462 



Records of the Indian Museum. 



[Vol. XXIV, 



Remarks. — This species is very closely allied to G indicus and 

 the only real difference indicated by 

 Hansen lies in the structure of the third 

 pleopod of the male. I figure herewith 

 one of these pleopods to indicate its form 

 in these specimens and to complete Han- 

 sen's description, since the distal part of 

 the exopod was missing in his specimens. 

 The exopod is three-jointed, the second 

 joint slightly longer than the first and 

 one and a half times as long as the third. 

 The basal joint bears on the outside a 

 sharply pointed triangular process and 

 on the inside two spines (Hansen figures 

 three). The third joint narrows sudden- 

 ly at about two-thirds of its length and 

 terminates in three setae, one long with 

 a few subsidiary hairs, a second some- 

 what shorter and smooth and a third 

 slender lash-like seta twisted as shown 

 in the figure. All the specimens showed 

 this peculiar feature. 



Distribution. — Gilbert Islands (Hansen). 



Text-fig. 8. — Gastrosaccus 

 pacificus, Hansen. 



a, third pleopod of the 

 male, X 33; b, joint of the 

 same, X 100. 



Gastrosaccus bengalensis Hansen. 



Gastrosaccus bengalensis,- Hansen, 1910, p. 58. 



Zimmer, 1915(3). P^ 164. 

 1, 11 Zimmer, 1918, p. 15. 



Locality. — Port Blair, Andaman Islands. 



St. 8. Two males. 

 St. 32. One male. 



Distribution. — Bay of Bengal (Hansen) ; voyage from Ceylon 

 to New Guinea, and off Formosa (Zimmer). 



Subfamily MYSINAE. 



Tribe Erythropini. 



Genus Erythrops G. O. Sars. 



Erythrops minuta Hansen. 



Text-figs. 9a, b. 



Erythrops minuta, Hansen, 1910, p. 63. 



Locality. — Kilakarai, Gulf of Manaar, from weeds, 0-2 

 fathoms, February, 1913. Five males, 3 mm. 



