1879.] THE COREAN AND JAPANESE SEAS. 29 



broad, with an obscui'e tooth on its outer margin. Anterior legs in 

 the female small; hands compressed, and fingers straight; the am- 

 bulatory legs short, those of the first pair not much exceeding in 

 length the greatest breadth of the carapace. Length of carapace 

 and rostrum I inch 2^ lines, breadth 11^ lines. 



Two specimens, females, were obtained, one at Kunashir (Kunasiri 

 Island ?), N. Japan, at a depth of 1 1 fathoms, bottom small stones ; 

 the other from the N.E. coast of Yeso Island. 



The nearest ally of this species seems to be the Doclea gracilipes 

 of Stimpson (P. Ac. Nat. Sci. Phil. p. 216, 1857), from Hong-Kong, 

 from which it differs in the tuberculation of the carapace and very 

 short anterior legs. 



Streets, in a notice of the genus Libinia (P. Ac. Nat. Sci. Phil, 

 p. 106, 1870), has described a new species, L. rhotnboidea, from the 

 East Indies, which may easily be distinguished from the present by 

 the existence of strong spines on the branchial regions and lateral 

 margins. 



Another Asiatic species is the Libinia bidentata, A. M.-Edw. 

 (Journ. Mus. Godeffroy, i. pt. 4, p. 11, 1873), from the Amoor, 

 which has fewer spines upon the surface of the body. Several Doclem 

 have also been described by Bleeker (Acta Soc. Sci. Indo-Neerl. ii. 

 pp. 7-15, 1857), from the Indian archipelago; but none have any 

 near affinity with Libinia orientalis. 



Parthenopid^. 

 gonatonotus pentagonus. 



Gonatonotus pentagonus, Ad. & White, P. Z. S. 1847, p. 58; 

 Zool. Samarang, Crust, p. 33, pi. vi. fig. 7 (1848). 



Javan Sea, near Billiton Island, lat. 3° 21' S., long. 108° 39' E. 

 Dredged at a depth of 12 fathoms. 



The single specimen collected is a male, and differs from the female 

 from Borneo, figured by Adams and White, only in the greater length 

 and strength of the anterior legs ; the postabdomen is seven-jointed 

 and narrow. There are two young specimens of this species, from 

 reefs on the N.E. coast of Australia, in the British-Museum collection. 



This is the only species of Crustacean collected elsewhere than in 

 the Japanese and Corean seas. 



Lambrus intermedixjs, sp. n. 



Carapace triangular, almost destitute of tubercles above, and with- 

 out large spines on the margins ; on the upper surface are three ele- 

 vated ridges, one on the gastric and cardiac, and one on each branchial 

 region ; the median ridge is marked with about four obscure tubercles ; 

 the branchial ridges are obscurely granulated ; and on the sides of the 

 branchial regions are seven to eight small triangular marginal teeth, 

 which under a lens are seen to be denticulated; the last of these is 

 the largest ; on the posterior margin are seven small distant tubercles. 

 There is an elongate depression between the eyes. The rostrum is 

 triangular, smooth and acute ; the anterior legs are of moderate length 



