TATTERSALL— MYSIDACEA AND EUPHAUSIACEA 125 



Subfamily, Gastrosaccinae, Norman. 

 Genus Gastrosaccus, Norman. 



9. Gastrosaccus indicus, Hansen. 



G. indicus, Hansen, 1910. 



Stations, u, Farquhar Island, surface, one male, 7 mm. ; v, Farquhar Island, surface, 

 two females, 7 mm. ; y, Providence Island, surface, one male, 7 mm. 



Hitherto, only known from Hansen's records from the Netherland East Indies, where 

 the types were captured by the Siboga expedition. 



10. Gastrosaccus parvus, Hansen. 



G. parvus, Hansen, 1910. 



Stations, u, Farquhar Island, surface, one male, 6 mm. ; x. Providence Island, surface, 

 one male, 7 mm. 



This species, also described in the first place fi^om the Siboga collections, has a 

 distribution coinciding with that of the last. 



Subfamily Leptomysinse, Norman. 

 Genus EucH^TOMERA, G. O. Sars. 



11. EuchcBtomera typica, G. 0. Sars. 



E. typica, G. O. Sars, 1885. 

 E. limbata, Illig, 1906. 



Stations, bb, near Providence Island, — 140 fins., one female, 9 mm.; kk, Amirante 

 Islands, 100 fms., one female, 9 mm. 



I have already expressed the opinion (Tattersall, 1909), that E. limbata, Illig, would 

 prove to be a synonym of E. typica, Sars, and, after an examination of actual specimens 

 and a comparison of them with the type species, I am fully confirmed in my opmion. 

 E. limbata is stated to difter from E. typica in the presence of a finger-like process on 

 the eyes and in having an armature of small teeth on the anterior margin of the carapace. 

 Both these supposed differences disappear on an examination of Sars' types, for the latter 

 possess finger-like processes on tlie eyes and the armature of small teeth on the carapace. 

 I would further note that both Sars' types and those in the present collection have the 

 lateral posterior margins of the first four segments of the pleon and the entire posterior 

 margin of the fifth and sixth segments of the pleon coarsely serrate. 



The present specimens, though apparently sexually mature, are smaller than both Sars' 

 and lUig's types. 



E. typica has not before been recorded from the Indian Ocean. 



12. EuchcBtomera oculata, Hansen. 



E. oculata, Hansen, 1910. 

 Stations, p, near Farquhar Island, 600 fms., one female, 8 mm.; kk, Amuante 

 Islands, 150 fms., one female, 8 mm. 



