93. EMBIOTOCID^ — MICROMETRUS. 
589 
spines rather high, some of the middle ones highest, the posterior not 
so high as the soft rays ; the soft dorsal shortened. Anal moderate, 
with weak spines. Caudal forked. Pharyngeals normal, the teeth all 
conic. Vertebrte (in M. aggregatus) 15 + 20; in M. frenatus 13 + 21. 
Species of small size and bright coloration, small; perpoq, 
measure, i. c., small size.) 
a. Lower lip with a freoum. {Brachi/istius* Gill.) 
926. HI. fre:iatus (Gill) J. & G. 
Body elongate, compressed, regnlarly elliptical, with a slender pointed 
head and a long caudal peduncle; i>rohle much depressed over the eyes, 
the snout projecting. Month very small, oblique, maxillary not reach- 
ing orbit. Cheeks with two rows of scales. Dorsal spines very long 
and rather strong, the sixth and seventh the longest and a little longer 
than the soft rays. Caudal rather deeply forked. Gill-rakers slender, 
rather long. Color dark olive brown above, each scale with a dark 
spot at base, followed by a light mark; below bright light coppery- 
red; each scale with a blue spot and dark puuctulations; head colored 
like the body; fins all light reddish. Head 3|; depth 3. D. VHII, 15; 
A. Ill, 22; Lat. 1. 40. L. 8 inches. Entire Pacific coast of United 
States ; locally very abundant. 
{Brachyistius frenatus Gill, Proc. Acad. Nat. Sci. Phila. 1832, 275: Brachyistius fre- 
natus Jordan & Gilhert, Proc. U. S. Nat. Mus. 1880, 304: Ditremabrevipinne Gunther, iv, 
248.) 
927. HI. I’osaceus Jordan & Gilbert. 
Body oblong-ovate, deepest at the shoulders ; the profile thence to the 
occiput con vex, the occipital and iuterorbital region considerably depress- 
ed; body tapering backwards from the shoulders into a short and slender 
caudal peduncle. Head small, thick, the snout blunt. Mouth compara- 
tively large, little oblique, the lower jaw included; maxillary slightly pass- 
ing the vertical from the front of the orbit ; premaxillary anteriorly on a 
level with the inferior margin of the pupil. Eye very large, its diameter 
about oue-thiid the length of the head; interorbital region very broad. 
Teeth large, conical, truncate at tip, about ; none on the sides of the 
lower jaw. Scales on the cheeks in three series. Spinous dorsal higlL 
the first spine about two-fifths the length of the highest ; the sixth to tenth 
of nearly equal height, and higher than the soft rays. Anal fin with the 
base oblique, the spines rather strong, and more or less curved. Caudal 
*Gill, Proc. Acad. Nat. Sci. Phila. 1832, 275: type Brachyistius frenatus Gill. 
{(Jpaxvi, short; idviov, sail.) 
