NO. 1909. JAPANESE SHORE FISHES— SNYDER. 433 



lateral line tentacles appear. The species appears to grow larger 

 than the others, there being individuals 220 milliiiieters long in the 

 collection. 



PSEUDOBLENNIUS JAPONICUS (Stelndachner). 



Misaki tide j)ools. 



This species is apparently distinct from Poddbrus cottoides Rich- 

 ardson.* The contour of the body is difTerent, the caudal peduncle 

 deeper, the spinous dorsal lower and also differing in shape, the 

 outline of the fin being less evenly curved ; the color of the fins also 

 differs, the spinous dorsal being broadly edged with dusky and 

 having a dark spot on the membrane between the second and third 

 rays, the soft dorsal and anal with eight or more obhque rows of small 

 spots on the rays, and the caudal with about four broad, vertical, dusky 

 bars. Richardson does not mention nasal or supraorbital tentacles 

 which are so conspicuous on the Japanese specimens. There are 

 tlu-ee or four slender, flat tentacles always present on the lateral line 

 near the tip of the pectoral fin in P. japonicus. 



The short maxillary, not usually extending beyond the pupil, the 

 presence of tentacles on the lateral line, and also of broad, leaf-hke 

 nasal and supraorbital tentacles which are not conspicuously fringed, 

 the series of brownish black spots, often in twos and threes along the 

 lateral line, and the absence of large, round, silvery spots on the 

 lower half of the body, form a combination of characters which ^vill 

 serve to distinguish this species among others of the genus known to 

 occur in Japan. 



Slender nuchal tentacles are usually present. The nasal spines 

 protrude from the skin. 



PSEUDOBLENNIUS ARGENTEUS (Doderlein). 



Hakodate, Aikawa, and Nanao markets and pools. 



Individuals of this species are adorned in life with large, brilliant 

 silvery spots on the sides. This may be known from other Japanese 

 species by the long maxillary which usually extends beyond the orbit, 

 unfringed nasal and suborbital tentacles, by the absence of tentacles 

 on the nape, and lateral line and by the conspicuous, silvery stripes 

 on the sides. wSolutions of formalin utterly destroy the silvery pig- 

 ment (which is well preserved in alcohol), and then the species is 

 apt to be confused ^vith P. 'percoides and P. japonicus. 



PSEUDOBLENNIUS MARMORATUS (Doderlein). 



Tokyo market; Misaki pools. 



In this species the snouts of the males are conspicuously blunter 

 than those of the females. In both sexes there is a small barbel near 

 the posterior end of the maxillary, and there are usually a few minute, 

 dermal flaps on the lateral line near the end of the pectoral. 



• Voyage Sainaranfc, Fishes, p. 13, pi. l,<lgs. 1-6; not Pseudoblennius cottoides Jordan and Starks, Proc. 

 U. S. Nat. Mus., vol. 27, 1904, p. 311, which is the present species. 



20441°— Proc.N.M.voI.42— 12 28 



