Jordan and I^,vermann. — Fishes of I/orth America. 669 



and end of the scales ; longest dorsal ray 1^ in head ; base of dorsal 5 times 

 in body; anal inserted under third ray of dorsal ; pectoral 5 in length 

 of body ; length of head contained 3f times in the total without caudal, 

 and much less than the depth at dorsal origin ; ventral reaching about to 

 vent, its length nearly \ head. Upper parts brown ; ligliter below, prob- 

 ably orange in life; the operculum silvery; a purple stripe along the 

 middle of the body, its greatest width about equal to the length of the 

 eye; abdomen silvery, this color extending up to tlie purple stripe; a pur- 

 plish strijte on the edge of the caudal peduncle, from tlie eud of the anal 

 to the caudal. Length 2 inches. Rio Lerma, Guanajuato ; one specimen 

 known. (Bean.) (bilhwatus, two-lined.) 



Cliaraimhm hilln.-aJiix, Bean, Pioc. U. S. Nat. Mils., 1«87, 371, ij1. 20, fi^. 2, Rio Lerma, 

 Guanajuato, Mexico. (Typo, No. 37832. Coll. Dugts.) 



9S3. CHARACODOX VARIATIS, Bean. 



Head 3i; depth 3i; eye 3i. D. 13 or 14; A. 15 or 10; scales 35-15. 

 Head broad and depressed ; the nape moderately arched. Snout short, 

 the lower jaw strongly projecting. Thirteen or fouiteen bicuspid teeth 

 in outer series of upper jaw and 16 to 18 in lower jaw ; band of villiform 

 teeth behind the incisors fully developed in both jaws; mandible not 

 extending back to front of orbit, its length about equal to that of orbit. 

 Jaws moderately i^rotractile. Mandil)le almost vertical when mouth is 

 closed. Snout shorter than eye, which is about f interorbital space. 

 Scales on top of head little enlarged. Opercle united by membrane to 

 the shoulder girdle to slightly above the upper edge of the pectoral. 

 Insertion of the dorsal about midway between the end of the scales and 

 the hinder margin of the orbit ; longest dorsal ray in male 11 in head ; 

 anal inserted under seventh or eighth ray of dorsal, its longest ray about 

 § head ; pectoral 5J- to 6 in length ; ventral midway between tip of 

 snout and end of scales. Head i total length including caudal, and 

 equaling depth of body at the dorsal origin. Male chestnut brown, with 

 an indistinct dark lateral stripe made up of a series of interrupted dark 

 blotches ; opercle silvery ; abdomen yellowish. Female olive brown above, 

 lighter below ; the opercle silvery, overlaid below with orange; the abdo- 

 men with a yellowish tinge; lips dtisky ; iris pale ; scales of upper half of 

 body dusky at base ; lower half of body with numerous dark spots, the 

 largest about as long as the pupil. Length 2 to 3 inches. Tributaries of 

 Kio Lerma, about Guanajuato and City of Mexico; locally common, (var- 

 iatus, variegated.) 



Cfliaracorlon vurialus, Bean, Proc. U. S. Nat. Mus., 1887, 370, pi. 21), tig. 1, femali', Guanajuato, 

 Mexico. (Typo, No. 37808. Coll. Duges.) 



Chanuodon femigiiieus. Bean, Proc. U. S. Nat. Mus., 1887, 372, pi. 20, figs. 3 ami 4, Guana- 

 juato, Mexico. (Type, No. 37810. Coll. Duges.) 



Oiaracodon varialus. Bean, Proc. tJ. S. Nat. Mus., 1892, 285; according to Dr. Bean,/<Tcr(3iiitH» 

 is tlio male of varialus. 



984. CHARACODON FURCIDEXS, Jordan & Gilbert. 



Head 4; depth 3|; eye rather large, 3^^ in head. D. 15 to 17; A. 13; 

 scales about 50-15. Body comparatively elongate, not greatly compressed, 

 the head rather low and broad, depressed, the profile rising evenly from 



