220 G. M. Giles — Notes on the Ampbipoda of Indian Waters. [No. 3, 



VII. — Natural History Notes from H. MJ's Indian Marine Survey Steamer 

 * Investigator,' Commander Alfred Carpenter, R. N., D. S. O., 

 Commanding. No. 9. Further Notes on the Amphipoda of Indian 

 Waters. — By G. M. Giles, M. B., F. R. C. S., Surgeon-Naturalist to 

 the Marine Survey. 



[Received May 5th, 1887 ;— Read February 1st, 1888.] 

 (With Plates VI.— XII.) 



How little the Amphipoda of the Baj of Bengali have been hitherto 

 worked may be judged from the fact that every species I have as yet 

 examined appears to be new to science. Indeed, with the single excep- 

 tion of a fresh-'Water species, Gammarus fiuviatilis, which I met with 

 in a mountain lake (the Pandar) at an elevation of 11,000 feet in the 

 Hindu- Kush range, and of the doubtful case of Amphithoe indica, M.- 

 Edw., described in the present paper, I have yet to find a described 

 Indian form. 



The group having been thus hitherto neglected in India, it appears 

 a good plan to set about the description of the species as they come to 

 hand, more especially as, on account of their minuteness and fragility, 

 they are best examined in the living state, a work which can only be 

 carried out on boardship. 



On this account the species are described provisionally in the order 

 in which they come to hand, the work of arranging them systematically 

 being left to some future time when sufficient material shall have been 

 collected. I will now proceed to describe the species met with since my 

 last contribution to this Journal. 



1. Anontx amaurus, n. sp., PI. VI., Fig. 1. 

 This form is interesting on account of its having, as far as I can 

 make out, no traces whatever of eyes. It was trawled at a depth of 

 1300 fathoms off the Coast of Burmah in Lat. 16° W 45" N., Long. 95° 34' 

 30" E. ; bottom temperature 36°. Although this station is over 40 miles 

 from the nearest shore, the bottom appears to consist largely of water- 

 loo-ged drift wood, and other shore material, amongst which was a number 

 of the fruits of a plant which, Dr. King of the Royal Botanical Garden, 

 Calcutta, informs me, are probably those of Baringtonia racemosa. The 

 abundant albuminous material of the seed is still comparatively fresh 

 and sound. On breaking open one of these, I found two specimens 

 of our species ; and another seed yielded a third specimen. All three 

 are females and the egg-pouches of two contained ova. The animal is, 

 for an amphipod, remarkably broad in proportion to its depth, the 

 pleura being narrow, while the coxal plates are of considerable depth. 



