168 A. Alcock — Carcinologieal Fauna of India. [No. 2, 



Sub-family IN ACHING (see Table I.). 



Alliance I. Leptopodioida (see Table I.). 

 Lambrach^us, n. gen. 

 Closely allied to Leptopodia and MetoporapMs, from which it differs 

 (1) in its extremely long sub-cylindrical neck, (2) in its minute antennae 

 and (3) in the Lambrus-\ike proportions of its chelipeds. 



Eyes antennules and antennae borne at the end of a long narrow 

 subcylindrical " neck," which is continued onwards as an extremely 

 long slender spiny rostrum. 



Eyes stoutish, salient and non-retracticle : no defined orbits : a 

 small postocular spine. Antennae minute, exposed to dorsal view. 

 Chelipeds stout and extremely long, with long sub-cylindrical palms 

 and short fingers. 



Legs very slender : shorter than the chelipeds. 



Lambrachseus ramifer, n. sp., Plate III. fig. 1. 



The body is formed by (1) a small trunk, (2) a long narrow almost 

 cylindrical prestomial "neck," and (3) a long slender sinuous spiny 

 rostrum shaped like a withered branch. 



The carapace proper is trilobed, the lateral lobes being formed by 

 the branchial regions, and the front lobe being formed by the wings of 

 the buccal frame. 



The " neck," at the end of which are borne the eyes, antennules, 

 and antennae, is rather longer than the carapace proper. 



The rostrum is nearly twice the combined length of the neck and 

 carapace. 



The eyes are salient and non-retractile, and though there is a 

 narrow dorsal eave round the base of the eyestalks and a pair of tiny 

 postocular spines, there is nothing like an orbit present. The cornea 

 is surmounted by a little tooth. 



The antennae are minute and filiform, and are completely exposed : 

 their total length is not one-sixth that of the rosti'um. 



The antennules are of large proportions : they fold longitudinally, 

 but when folded are much beyond the capacity of the narrow shallow 

 antennulary fossae. 



The external maxillipeds have broad endopodites, and completely 

 cover the buccal frame : the merus is expanded in both directions, but 

 most at its internal angle, so that the flagellum is inserted nearer to the 

 external angle. 



