NO. 1293. JAPANESE BLENNOID FISHES— JORDAN AND SNYDER. 445 



L peduncle narrow, compressed; profile of head steep; eye large, directed 

 obliquely upward; interorbital space narrow, convex, the orbital rim 

 projecting; jaws equal maxillary, except posterior part, concealed, 

 reaching- a vertical a little behind anterior edge of pupil; cleft of 

 mouth somewhat oblique; teeth minute, in bands on jaw and vomer; 

 gill-membranes forming a broad fold across the isthmus; anterior edge 

 of shoulder-girdle sharp, without protuberances of any kind; gill- 

 rakers on first arch 6, very short; slit behind last gill small; anterior 

 nostril with a small, flat tentacle; a similar tentacle on upper posterior 

 part of eye; no other cirri or tentacles on head. 



Head naked; scales of body ctenoid, those of belly cycloid, a small 

 area at base of ventrals and anteriorly to pectorals naked. Number of 

 scales in an oblique series between latei-al line and insertion of second 

 dorsal, counting upward and forward, 4; between insertion of anal 

 and lateral line, 10; lateral line interrupted, anterior part ending a 

 little in advance of base of soft dorsal, the posterior part beginning 2 





Fig. 1.— Tripterygion ethecstoma. 



or o scales forward on the next lower row, extending to base of caudal, 

 the posterior part without pores, each scale with a deep and narrow 

 scallop. 



Spinous dorsal in 2 parts, the anterior of 3 slender spines, the 

 second and third successively shorter than the first, which is contained 

 2| times in head; in some specimens the membrane uniting the last 

 spine with the back reaches the insertion of the second dorsal; spines 

 of second dorsal slender, highest near the middle of fin; If in head, 

 ra3's of soft dor.sal not branched, the first longest, li in head; mem- 

 branes of dorsals not incised, that of the first with shallow scallops 

 between the spines. First ra}^ of anal about half as long as the 

 second, the following rays blunt, the tips about as large as the bases, 

 the length 2i in head; membranes of fin deeph^ incised between the 

 rays; caudal convex posteriorly, li in head; pectorals large, pointed, 

 the middle rays longest extending to base of sixth anal ray, the lower 

 7 rays simple, consideral)ly enlarged distally, the membrane incised 

 between them, leaving the tips free; most of the upper rays branched, 



