230 Mr. E. J. Miers on Malaysian Crustacea. 



is always much more considerably developed, and there is a 

 distinct spine at the end of the basal antennal joint. 



Lambrus contrarius (Herbst). 



A male and female are retained for the Museum. No defi- 

 nite locality was preserved ; but Bleeker states that this species 

 is not uncommon at the Moluccas. A comparison of the 

 Malaysian examples with specimens from the Mauritius con- 

 vinces me of the correctness of Bleeker's determination. 



Lambrus lamelliger. 



Lambrus lamelliger, White, P. Z. S. p. 58 (1847). 



Lambrus lamettifrons, Adams and White, Zool. Samarang, Crust, p. 26, 



pi. v. fig. 1 (1848). 

 Lambrus Humphii, Bleeker, Act. Soc. Indo-Neerl. ii. p. 18 (1857), nee 



C. longimanus, Rumph. 



An adult male without definite locality is in the collection, 

 which I refer to this species. The gastric, cardiac, and bran- 

 chial regions are very much elevated and indistinctly tubercu- 

 lated ; on the branchial regions one of the tubercles is much 

 more prominent and obtuse. The rostrum is very prominent 

 on its upper surface ; and the interorbital space is deeply con- 

 cave ; the anterior legs are very robust, and the anterior and 

 posterior margins of the arm and hand are armed with promi- 

 ment, rounded, obtuse tubercles, of which there are only two 

 or three on the posterior (or outer) margin of the hand. The 

 ambulatory legs are smooth. 



The specimen from the Philippine Islands designated L. 

 lamelliger in the Museum collection is of small size, and the 

 tubercles of the carapace and anterior legs are more acute and 

 spine-like. 



Bleeker's description of L. Rumphii also applies to this 

 species ; but the figure of Rumph (Amboin. Rariteit. p. 16, 

 pi. viii. fig. 3), copied by Herbst (Nat. Krabben, i. p. 252, 

 pi. xix. fig. 106), cited by Bleeker agrees far better with 

 specimens from the Philippines in the Museum collection, 

 named, perhaps wrongly, Lambrus tur?-iger, Ad. & White. 

 This latter species is distinguished from the foregoing by 

 having a long prominent spine on each of the regions of the 

 carapace, and the subcylindrical anterior legs covered with 

 small nearly uniform tubercles. 



Lambrus laciniatus ? 



? Lambrus laciniatus, De Haan, Faun. Japon. Crust, p. 91, pi. xxii. 

 figs. 2, 3 (1889). 



A male, without definite locality, is in the collection. It 



