1879.] THE COREAN AND JAPANESE SEAS. 45 



The frontal portion of the carapace is triangular, deflexed, concave 

 above, with five obscure marginal teeth (including the supraocular 

 and median frontal teeth). Carapace convex, sparsely pubescent, 

 without any indication of the different regions ; antero-lateral mar- 

 gin with three small teeth. The anterior legs are small, weak- 

 pubescent, and smooth. The second and third legs are compressed,' 

 pubescent, and with a tubercle at the distal extremity of the penul- 

 timate and antepenultimate joints. This individual may be the 

 young of C. tumida, Stimpsou, from the island of Ousima ; it would 

 not in any case be desirable to constitute it the type of a new species. 

 Length barely 3 lilies. The specimen is a young male. 



t 



HoMOLlD^? 



Pa r atym o lus . 

 The carapace is shaped nearly as in Homola, e. g. with the front 

 aiid postfrontal region deflexed, behind the hepatic region flat, 

 with the sides nearly straight. The front is prominent and narrow^ 

 composed of two coalescent spines. The antennules are small and 

 apparently broken in the single specimen collected. The antennee 

 are elongated, the joints of llie peduncle hairy, the flagella very 

 slender. The eyes are slender, of normal sliape, the peduncles 

 cylindrical and laterally projecting, not, as in Homola, divided into 

 two portions. The outer maxillipeds are rather slender, the second 

 about twice as long as the third joint, the exoguath slender and not 

 prolonged beyond the end of the third joint. The anterior legs in 

 the female very slender, fingers longer tlian the slender palm ; the 

 ambulatory legs all alike in form, slender, smooiii, the tarsal joints 

 long, straight, and unarmed, those of the fiftii pair not raised upon 

 the dorsal surface of the cephalothorax. Postabdomen (of female) 

 jointed, ovate. 



The systematic position of this genus is somewhat uncertain, as 

 the specimen, which is unique and very small, cannot be dissected 

 with safety. Stimpson placed his genus Tymolus among the Dorip- 

 pidcs; but the outer maxillipeds of Paratymolus are more of the 

 Maioid than of the Leucosiid type ; and on account of its general 

 resemblance to Homola 1 place it, at least provisionally, with that 

 genus among the Anomura Maiidica. Although the legs are not 

 dorsally raised upon the cephalothorax, it evinces a certain degra- 

 dation from the Brachyural type in the absence of defined orbits, 

 the long antennae, and several other points ; but it may hereafter be 

 thought better to place it among the Maioid Brachyura. The outer 

 maxilipeds are less pediform than iu Homola, but less distinctly 

 opercuHform than in the generaUty of Maioid Crustaceans. 



Paratymolus pubescens, sp. n. (Plate II. fig. 6.) 

 Carapace and legs everywhere covered with a close velvety pu- 

 bescence ; a strong spine at the angle of the hepatic region, and 

 another smaller in front of it, two small tubercles in front of the 

 gastric and one on the cardiac region, and two in the middle of the 



