1888.] G. M. Giles — Notes on the Artipliipoda of Indian Waters. 243 



" taper " distally (as described by Milne-Edwards, Nat. Hist, des Crus- 

 taces, vol. iii, p. 31), but not so markedly as to make it a prominent 

 characteristic. All three appendages shew also a peculiarity of the pro- 

 podites, which are armed at the distal end of their anterior borders with 

 a pair of stout blunt spines including* between them a rounded depres- 

 sion, and giving one the impression of their being especially suited to 

 subserve the guiding of a thread. All the thoracic appendages, except 

 the first and last, appear to carry gill plates in both sexes. 



The three anterior abdominal appendages are large and well de- 

 veloped, but are quite of the usual type. The 4th and 5th abdominal 

 appendages are stout, the peduncle of the 5th being considerably the 

 shorter. Their rami are subequal and styloid and are armed with 

 stout short spines, some of which, near the ends of the rami, shew a 

 tendency to become recurved. The peduncles also are armed with 

 a few similar spines. The last appendage is peculiar. Its peduncle is 

 very short and broad and armed only with a single spine at the end 

 of its inner border. Its rami differ greatly, the inner ramus being 

 very stout and nearly spherical and armed only with a single short 

 spine and a few hairs, while the outer is laminar and quite smooth, 

 and has its inner border developed into a peculiar double hook. 



I think it is more than probable that this species is identical with 

 A. indica, Milne-Edwards (loc. cit.), more especially as my specimens 

 agree in the most prominent peculiarity which the species possesses, 

 namely, the shortness and equality of the antennoD. Milne-Edwards' 

 species was taken on the other side of the peninsula, but, as it is 

 thoroughly pelagic, it is probably found on both sides. His description 

 is, however, so utterly inadequate that it would be impossible to pro- 

 nounce on the point without seeing the actual specimens. He does 

 not appear to have figured the species, and S. Bates' figure (Cat. Amph. 

 Crust. British Museum, pi. xlii, fig. II), which is stated to have been 

 drawn from the type in the Museum of the Jardin des Plantes, is so 

 small and indistinct that it is impossible to draw any certain conclusions 

 from it. As far as they go, figure and description incline me to believe 

 that this is the same species, but in any case a more complete figure 

 and description were a desideratum. 



7. Attlus comes, n. sp., PI. X., Figs. 8—10. 

 The main point of interest connected with the present species is its 

 close superficial resemblance to, and its companionship with, Amphithoe 

 indica. Several specimens were taken with the latter species, already 

 described ; but it was not until after repeated examinations that I was 

 able to assure myself that the differences were not of a sexual value 

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