460 CALIFORNIA ACADEMY OF SCIENCES. 88 
Pectoral reaching to vent; ventrals reaching half way 
to second anal ray; second anal spine a little longer and 
stronger than third; upper lobe of caudal the longer, 
about equal to head. 
Color as in Lythrulon flaviguttatum, in spirits, dark 
steel gray; a small very distinct pale spot on each scale 
of back and sides, surrounded by darker. This spot is, 
in spirits, light yellowish; in life of a pearly blue. Head 
plain; a small dusky blotch under angle of preopercle. 
Fins plain bright yellow in life. Young with a large black 
blotch at base of caudal, as in Hemulon stetndachnert 
and Orthostechus maculicauda, and without the dusky 
horizontal streaks seen in most of the other species: 4 
This species differs from Lythrulon flaviguttatum in 
having fewer gill-rakers, the depth and arch of the back 
greater. 
Described from a specimen (No. 2963, L. S. Jr. Univ. 
Mus.) 9 inches long. Two others were obtained. 
135. Orthostceechus maculicauda Gill. 
This small species was not found at Mazatlan either by | 
Dr. Gilbert or by the Hopkins expedition. Specimens 
from Mazatlan and from Acapulco have been recorded 
by Steindachner. It was obtained by Xantus at Cape San 
Lucas and Colima, and by Dr. Gilbert at La Paz and 
Panama. 
136. Anisotremus interruptus (Gill). MojaArron. 
This large species occurs in great abundance about 
the islands near Mazatlan, many specimens, the largest 
over two feet in length, having been obtained by dynamite. 
It is occasionally seen in the Astillero. It is widely dis- 
tributed along the coast, and specimens were obtained by 
Dr. Gilbert in 1881 at Mazatlan. 
Body grayish anteriorly, most specimens gray before, 
