PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 351 



plain blackish in males, the base of the anal with a pale streak. Two 

 specimens from Cape San Lucas, supposed to be the female of this 

 species, have the tentacles much shorter, not longer than pui)il, lack 

 the pale stripes on the head, and have a very distinct blackish blotch 

 on front of spinous dorsal. 



The following specimens of this species (all of them, except 2481, ap- 

 parently males) are in the National Museum: 



489. (Girard's type.) . Monterey. Trowbridge. 



7859. (3). San Diego. A. Cassidy. 



26645 (2). "California" (probably San Diego). Mus. Comp. Zool. 



30742. San Diego. W. Cooper. 



2481. Cape San Lucas. J. Xantus. 



United States National Museum, Jtme 21, 1882. 



DEStJRIPTIOlV OF A NEW SPECIES OF COIVODOX (COIVOOON SER- 

 RIFERS fro:?! ROCA SOLEDAD, 5.0WER CALIFORNIA. 



By B>AVIS> S. JOROAN aiad CMAKI.ES II. GBILBERT. 



Conodon serrifer, sp. uov. 



Head Sf in length to base of caudal; depth 3f. D. XI, 1, 12; A. HI, 

 7. Scales G-53-1 5. Length of largest specimen 8 inches. 



Body comparatively elongate, elliptical, little compressed, the dorsal 

 and ventral outhnes regularly and nearly equally curved, the back not 

 much elevated and not specially comj^ressed. Head rather short, broad, 

 not very acute anteriorly, the profile nearly straight from snout to base 

 of dorsal ; snout short, about equal in length to the large eye, 34 in head. 

 Interorbital area broad and quite liat, its width 41- in head. Mouth 

 moderate, terminal, oblique, the lips moderately developed. Maxillary 

 extendiug to opposite front of eye, 2f in head. Premaxillaries in front 

 on level of middle of eye. 



Teeth in moderate bands, those in the outer series enlarged, but much 

 less so than in C. nohilis, the teeth slenderer than in the latter; two 

 teeth in front of lower jaw somewhat canine-like. Preorbital narrow, 

 its least width about two-fifths diameter of eye. Jaws equal in front. 



Preopercle with its posterior margin somewhat concave, armed with 

 strong teeth, which are directed backward and somewhat upward. An- 

 gle of preopercle with a strong spine directed backward, its length about 

 half length of eye. Lower limb of preopercle with strong spinous teeth 

 (as in the species of Plectropoma)^ directed forward and downward, be- 

 coming gradually smaller anteriorl3^ Nostrils small, roundish, the an- 

 terior largest. Gill-rakers rather slender, of moderate length. 



Scales rather irregularly arranged, those above lateral line forming- 

 series parallel with the lateral line, which are somewhat broken opposite 



