ilie Inland Sea of Japan. 21 



length of liead. Snout as long as eye, tlio diameter of wliicli 

 is 3 times in the length of head and twice the interorbital 

 Avidth. Maxillary extending to below anterior ^ir of eye. 

 Interorbital space concave, scaly ; supraorbital tentacles 

 feeble ; supraorbital ridge with 2 or 3 teeth and anteriorly 

 and posteriorly with smaller denticulations; suborbital ridge 

 denticulated, separated from the eye by a space as wide as ^- 

 the diameter of eye ; pifeopeiculum with '6 spines. Scales 

 deciduous, about o5 in a longitudinal series. Dorsal XIII 10, 

 the fourth and fifth spines the longest, nearly | the length 

 of the fish (without caudal). Anal III 6. Pectoral without 

 detached rays, extending to base of caudal ; ventral extending 

 a little beyond origin of anal. Caudal peduncle 1^ as long as 

 deep. Olivaceous ; vertical fins pale, the soft dorsal with a 

 few dark spots ; pectoral and ventral blackisli. 



A single specimen, ij'S mm. in length to the base of caudal. 



Allied to P. nigripinnis, Gilchrist, which has a smaller 

 eye and broader interorbital region. 



Named after Dr. D. S. Jordan, who has so greatly added 

 to our knowledge of the Fishes of Japan during the last few 

 years. 



15. Erisphex achrurus, sp. n. (PL II. fig. 3.) 



Depth of body 2|-3 in the length, length of head 3^-3|. 

 Snout as long as eye, the diameter of which is \ the length 

 of head and equal to the interorbital width. Maxillary ex- 

 tending a little beyond anterior margin of eye. Pra?orbital 

 with 2 spines, the posterior the longer; prteoperculum with 

 4 spines, the uppermost the longest. Body covered with 

 velvety prickles ; lateral line with about 12 pores. Dorsal 

 XII 12, the first spine \ the length of head, the third and 

 fourth the shortest and about t the length of head, from it 

 the rays increase in length to the middle soft rays, which are 

 f the length of head. Anal II 10. Pectoral extending to 

 origin of anal or a little beyond. Ventral I 2. Caudal sub- 

 truncate. Reddish brown, marbled with darker ; dorsal, anal, 

 and pectoral with dark markings or nearly uniformly black- 

 ish ; caudal |)ale, sharply separated from the dark ground- 

 colour of the body. 



Four specimens, measuring up to 70 mm. in total length, 

 from deptlis of 30-40 fathoms. 



Comparison of the largest example with one of E. Pottii, 

 Stdr., of 7G mm., shows the latter species to differ in having 

 a larger head and larger mouth, as well as in coloration. 



