1888.] G. M. Giles — Notes on the Ampliipoda of Indian Waters. 249 



being ill- developed and the dactjlopodifce smooth and unarmed. The 

 carpopodite, however, is prolonged into a stjliform process opposible to 

 the propodite. Third thoracic appendage closely resembles the second, 

 but has the propodite rather shorter and broader. In both these ap- 

 pendages the inferior border of the propodite is armed with a number of 

 peculiar uncinate hairs. The fourth, fifth, sixth, and seventh thoracic 

 appendages are about the same length as the gnathopoda, the fifth and 

 sixth being slightly the longer, the seventh shorter than the rest, all 

 closely resemble each other and are so thickly covered with hairs that 

 their dactylopodites can only with difficulty be made out among the 

 dense brush springing from the end of the propodite. The eighth 

 differs much from all the preceding thoracic appendages, being very 

 nearly as long as the entire body of the animal. Its three proximal 

 joints are stout and armed with short, sharp spines, while the remaining 

 articulations are filiform and clothed with long thin hairs. 



The first three abdominal appendages are of the usual type, but are 

 very large, the protopodites being exceptionally long and the rami broad 

 and well armed. The last three pairs are all biramous and styliform. 



Elsia, gen. nov. 



For the following species I can find no genus into which it will at 

 all well fit. The family Flatyscelidoe, to which it undoubtedly belongs, 

 has been divided by Professor Glaus (Arb. Zool. Inst. Wien. 2, 1879) 

 into two groups, into the second of which — characterized by the body 

 being more or less compressed and extended, by the abdomen being long 

 and not easily flexible on to the ventral aspect of the thorax, and by long 

 and narrow coxal plates, — our species falls without any difficulty. Glaus 

 divides this group into three subfamilies, the Pronoidoe, Lycceidce, and 

 Oxycephalidoe. Of these three, the second corresponds best to the present 

 species, and is thus characterized by Glaus. " Body generally shaped as in 

 Hyperia : abdomen can be half flexed on thorax : coxal plates of 6 and 7 

 thoracic appendages triangular ; 8th thoracic appendage feeble. In the 

 female the body is more compressed than in the male and the hinder 

 antennae usually aborted." Glaus enumerates the following genera as 

 belonging to this subfamily, Thamyris, Lyccea, Simorliynchus, Pseudolyccea, 

 Paralycasa, and Lycmopsis. The present species corresponds to none 

 of these, although it approaches most nearly to Pseudolyccea. From this, 

 however, it differs in the following points. 



a. The parts near the mouth are 7iot " produced into a sort of snout." 



/3. Eyes large, but do not cover the whole extent of head. 



y. Gnathopoda 7iot simple and claw-shaped, bat complexly sub- 

 chelate. 



