1900.] A. Alcock — Garcinological Fauna of India. 413 



on the lateral border, the posterior one being very- 

 small : — 



i. Third pair of legs not three times the length 



of the carapace 8. longipes. 



ii. Third pair of legs more than three-and-a-half 



times the length of the carapace 8. Jcraussi. 



97. Sesarma quadratum (Fabr.). 



Cancer quadratus, Fabricius, Ent. Syst. Suppl. p. 341. 



Ocypoda quadrata, JBosc, Hisb. Nat. Crnst. I. p. 198. 



Ocypoda plicata, Latreille, Hist. Nat. Crust. &c. VI. p. 47. 



Sesarma quadrata, Milne Edwards, Hist. Nat. Crnst. II. 75, and Ann. Sci. Nat., 

 Zool., (3) XX. 1853, p. 183. 



Sesarma quadratum, A. Milne Edwards, Nouv. Archiv. du Mas. IX. 1873, p. 302 : 

 Miers, Phil. Trans. Vol. 168, 1879, p. 490. 



Sesarma quadrata, Richters, in Mobins' Meeresf. Maurit. p. 157 : Kingsley 

 Proc. Ac. Nat. Sci. Philad. 1880, p. 217 : Lenz and Richters, Abh. Senck. Nat. Ges. XII. 

 188, p. 425 : de Man, Zool. Jahrb. Syst. II. 1887, p. 655, pi. xvii. fig. 2 and p. 683, 

 and IV. 1889, p. 434, and IX. 1895-97, pp. 181, 182, and Notes Leyden Mus. XII. 

 1890, p. 99, and in Weber's Zool. Ergebn. Niederl. Ost-Ind. II. p. 328 : Thallwitz 

 Abh. Mus. Dresden, 1890-91, No. 3, p. 37: Henderson, Trans. Linn. Soc. Zool. (2) 

 V. 1893, p. 392: Ortmann, Zool. Jahrb. Syst. VII. 1893-94, p. 724. 



Grapsus (P 'achy soma) affinis, De Haan, Faun. Jap. p. 66, pi. xviii. fio- 5. 



Sesarma affinis, Krauss, Sudafr. Crust, p. 45 : Milne Edwards, Ann. Sci. Nat 

 Zool. (3) XX., 1853, p. 183 : Heller, Novara Crust, p. 62 : de Man, Notes Leyden 

 Mus. II. 1880, p. 22 : Miers, Ann. Nag. Nat. Hist. (5; V. 1880, p. 312 : Kingsley, I c. 

 supra, p. 213 : Ortmann, I.e. supra, p. 724. 



Sesarma ungulata : Milne Edwards, Ann. Sci. Nat., Zool. (3) XX. 1853, p. 184 : 

 Kingsley, I.e. supra, p. 218. 



Sesarma aspera, Heller, Novara Crust, p. 63, pi. vi. fig. 1 : Kingsley, I.e. supra 

 p. 214 : Muller, Verh. Nat. Ges. Basel, 1886, p. 476: de Man, Zool. Jahrb. II. 1887 

 p. 656 and Journ. Linn. Soc. Zool. XXII. 1887-88, p. 169. 



Sesarma melissa, de Man, Zool. Jahrb. Syst., II. 1887, p. 656, and Journ. Linn. 

 Soc, Zool., XXII. 1888, p. 170, pi. xii. figs. 5-7, and Zool. Jahrb. Syst., IV. 1889 

 p. 434. 



Carapace hardly convex, decidedly broader than long, its length 

 being about four-fifths its breadth between the an tero- lateral angles, 

 deep ; the 4 post-frontal lobes prominent equal and a little rugose trans- 

 versely, the rugae being sparsely tufted with hair ; the cardiac and intes- 

 tinal regions very much less distinct than the gastric : some oblique 

 striations on the epibranchial regions. 



Front decidedly more than half the greatest breadth of the 

 carapace, not very deep, its free margin usually but slightly sinuous. 

 Lateral borders of carapace nearly parallel, a little divergent ante- 

 riorly, without any tooth behind the acute orbital angle. 



The chelipeds differ in the sexes, being about If times the length 



