A. Alcock — Garcinological Fauna of India. [No. o. 



Richters, in Mobius, Meeresf. Maurit. p. 156: Kingsley, Proc. Ac. Nat. Sci. Philad. 

 1880, p. 190 : Lenz & Richters, Abb. Senck. Nat. Ges. XII. 1881, p. 425 : Miiller, 

 Verh. Nat. Ges. Basel, VIII. p. 475 : Ozorio, Journ. Sci. Nat. Lisb. XI. p. 227 : 

 Henderson, Trans. Linn. Soc, Zool., (2) V, 1893, p. 390: Ortmann, Zool. Jahrb., 

 Syst., VII. 1893-94, p. 701: Whitelegge, Mem. Austral. Mas. III. 1897, p. 139: 

 Nobili, Ann. Mus. Genov. (2) XX. 1899, p. 265. 



Grapsits Gaimardi, Savigny, Descr. Egypt. Crust, pi. ii. fig. 3. 



Metopograpsus Eydouxi and intermedins, Milne Edwards, Ann. Sci. Nat., Zool., 

 (2) XX. 1853, p. 165 (sec. Kingsley, I.e.). 



Pachygrapsus sethiopicus, Hilgendorf, in v. d. Decken, Reisen Ost-Afr., Crust, p. 

 88, pi. iv. fig. 2 (Ji.de Kossmann, I.e., and Hilgendorf, I.e.). 



Carapace about four- fifths as long as broad, the sides distinctly 

 convergent posteriorly ; besides the oblique markiugs on the lateral 

 parts of the epibranclnal regions, there are some fine transverse mark- 

 ings on the post-frontal region. 



Front about three-fiftbs the greatest breadth of the carapace, its 

 free edge beaded, thin and prominent but hardly laminar, and slightly 

 sinuous. Orbits little oblique, their major diameter is a little more than 

 a third the width of the front : the inner angle of the lower border is 

 denticulate. 



Chelipeds unequal, the length of the larger one about If times that 

 of the carapace : there are wrinkles or squamiform markings on the 

 upper surface of the arm and wrist and — along with some vesiculous 

 granules — on the upper and lower borders of the hand. The inner 

 border of the ischium is denticulate, the inner border of the arm is 

 spinate and is expanded distally to form a laciniate lobe, and there is a 

 spine, which may be double, at the inner angle of the wrist : the fingers 

 have blunt tips, and the dactylus is not very much longer than the 

 upper border of the palm. 



Of the legs the 1st pair is the smallest and the 3rd pair the longest 

 — about twice the length of the carapace : in all, the upper border 

 of the merus ends in a spine and the lobe at the far end of the lower 

 border is spinate : in the last three pairs the greatest breadth of the 

 merus is half its length. 



The terminal segment of the male abdomen is simply triangular. 



In the Indian Museum are 56 specimens, from Karachi, Bombay, 

 the Orissa coast, the Ganges Delta, the Arakan coast, and the Anda- 

 mans. The carapace of the largest specimen is 23f millim. long and 

 30 millim. broad. 



87. Metopograpsus maculatus, Edw. 



Metopograpsus maculatus, Milne Edwards, Ann. Sci. Nat. Zool. (3) XX. 1853, 

 p. 165: de Man, Journ. Linn. Soc, Zool., XXII. 1887-88, p. 145, pi. r. figs. 1-3. 



