1888.] G. M. Giles— iVo^es on the Amphipoda of India7i Waters. 247 



The antenna is much larger than the antennule, its peduncle alone 

 equalling in length the entire organ, while, with its long flagellum, 

 it slightly exceeds the animal in length. The peduncle appears to be 

 3-jointed from the blending of its first three pieces into one, on which 

 the orifice of the green-gland forms a small tubercle about half along 

 its length. The flagellum is very long, slender, and smooth. 



The gnathites are small and feebly armed, the mandible, which 

 is provided with a long 3-jointed appendage, armed with a number of 

 long stiff setae, being provided with a small cutting, and two very small 

 triturating, lamellee, and the maxillae and maxillipeds exceptionally 

 small and feeble. 



The second and third thoracic appendages are small and slender, 

 imperfectly subchelate and extremely hirsute. The 4th and 5th, also 

 very hirsute, are otherwise of the usual ambulatory type, but are even 

 shorter than the gnathopoda. The 6th has a very peculiar form. Its 

 basipodite, short and stout, is expanded below to articulate with the 

 much expanded ischiopodite, half way down which is a row of formi- 

 dable spines ; both it and the meropodite are provided with peculiar 

 lamelliform processes on their posterior borders, from the posterior 

 border of which, and from the inferior border of the process of the 

 latter, spring a number of very long bipennate compound hairs. The 

 inferior border of the propodite is similarly provided, but to a less 

 extent. The lower borders of all the articuli are armed with a row of short 

 stout spines. The 7th is the largest of all the appendages, and, though, 

 in general form, it resembles the ordinary ambulatory appendage, it 

 too is decorated, along the posterior border of the basipodite and mero- 

 podite, with long compound hairs of the same character as those on 

 the sixth thoracic appendage. The 8th, somewhat smaller than the 

 7th, resembles this latter in general form, but is more feebly armed. 



The three anterior abdominal appendages are large and powerful, 

 and their paddles are armed with compound, plumose hairs, like those 

 of the posterior thoracic appendages, in place of the usual simple cirrhi. 

 The fourth is large and smooth with its rami unequal, the inner being 

 somewhat the smaller. The fifth resembles the fourth, but is consider- 

 ably smaller. The sixth is the largest of all, and, like the anterior 

 appendages, is armed with long plumose compound hairs. Its protopo- 

 dite, though short, is very stout, and its large rami are nearly equal, the 

 outer only slightly exceeding the inner in length. The telson is squami- 

 form and completely double. 



In the female there is a large egg-pouch, which appears to be sup- 

 plemented by the long fringe of feathery hairs from the posterior thoracic 

 appendages, for in several cases I noticed very advanced ova entangled. 



