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



cent. C. angusta is distinguished by the existence of three 

 spines on the antero-lateral margins &c. 



Paramithrax (Leptomithrax) compressives, sp. n. 



Carapace subpyriform, moderately convex, and covered 

 with numerous small, wart-like, rounded tubercles, but without 

 spines, except that on the gastric and cardiac region there is a 

 small conical spine. On the antero-lateral margins, behind 

 the strong spines of the upper margin of the orbit, is a series 

 of six small spines. The spines of the rostrum are short, 

 slender, and but slightly divergent. The basal antennal joint 

 is not much enlarged, and has two granulated spines at 

 its distal end, and one on its inner margin. There is a 

 blunt granulated tubercle on the anterior margin of the epi- 

 stome, below the antennulary fossse. The merus joint of the 

 outer maxillipedes is broad and rounded at its antero-external 

 and produced and subacute at its antero-internal angle. The 

 anterior legs (in the female) are small, slender, and perfectly 

 smooth, without spines or tubercles. The ambulatory legs 

 are smooth and very robust, with the antepenultimate and 

 penultimate joints longitudinally sulcated ; the antepenultimate 

 joints in all except the last pair are flattened and greatly 

 dilated distally ; the terminal joints are straight and smooth ; 

 postabdomen wanting. Length of carapace to base of rostrum 

 2 inches. 



Hah. Canton [Hon. E. -India Co.). 



This species is represented by a single female specimen. 

 In the form and tuberculation of the carapace it resembles P. 

 harhicornis, Latr., but differs from that species and all others 

 of the genus in the smoothness of the anterior legs and the 

 remarkable dilatation of the antepenultimate joints of the am- 

 bulatory legs. It is probable that the carapace and legs were 

 densely pubescent in the living animal. It would also appear 

 to be allied to P. ursus, Herbst, which, according to Gerst- 

 secker's description, has the " tibia " anteriorly triangularly 

 dilated, but differs in having very broad and short rostral 

 spines and a greatly enlarged tooth posterior to the postocular 

 tooth. 



Paramithrax (Leptomithrax) hrevirostris, sp. n. 



Carapace subtriangular, without spines on its upper surface, 

 but covered with small scattered tubercles. Antero-lateral 

 margins with five spines (not including the postocular). Spines 

 of rostrum very short, triangular, and acute. Basal antennal 

 joint with two prominent spines at its distal end. Anterior 

 legs (in the female) slender; arm minutely spinulose above; 



