824 CALIFORNIA ACADEMY OF SCIENCES. 
of pectoral fins produced, extending beyond the mem- 
brane, the longest extending beyond the upper ray of the 
fin; anal longer and lower than soft dorsal, ending at the 
same corresponding place; last ray reaching to the fifteenth 
plate before caudal fin. Ventrals differing in length in 
the different sexes, reaching from slightly beyond vent to 
nearly half its length beyond; inserted slightly behind 
pectorals; caudal fin rounded behind; vent anterior, sit- 
uated on the tenth plate in front of anal. 
Color dark brown, belly white; sides crossed with ir- 
regular white bars, giving the fish a mottled appearance, 
besides dark dashes as though the fish had been bathed 
in ink (2 eddy) ; snout black; a black streak along lower 
edge of preopercle; a black spot on iris above; dorsals 
light, mottled with black; anal white with dark mottlings, 
a dark bar across the posterior rays, the tips of all the 
rays white; ventrals black, abruptly white at tips; pecto- 
ral and caudal dark with a white border, a light spot in 
the center of fins, and many white spots on the rays; a 
black spot at base of pectoral. 
Two specimens collected with a seine near Point Or- 
chard, the largest 7 inches in length. They are in the 
Museum of the Leland Stanford Jr. University, No. 3135. 
This species is the type of a distinct genus, Averrun- 
cus, allied to Podothecus, but with teeth on the vomer and 
palatines. The lack of the median movable rostral spine 
separates it from Odontopyx7s, in which genus the dorsal 
fins are very small. 
89. Xystes axinophrys Jordan and Starks, n. gen and 
Spi). late: xen. 
Head 3% in length of body; depth 5; dorsal [X-8; anal 
10; pectoral 15; lateral line 38; orbit 4 in head; snout 
to tip of rostral spines 3%; maxillary 3%; interorbital 
3%; pectoral 1%; highest dorsal spine 2%; _ highest 
