22 Mr. E. J. Miers on new or little-known 



unarmed ; but there are two larger tubercles or small spines on 

 the postero-lateral margins. The rostrum is vertically de- 

 flexed, triangular, and granulated above. The basal antennal 

 joint is very small ; the epistoma is large ; the subhepatic and 

 pterygostomian regions are not channelled. The anterior 

 legs have the arm rounded and tuberculate above, with 

 small spines on its anterior margin; the wrist is tuberculate ; 

 the hand with a few tubercles on its upper surface, the ante- 

 rior margin armed with about ten, and the posterior with four 

 granulated spines. The under surface of arm, wrist, and hand 

 is closely granulated. The ambulatory legs are smooth, and 

 are not compressed and cristate as usual in the genus. 

 Length to base of rostrum, and breadth, nearly \ inch. 



Hob. Ceylon {E. W. H. Holdsioorth, Esq.) . 



The vertically deflexed rostrum and carapace, devoid of 

 spines on its surface and anterior margins, and non-com- 

 pressed ambulatory legs are characteristic of this species. It 

 seems to be allied to L. gracilis, Dana, a species from the 

 Fijis, in the form of the carapace and legs ; but in that species 

 the carapace has a spine on the cardiac and each branchial 

 region, and elsewhere appears to be smooth. 



Lambrus hoplonotus. 



Lambrus hoplmiottis, Ad. & White, Zool. Samarang, Crust, p. 35, pi. vii. 

 fig. 3 (1848). 



In the typical form of this species, as exemplified by the 

 specimen bearing White's label in the Museum collection, the 

 carapace is covered with large, rounded, granulated tubercles, 

 and the spines of the antero-lateral margins are small, obtuse, 

 and rounded, the last only (lateral epibranehial spine) being 

 greatly elongated. The rostrum is very small, triangular, 

 and acute. The eye-peduncles are short and thick. The 

 upper surface of the arm, wrist, and hand is covered with 

 irregularly disposed rounded tubercles ; the spines of the 

 anterior and posterior margins of the hand are straight and 

 granulated at base ; the under surface of the arms is strongly 

 tuberculated. White's specimen is labelled only as from the 

 u Eastern Seas." 



Below are described three very distinct forms which are 

 provisionally regarded as varieties of L. hoplonotus. They 

 are, unfortunately, represented each by only one, two, or three 

 specimens ; and a larger series might either establish them as 

 distinct species, or show that L. hoplonotus is a widely distri- 

 buted form, subject only to local variations. 



