Car etiological Fauna of India. 273 



to a rounded point. The regions are elevated, and the median are 

 separated from the branchial by deep furrows : all the regions are 

 closely covered by rasp-like tubercles. 



The lateral borders are tubercular, and end posteriorly in a large 

 spine directed outwards and somewhat backwards. 



Internal to this large spine is a much smaller spine ; and the pos- 

 terior border is tuberculate. 



The chelipeds are a little more than twice the length of the cara- 

 pace, with the inner and outer borders serrated, and the upper surface 

 covered with tubercles like those on the carapace : amid the serrations 

 five large teeth on the outer border of the hand are very conspicuous. 



The ambulatory legs are slender and smooth. 



The epistome is sculptured, and is very deeply excavated in the 

 middle line. 



The pterygostomian region is traversed by a canal running 

 parallel with the buccal frame : the canal is perfectly smooth, and is 

 closed below, and thus converted into a tube, by thick fringes of long 

 hairs. 



I believe, with Ortmann, that this species is very probably identi- 

 cal with L.pisoides, Adams and White (' Samarang ' Crustacea, p. 28, pi. 

 v. fig. 4), and perhaps with L. diacantlms de Haan (Faun. Japon. Crust., 

 p. 92, pi. xxiii. fig. 1). 



It is a fairly common species at the Andamans and Nicobars. 



Lambrus (Atilacolambrus) hoplonotus, Ad. & Wh. 



Lambrus hoplonotus, Adams and White, ' Samarang ' Crust., p. 35, pi. vii. fi°\ 3. 



Lambrus hoplonotus, A. Milne-Edwards, Nouv. Archiv. du Mus., VIII. 1872 

 p. 258. 



Lambrus hoplonotus, Miers, Ann. Mag. Nat. Hist., 1879, Vol. IV. p. 22 ; and 

 1 Challenger ' Brachyura, p. 98. 



Lambrus hoplonotus, Haswell, P. L. S., N. S. Wales, Vol. IV. 1879, p. 450; and 

 Cat. Austral. Crust., p. 33. 



Carapace with the outline in front of the huge lateral epibranchial 

 spine almost semi-circular, the rostrum being extremely short and not 

 breaking through the general outline. The carapace is granular, and 

 has the regions well-defined but not elevated. 



The symmetrically rounded antero-lateral margin is regularly 

 festooned with little I'ound teeth of uniform size, and ends at a great 

 projecting lateral epibranchial spine : behind and internal to this spine 

 is another small spine : the posterior border is finely granular. The 

 chelipeds, legs, and margins of the carapace are fringed with long 

 hairs ; and the pterygostomian region is channelled just as in L. sculptus. 

 The chelipeds in the male are a little more, and in the female a 

 119 



