496 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 
ANALYSIS OF SPECIES OF ORTHOPRISTIS. 
a. Dorsal spines, XII or XIII. 
b. Soft dorsal and anal sealeless; mouth small; temporal crest, which arises from 
behind the eye, very low and inconspicuous, the upper edge below base 
of the high supraoccipital crest, which originates over the pupil (exam- 
ined in poeyi, chrysopterus, chaleeus, and ruber). -..----- [ORTHOPRISTIS. | 
c. Preorbital narrow, more than 5 in head; second anal spine much stronger 
than third and about the same length, less than 3 in head and about 
equal in length to first anal ray; scales large, 7-49-13. Body com- 
pressed, the back moderately elevated; anterior profile a little concave 
and depressed above eye; preopercle finely and sharply serrate; gill- 
rakers short and slender; snout short, rather sharp, equal to maxillary; 
eye large; jaws subequal, with the outer teeth scarcely enlarged. Seales 
arranged above in series which are oblique only to second third of dor- 
sal, behind that point horizontal. Dorsal fin low, but divided nearly to 
base; spines slender, the last one not half first soft ray, which is low but 
larger than the others; anal low, with concave margin; pectoral long; 
caudal forked, upper lobe longer. Color, grayish above, silvery below; 
dark opercular edging conspicuous; no distinct markings. Head, 34; 
depth, 33; D. xu, 15; A.1, 11; scales, 7-49-13; maxillary, 32; eye, 
3%; preorbital, 53; pectoral, 1; snout, 3}; spinous dorsal, 2; second 
anal spine, 24; base soft dorsal in spinous, 13 ........--- 3ENNETTI, 76. 
cc. Preorbital broad, less than 5 in head; second anal spine about as stout as 
third, more than 3 in ‘head, not as long as first ray; scales small; ante- 
rior profile not concave. 
d. Anal, 111, 10 or 11; snout short and sharp, more than 3 in head; eye large, 
about 4in head. Form and general appearance of chrysopterus; body 
oblong, compressed, the back elevated, the profile steep and nearly 
straight; convex at the nape; preopercle finely and sharply serrate; teeth 
small, outer above a little enlarged. 
e. Lower jaw included; soft dorsal with 14 rays; scales large, 8-54-15; gill- 
rakers very short and slender, x + 15; pectoral short, 14 in head; max- 
illary not reaching to eye. Dorsal nearly continuous, the soft dorsal low, 
with convex outlines; anal rounded, not very low; second spine as long 
and as large as third, much shorter than soft rays; caudal moderate, 
the upper lobe longer. Color, bluish above, silvery below; a brownish 
spot on center of each scale above, these forming streaks much as in letho- 
pristis, those above the lateral line less continuous and a little more 
wavy than in lethopristis; the young with two faint longitudinal dusky 
streaks on each side of back; both dorsals with rows of brownish spots. - 
Head, 34; depth, 23; D. xu, 14; A. m1, 10; scales, 8-54-15; maxillary, 34; 
eye, 4; preorbital, 4; pectoral, 14; snout, 34; spinous dorsal, 24; second 
anal spine, 34; anal ray, 24; base soft dorsal in spinous, 1}... RUBER, 77. 
ee. Jaws subequal; soft dorsal 15-16; scales small, 9-58-18; gill-rakers very 
short and small, x +12; pectoral faleate, long, equal to head; maxillary 
reaching to eye. Outline of dorsal straight, no notch; spines low and 
slender; soft dorsal low and equal; anal rather higher and shorter, the 
spines graduated; edge of fin convex; caudal moderately forked, the 
upper lobe longer. Color paler than in lethopristis; pale chalky-bluish 
streaks along the edges of the rows of scales; a pale streak below base 
of dorsal; fins rather pale, the soft dorsal mottled with darker. Head, 
3}; depth, 28; D. xm or x11, 15 or 16; A. m1, 10 or 11; scales, 9-58-18; 
maxillary, 34; eye, 43; preorbital, 4}; pectoral, 14; snout, 23; spinous 
dorsal 24; second anal spine, 4; anal rays, 2%; base soft dorsal in spinous, 
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