266 A. Alcock — Carcinological Fauna of India. [No. 2, 



Larnbrus (Wiinolambrus) contrarius, Herbst. 



Cancer contrarius, Herbst, Krabben, III. iv. 18, tab. lx. fig. 3. 



\Parthenope spinimana, Lamk., Hist. Anim. Sans. Vert., V. 239.] 



Larnbrus spinimanus, Desmarest, Consid. Crust., p. 86, pi. iii. fig. 1. 



Larnbrus contrarius, Milne-Edwards, Hist. Nat. Crust., I. 354. 



Larnbrus contrarius, Bleeker, Recherches Crust, de 1' Ind. Archip., p. 18. 



Larnbrus contrarius, A. Milne-Edwards, Maillard's 1' ile Reunion, Annexe P, p. 10. 



Larnbrus contrarius, Brocchi, Ann, Sei. Nat., (6) II. 1875, Art. 2, p. 98, pi. xviii. 

 figs. 166, 167 (J appendages). 



Larnbrus contrarius, Richters, in Mobius, Meeresf. Maurit., p. 145. 



Larnbrus contrarius, Miers, Ann. Mag. Nat. Hist., 1880, Vol. V. p. 230 ; and 

 1 Challenger' Brachyuraf p. 94. 



Larnbrus contrarius, J. R. Henderson, Trans. Linn. Soc, Zool., (2) V. 1893, 

 p. 350. 



Carapace, with rostrum, slightly longer than broad, everywhere 

 covered with jagged granules and spines : the regions are strongly 

 convex, and, usually, in the middle line, are three or four, and again 

 on either branchial region, one or two spines of predominant size. 

 The rostrum is broad, prominent, declivous, and spiny or granular, 

 both on the upper surface and along the margins. The hepatic regions 

 are very prominent, and their angle is strongly produced. The orbital 

 edge is prominent and the post-orbital constriction strongly pronounced. 



The chelipeds are about three times the length of the carapace 

 and rostrum, and are extremely massive, the hands especially : above 

 they are covered with large sharp jagged spines with rough tubercles 

 interpersed ; below they are everywhere covered with rasp-like granules, 

 The ambulatory legs are rather stout for a Larnbrus, and have the 

 merus somewhat spiny along one or both edges. 



Colours in spirit, mottled pink, tips of fingers purple-black, ambu- 

 latory legs banded alternately yellow and bluish pink. 



Our largest specimens, a male and a female, are from off Colombo, 

 26f fathoms, and have a span (of chelipeds) of 290 millim. and 265 

 millirn. respectively. 



Larnbrus (Rhinolambrus) longispinis, Miers, 



Larnbrus longispinus, Miers, Ann. Mag. Nat. Hist., 1879, Vol. IV. p. 18; Zoo- 

 logy H. M. S. 'Alert,' pp. 182 and 199; and ' Challenger ' Brachyura, p. 93. 



Larnbrus longispinus, de Man, Archiv. fur Naturgesch., LIU. 1887, p. 229. 



Larnbrus longispinus, Walker, Journ. Linn. Soc, Zool., Vol. XX. 1890, p. 109. 



Larnbrus longispinus, Henderson, Trans. Linn. Soc, Zool., (2) V. 1893, p. 350. 



Larnbrus spinifcr, Haswell, P. L. S., N. S. Wales, Vol. IV. 1879, p. 451, 

 pi. xxvii. fig 1 ; and Cat. Aust. Crust., p. 34. 



Carapace, with rostrum, little longer than broad, its surface covered 

 with spiny tubercles : There are four prominent spines in the middle 



