

 the first antenna is shorter in comparison with the second antenna ; the eyes are dis- 

 tinctly red, in some the whole eye is red, in others patchy. 



[Taken commonly in the main area on or just above a muddy bottom in 4 to 8 

 feet of water some distance from shore. N.A.] 



Amphilochus brunneus Delia Valle. 



Amphilochus brunneus Delia Valle, 1893, p. 596, pi. 4, figs. 5; pi. 29, figs. 1-15. 



Amphilochus brunneus Stebbing, 1906, p. 151. 



Amphilochus brunneus Chevreux, 1911, p. 192. 



Amphilochus neapolitanus Walker (part), 1901, p. 301. 



Amphilochus neapolitanus Walker, 1904, p. 255. 



Amphilochus melanops Walker, 1895, p. 298, pi. 18, fig. 12 and pi. 19, figs. 13-15. 



Localities : — 



2-8 miles N.E. \ E. of Kalidai. Several. 



1 mile E. by N. of Patsahanipur. One. 



2-6 miles E. by S. \ E. of Patsahanipur. Several. 



Near Samal Island. Several, from Medusa. 



Barkul. Several, from large Medusa. 



I have no hesitation in referring these specimens to the species named above. 

 They agree closely with the description and figures given by Delia Valle and Walker. 

 Walker has united both A . melanops and A . brunneus with A . neapolitanus Delia Valle, 

 but in that species as described by Delia Valle the process of the fifth joint of the 



1 The identity of the two Amphipods, Ampelisca eschrichtii Kröyer and A. macrocephala Liljeborg. 

 Jour. Zool. Research, Vol. II, p. 75. 



