1898.] A. Alcock — Carcinological Fauna of India. 215 



Reisen Osfc-Afr. III. i. p. 75, and MB. Ak. Berl. 1878, p. 797 : Miers, P. Z. S. 1877, 

 p. 135, and Ann. Mag. Nat. Hist. (5) V. 1880, p. 237, and Zool. H. M. S. Alert, 

 pp. 517, 534, and Challenger Brachyura, p. 162 : Tozzetti, Magenta Croat, p. 60, 

 pi. v. figs, la-c : E. Nauck, Zeits. Wiss. Zool. XXXIV. 1880, p. 58 (gastric teeth) : 

 Richters in Mobius Meeresf. Maurit. p. 151 : Haswell, Cat. Austral. Crust, p. 75 : 

 Mnller, Verh. Ges. Basel VIII. 1886, p. 475 : de Man, Journ. Linn. Soc, Zool., XXII. 

 1887-88, p. 68. and Archiv. f. Natnrges. LIII. 1887, i. 327, and Zool. Jahrb. Syst. &c. 

 VIII. 1894-95, p. 555 : Henderson, Trans. Linn. Soc, Zool., (2) V. 1893, p. 367 : 

 Ortman, Zool. Jahrb., Syst., VII. 1893-94, p. 480, and in Semon's Forschungsr. 

 (Jena. Denk. VIII) Crust, p. 54 : Zehntner, Rev. Suisse Zool. II. 1894, p. 161 : 

 Whitelegge, Mem. Austral. Mus. III. 1897, p. 137. 



Eriphia trapeziformis, Hess, Archiv. fiir Naturges. XXXI. 1865, i. pp. 135, 171, 

 pi. vi. fig. 4 (see de Man, Zool. Jahrb., Syst., II. 1887, p. 695). 



Carapace Dearly f as long as broad : gastric region large, well 

 demarcated and subdivided into three large subregions, its anterior 

 part, like the anterior part of the branchio-hepatic regions, covered 

 with small pearly and subsquamiform tubercles ; the rest of the carapace 

 smooth, but closely covered with very small vesiculous granules not 

 plainly visible to the naked eye : the post-orbital groove is distinct, 

 and behind it, parallel with the gastric region, on each side a small 

 narrow areola is marked off. 



The free edge of the frontal lobes is bluntly spinate : there is a 

 blunt spine also at the lower inner angle of the orbit, and two or three 

 at the outer angle of the orbit : and there are 5 or 6 blunt spines or 

 spinules of decreasing size along the antero-lateral border. 



Chelipeds almost smooth to the naked eye, though closely covered 

 with small depressed vesiculous granules under the lens : upper border 

 of arm denticulate at its distal end, where also the granules on the 

 neighbouring part of the outer surface are plainly visible without a 

 lens ; the anterior border of the arm denticulate at its proximal end. 

 The upper part of the inner surface of the wrist forms a distinct facet, 

 the proximal angle of which is pronounced and the distal end of which 

 is bounded by two or three blunt spines. 



Legs stout, smooth ; upper edge of merus denticulate and some- 

 what hairy, the lower edge with tufts of stiff hair: similar tufts of hair 

 along upper edge of carpus and on all the edges and surfaces of the 

 propodite ; the greater part of the dactylus covered with short stiff 

 hairs and longer bristles. 



Colours in spirit dull maroon, with a bluish-green tinge on the 

 postero-lateral parts of the carapace and on the walking-legs. 



In the Indian Museum are 53 specimens, from the Andamans, 

 Arakan coast, Mergui, Ceylon and Laccadives (besides 2 from 

 Samoa). 



