430 
x 
BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 
e’. Seven to ten weakly spinous carinae on scales of body; 
scales of head with lower and more numerous carinae; 
5+ rows of scales between origin of second dorsal and 
lateral line, excluding lateral line series; infraorbital ridge 
scales in a double series only on preopercular region of 
ridge; area between ridge and orbit with scales of reduced 
size; orbit, 1.88 in postorbital length of head, equal to 
least width of interorbital, which is contained 1.3 times in 
postorbital; preoral length of snout, 3.5 in head; length 
Or maxillany 3/00 = oles ee ee carinifer. 
ce’. Snout with its tip more or less acuminate; sides of snout less 
convex, sometimes nearly straight; the width between its 
anterolateral angles less than 0.85 in length before that 
point, usually much less; scales on ridges of head less 
strengthened than in platorhynchus group; flesh firmer 
(japonicus group). 
7’. Four or four and one-half rows of scales in a series from 
origin of second dorsal to, but excluding, the lateral line 
series. 
g. Underside of head completely scaled. 
i’. Three to seven strong spinous carinae on scales of body; 
orbit, 1.0 to 1.8 in postorbital length of head; pectorals 
longer than postorbital portion of head; pyloric caeca 
about 20; color of peritoneum blackish____-_-__-~- smithi. 
h’. Hight or nine weak spinous carinae on scales; orbit, 
1.8 in postorbital length (as measured on Alcock’s 
figure) ; pectorals shorter than postorbital portion of 
head; pyloric caeca about 40; color of peritoneum 
}SIIVERYASTCY? 6 ee eee flabellispinis. 
g°. Underside of head scaleless. x 
i. Distance from center of anus to base of outer ventrgl ray 
equal to, or less than, length of orbit; a scaleless antero- 
lateral groove on snout; nasal fossa naked; scales of 
median rostral ridge with carinae radiating in all di- 
rections from center of scale; median series of scales 
between occipital and postorbital ridges little enlarged ; 
orbit, 1.22 to 1.7 in snout, 1.05 to 1.25 in postorbital 
length of head; spinous carinae on scales of body weak, 
6 to ain numbers] 42 eee radcliffei. 
#. Distance from anus to base of outer ventral ray decidedly 
longer than length of orbit; anterolateral region of 
snout and lower half of nasal fossa scaled; seales of 
median rostral ridge with carinae diverging outward 
and backward from front of scale; median series of 
scales between occipital and postorbital ridges much 
enlarged ;* spinous carinae on scales of body stronger, 
3 to 9 in number. 
j’. Orbit almost as long as postorbital length of head. 
k*. Three to five spinous carinae on scales; snout longer, 
with outlines weakly convex; orbit, 1.8 in snout; 
barbdl,. 6 "in® orbit2 YS See es productus. 
1These characters derived from the squamation of the head have not been verified in 
C. anatirostris, but probably will not be found different in that species. 
i A a de se i “el ele 
