[17] REVIEW OF THE SCIMNID®. 359 
n. Pectoral fins reaching nearly or quite to the tips of ven- 
trals, their length more than half head. 
o. Scales small (12-86-X), the number of pores in the 
lateral line about 70; head rather long, 
compressed aud pointed; maxillary a 
little more than half head, reaching just 
past eye; lateral line becoming straight 
opposite the vent; body rather slender, 
compressed ; eye large, 6 in head ; pre- 
maxillaries in front, entirely below eye; 
canines small, two usually present; 
longest dorsal spine 2 in head; longest 
soft-ray 23; middle rays of caudal con- 
siderably produced, 14 in head; anal 
spine rather small and stout; ventrals 
little more than 2 in head; pectorals 13. 
Color bluish above, silvery below, upper 
parts and especially the middle of the 
* sides punctate with dark points; upper 
fins dark, their margins dusky, lining 
of opercle black ; inside of mouth bright 
yellow in life. Head 3} in length; 
depth 44. D. IX-I,20; A.II,8. Scales 
12-66 (pores)-X ; 86 rows of scales. 
XANTHULUM, 16. 
oo. Scales moderate (8-66-18), the pores in the lateral 
line about 63; head large, bluntish; the 
snout shorter than in Cestreus stolzmanni, 
the snout 4 to 44in head; eye 64in head; 
maxillary nearly half head, reaching well 
past eye; body rather robust; lateral 
line becoming straight at a point well in 
advance of vent; dorsal spines slender, 
the longest 24 in head; caudal double 
truncate, the middlerays longer than the 
head without snout; pectorals nearly 
reaching tips of ventrals, more than half 
length of head ; second anal spine evi- 
dent. Color white, somewhat bluish 
above. Head 34 inlength; depth4. D. 
X-I, 21; A. II, 9; scales 8-63 (pores)-18 ; 
66 series of scales ......---.. ALBUS, 17. 
nn. Pectoral fins short, reaching little past middle of ven- 
trals, their length not more than half 
head; body elongate, somewhat com- 
pressed; mouth oblique; maxillary 2) 
in head, extending to posterior margin 
of pupil; snout rather sharp, 4 in head ; 
canines rather small; gill-rakers short- 
ish, 4-+-7; body comparatively slender 
and elongate; scales rather large, all 
strongly ctenoid; lateral line becoming 
straight just before front of second dor- 
sal; longest dorsal spines 24 in head; 
soft dorsal slightly falcate, the first rays 
