30 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



corners; teeth compressed, asymmetrical, cusps 5 to 9, upper usually 

 with 6 of which fourth from imier edge largest, lower commonly 

 with 5 with third largest; nostrils large, equal internarial, front 

 valve short with well-developed rounded lobe crossing nasal cavity 

 medianly, widely separated from one another; hind valve not con- 

 tinuous with front one around inner edge of nostril; interorbital 

 convex. Spiracle small, close behind eye, width equals space from 

 orbit. 



Scales minute, nearly erect, slightly bent backward, with strong 

 median cusp and each side basally much smaller one; appearance 

 velvety; upper caudal edge % its length with 2 series of enlarged 

 scales separated by 4 series of small ones forming rather broad arma- 

 ture, immediately below each edge narrow space free from scales 

 probably sensory or luminous. 



First dorsal origin slightly behind ventral origin, front edge 1% 

 in head; second dorsal origin over first third in anal length, front 

 edge 1% in head ; anal length 1%, front edge ly^ ; caudal 2% in rest 

 of body, subcaudal lower than anal, notch near last fourth in fin; 

 pectoral reaches 2% to ventral, width 1% its length, which II/2 in 

 head; ventral length 1%. 



Above warm brown, below lighter. Inside mouth and throat dark. 

 Fins darker than body, blackish terminally. Length, 430 mm. 

 (Garman.) 



Japan. Known only from the type, Mus. Comp. Zool. No. 1107. 



Genus CEPHALOSCYLLIUM Gill 



Cephaloscyllium Giix, Ann. Lyceum Nat. Hist. New York, vol. 7, pp. 407, 408, 

 1862. (Type, ScylUum laticeps Dumeril, orthotypic.) 



Body robust, longer than tail. Head wide, depressed. Snout 

 short, blunt, narrowing rapidly forward. Eye lateral, orbit elongate, 

 lower lid included by upper in closing. Mouth wide, greatly arched, 

 distensible, labial folds rudimentary. Teeth small, numerous, with 

 3 to 5 cusps, median cusp longest. Nostrils widely separated, near 

 lip, nearer to snout end than to mouth angles; no groove to mouth, 

 valves not extended on internarial space, without cirri, posterior 

 short and joined to anterior at inner ends. Last gill opening above 

 pectoral. Spiracle behind eye. First dorsal behind ventral origins. 

 Second dorsal smaller than first, smaller than anal. 



Eastern Pacific to Japan, Australia, and New Zealand. 



ANALYSIS OF SPECIES 



a^. Body variegated with dark bands or blotches and dark or ruddy transverse 

 bands. 



b*. Pectoral reaches % to ventral isabellum 



6*. Pectoral reaches not quite halfway to ventral umbratile 



a'. Uniform grayish; pectoral reaches less than halfway to ventral sufflans 



