31 



groove and surmounted by two spiniform tubercles, one behind the other : the 

 gastric region is partly defined anteriorly by two creases, and the cardiac region 

 is partly defined posteriorly by two grooves, and a narrow and indistinct groove 

 separates the hepatic from the branchial region on either side : on either latei-al 

 margin are 5 spiniform tubercles, not including the dentiform prolongation of 

 the outer angle of the buccal cavern, and at either end of the short posterior 

 margin is a dentiform tubercle: 3 similar tubercles occur, one in the middle, of 

 the cardiac region and one on either side of it on the after part of the branchial 

 regions — these three, along with the last on the lateral borders and the two on 

 the posterior margin, forming a ring round the tumid intestinal region : the side- 

 wall of the carapace is grooved longitudinally just above the epimeral edge. 



The front is bidentate, its tips just projecting beyond the level of the buccal 

 cavern. 



The cheHpeds in the female (male unknown) are If times the length of the 

 carapace : the hand is inflated, cylindrical, and about f the length of the fingers : 

 the fingers are very slender, almost hairless, hooked at tip, finely denticulate with 

 a few slightly larger denticles at distant intervals, and they open in an obliquely 

 vertical plane. 



Length of carapace of female (apparently adult) 16 millim., breadth 17 

 millim. 



From the Bay of Bengal, off Coromandel coast, 112 fms. 



Family D07'ippidie. 



Ethusa, Roux. 



Ethnsa. Roux, Crnst. de la Mediterranee, pi. xviii. and text relating thereto : Milne Edwards. Hiat. Nat. 

 Crust. II. 161 : Lamarck, Hist. Nat. Anim. sans Vertebr. (2nd ed.) Vol, V. p. 417. 



Ethusina, S. I. Smith, ' Albatross' Crustacea, 1883, in Ann. Eep. U. S. Comm. Fish, Ac, 1882 (1884J. 

 Ethusa, Miers, ' Challenger ' Brachyura, pp. 328, 331 : Alcock, J. A. -S. B., Vol. LXV. pt. 2, 1896, p. 281. 



Carapace shaped much as in Doripi^e. The front consists of two laminar 

 teeth each of which again is bifid at tip : on either side of the front, and 

 separated from it by a deep cleft, is a long flat tooth or spme formed by the 

 prolongation of the antero-external angle of the carapace, and forming the outer 

 angle of the orbit. There is practically no orbital floor. The antennules fold 

 obliquely : they are large, but fold fairly well into their fosste. The antennae 

 have a long flagellum : their basal joint is inserted between the eyestalk and the 

 basal antennulary joint, but on a sHghtly lower level. 



The buccal cavern is elongate-triangular and does not usually extend to the 

 front : the external maxilHpeds cover only its basal three-fourths, or thereabout, 

 somewhat as in Borip'pe, but the distal part is closed in by stout foliaceous pro- 

 cesses of the first maxillipeds. The flagellum or palp of the external maxillipeds 



