132 A. Alcock — Carcinological Fauna of India. [No. 1, 



Etisus macrodactylus, Lucas in Jacquinot's Voy. Astrolabe, Crust, p. 30, pi. ix. 

 fig. 2, (A. M. E.) 



Etisus convexus, Stimpson, Proc. Ac. Nat. Sci. Phila. 1858, p. 31. 



Etisus maculatus, Heller, Abh. zool.-bot. Ges. Wien XI. 1861, p. 9; and SB. Ak. 

 Wien, XLIII. 1861, p. 332 : de Man, Notes Leyden Mus. II. 1880, p. 173. 



Gastric region well denned on all sides, its anterior part distinctly 

 lobulated ; branchio- hepatic regions with three lobules following the 

 curve of the antero-lateral margins. 



Antero-lateral border with 4 broad teeth (exclusive of the external 

 orbital angle), the last two of which culminate in procurved points. 



The front is cleft in the middle line by a groove ; its free edge is 

 bow-shaped. The orbital margin has, in its outer half, three lobular 

 constrictions defined by three grooves. 



The tooth at the inner angle of the lower edge of the orbit is blunt, 

 and it comes into contact with the eave of the orbit beyond the tip of 

 the process of the basal joint of the antenna. 



Cbelipeds in the adult male about twice and a half, in the adult 

 female a little less than twice the length of the carapace ; the wrist has 

 a blunt spine at the inner angle, otherwise they are smooth and un- 

 sculptured. 



Legs with both edges of all the long joints hairy, most so on the 

 lower edge of the dactylus and on the upper edge of the other joints : 

 the upper edge of the propodite and dactylus is also sharply granular, 

 but there are no spines. 



Colours in spirit variable : dull yellow, or dull greenish -brown, or 

 sea-green, often with cinnamon coloured patches or small spots. 



In the Indian Museum are 20 specimens, from Persian Gulf, 

 Karachi, Bombay, Laccadives, Andamans, and Singapore, (besides- 

 specimens from Celebes and Mauritius). 



Etisodes, Dana. 



Etisodes, Dana, Silliman's Amer. Journ. Sci. and Arts, (2) XII. 1851, p. 126 

 (footnote) ; Proc. Ac. Nat. Sci. Phila. 1852, p. 77; and U. S. Expl. Exp. Crust, pt. I. 

 p. 184. 



Etisodes, A. Milne Edwards, Ann. Sci. Nat., Zool., (4) XX. 1861, p. 291 ; and 

 Nouv. Archiv. du Mus. IX. 1873, p. 235. 



The genus Etisodes resembles Etisus in the characteristic form and 

 lie of the basal joint of the antenna?, and in the characteristic relation 

 of the front to the orbits ; but it differs in the following particulars : 



The carapace is much longer and narrower; it is less convex, especially 

 in its posterior third ; its regions are clearly defined, and are definitely 

 sculptured into lobules in the anterior two-thirds of the carapace : the 



