5oo 



Records of the Indian Museum. 



[Vol. XXIV, 



plus the terminal spines, inner lower margin armed with about 

 eleven stout spines from the statocyst to just short of the apex, the 

 spines increasing in size distally. 



Outer uropod about half as long again as the telson. 



Remarks. — This species belongs to that group of species 

 characterised by the presence of a distinct process on the eye. 



Text-fig. 27. — Heteromysis zeylanica, sp nov. 



a, eye, X 50 ; b, antennal scale, X 65 ; c, endopod of third thoracic limb, 

 X 65 ; d, endopod of fourth thoracic limb, X 65 ; e, telson, X 65. 



H. odontops Walker is the type of this group. It is distinguished 

 from H. harpax by this character, by the telson having spines on 

 the proximal wide part of its margins, by the details of the 

 armature of the cleft and by the row of stout spines on the inner 

 margin of the inner uropod, as well as by the less robust form of 

 the third thoracic limb. 



Heteromysis gymnura, sp. nov. 

 Text-figs. 28a-e. 



Locality. — Kilakarai, Gulf of Manaar, among weeds, 1-2 

 fathoms. Five males and two females, 4-6 mm. (Types.) 



Description. — Eye large, at least as wide as long in dorsal 

 view, no finger-like process, cornea occupying more than half the 

 eye in dorsal view and wider than the rest of the eye. 



Antennal scale longer than the antennal peduncle and equal 

 in length to the antennular peduncle, three and a half times as 

 long as broad, no terminal joint. 



