1898.] A. Alcock — Carcinological Fauna of India. 163 



Front bilobed, the outer angle in each lobe forming a distinct little 

 lobule. 



The four teeth of the antero-lateral border are sharply conical. 



Chelipeds unequal, but not greatly so, very finely granular ; arm 

 with the anterior border rather strongly serrated, and with numerous 

 pustule-like tubercles along the posterior border; upper and outer 

 surface of wrist, and upper as well as a small part of inner and a larger 

 part of outer surface of hand, covered with well-spaced pustule- 

 like tubercles, those on the outer surface of the hand being in 

 longitudinal series ; inner angle of wrist strongly pronounced, with 

 bifid tip. 



Legs with finely granular surface, sharply granular on the dorsal 

 aspect, where there are some long scattered hairs : upper edge of 

 meropodites with 1 row of spinules, upper border of carpopodites with 

 3 rows, of propodites with 2 rows. 



Colours in spirit, yellowish brown, or greenish ; fingers black. 



In the Indian Museum are 12 specimens, from the Andamans and 

 Ceylon, (as well as 19, from Mauritius and Samoa). 



87. Phymodius monticulosus (Dana), A. M. Edw. 



Chlorodius monticulosus, Dana, Proc, Ac. Nat. Sci. Phila. 1852, p. 79; and U. S. 

 Expl. Exp. Crust, pt. I. p. 206, pi. xi. figs. 9a-/: Stimpson, Proc. Ac. Nat. Sci. Phila. 

 1858, p. 34. 



Chlorodius obscurus, Lucaa in Jacquinot's Voyage Astrolabe, Zool. Vol. III. 

 Crust, p. 26, pi. iii. fig. 4. 



Phymodius monticulosus, A. Milne Edwards, Nouv. Archiv. du Mns. IV. 1868. 

 p. 71 (name only) : Richters in Mobius, Meeresf. Maurit. p. 148 : Miers, Challenger 

 Brachynra, p. 139: Muller, Verh. Ges. Basel, VIII. 1886, p. 474 : Cano, Boll. Soc. 

 Nat. Napoli, III. 1889, p. 201 : J. R. Henderson, Trans. Linn. Soc, Zool., (2) V. 

 1893, p. 363: de Man, Zool Jahrb., Syst. VIII. 1894-95, p. 524: T. Whitelegge, Mem. 

 Austral. Mns. III. 1897, p. 136. 



Phymodius obscurus, A. Milne Edwards, Nouv. Archiv. du Mus. IX. 1873, p. 220 : 

 (?) de Man, Notes Leyden Mus. II. 1880, p. 174 : Richters in Mobius, Meeresf. 

 Maurit. p. 148. 



Closely resembles P. ungulatus, but is at once distinguished by the 

 more convex arch of the front and antero-lateral borders, by the greater 

 dorsal convexity of the carapace, by the " worn " look of the sculpture 

 of the carapace, and by the much less rough hands. 



Carapace thick, and distinctly convex in its anterior two-thirds ; 

 the regions and subregions are all distinct and convex, but the depres- 

 sions that separate them are broad and not sharp cut, and this gives the 

 sculpture a worn or moulded appearance. 



Front bilobed, the outer angle of each lobe well defined. 



