Garcinological Fauna of Indin. 379 



do Mau, Arcliiv f. Naturgea. LIII. 1887, i. p. 354, pi. xv. fig. 4 : Ortmann, Zool. 

 Jahrb., Syst., VII. 1893-94, p. 745 and X. 1897-98, pp. 342, 344. 



Macrophthalmus inenni:^, A. Milne Edwards, Ann. Soc. Ent. France, (4) YIL. 

 1867, p. 286, and Nouv. Archiv. du Mas. IX. 1873, p. 277, pi. xii. fig. 5 (apud de Man). 



Carapace smooth, becoming finely granular near the latei-al margins, 

 its length in the male is half, in the female decidedly more than half, 

 its greatest breadth : on either branchial region, behind the branchial 

 groove, are two gi^anular eminences, one behind the other : 3 teeth 

 arranged as in M. pectinipes at the anteiior end of the posterioi-ly- 

 eonvei'gent lateral borders, the first (outer orbital angle) being the most 

 prominent and much the largest, the third minute. 



Front, in its narrowest part between the eyestalks, about one- 

 eleventh the greatest breadth of the caiapace, its free edge obscurely 

 bilobed. Orbits considerably oblique, the upper border microscopically 

 beaded, the lower border finely and elegantly serrate. The ejestalks are 

 slender and curved, and the eyes reach to the end of the orbital trench. 



The suture between the ischium and merus of the external maxilli- 

 peds is decidedly oblique, and there is a distinct gap between these 

 appendages even when their flagellum is folded. 



The chelipeds have the same general proportions as in M. pectinipes : 

 all the borders of the arm are granular or denticulate, but there is no 

 "musical ridge " on the inner border : a bunch of spinules at the inner 

 angle of the wrist: both borders of the palm, but particularly the lower 

 border, are finely granular, and a fine raised gianular line runs along 

 the outer surface of the palm parallel wiih the lower border: the inner 

 surface of the palm, like that of the fingers, is haiiy, but quite smooth 

 and unarmed beneath the hair : there is a small molariform tooth at the 

 base of the dactylus, and a larger one having a forward slant on the 

 immobile finger. 



The legs have the same general pi'oportions as in 21. pectinipes, but 

 they are quite smooth and unarmed, except for a small subterminal 

 spine on the anterior border of the raeropodites of the 2nd and 3td pair. 



In the Indian Museum are 5 specimens from the Andamans. The 

 cai*apace of the largest specimen is lOo millim. long and 21 5 millim. 

 broad. 



72. Macrophthalmtis sulcatum, Edw. 



Macrophthahnus sulcutun, Milne Edwards, Ann. Sci. Nat. Zool. (3) XVIIl. 1852 

 p. 156: Ortmann, Zool. Jalirb. Syst. X. 1807-98, pp. 3U, 345 (?iec fynon.). 



Carapace free of granules iii the fciiusllc, studded with miimte 

 granules in the male, its leiigtli in the male only about tin-ee-eio-hths in 

 the female nearly Imlf, its greatest breadth. On the branchial region 



721 



