52 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOI.OGY III. 



b. Body deep. coiiiineKsi d ; d«^pth '.i\ to 3J in length : fins all {greatly elevated; tlie 



hi'ij;lit ot" tlio dorsal livf-HJxtlis llii; Icntcth of the lii-ad :.ninzzk', anti-nor 

 part of dorsal tin, and a bioad tTChfent in tlif inuldlc of tlie caudal fm 

 bright scarlet: posterior margin of caudal iilackish ; no black spot at 



baso of caudal pvkkhomki.as, 2. 



bh. Body more elongate, less compressid, its depth 4 to \{ in length : fins all rather 

 low, the longest dorsal ray scarcely J length of head : dorsal, anal, and 

 caudal fins chieUy bright crimson: no definite dark margin to caudal : 



a faint black caudal spot x^nura, 3. 



Section II. Anal fin short, its rays 1, 8, or 1,9. 



* Teeth one-rowed, 4-4. Dorsal fin scarcely at all posterior to ventrals, its first ray 

 nearer snout than base of caudal: body elongate, compressed : month 

 snjallish, obliqire, rather inferior : dorsal fin greatly elevated, tbe longest 

 ray, in njales, longer than the head : black dorsal blotch well maiked: 

 dorsal, anal, and caudal fius chiefly of a br ght ferrugiuous-oraugc ; 

 a blue streak along sides : sizt! small ; length 2 J inches.. .c.\i.r,i.SK>JA, 4. 

 "Teeth two-rowed, I, 4-4, 1 (often 1, 4-4, 2, in C. eurystoma). 



c. Black markings of the dorsal fin not in the form of a horizontal bar across the 



fin. 

 d. Adult males without red markings on tbe fius. 



e. No distinct black or dark blue spot at base of caudal : body short and deep, 

 strongly compressed : fins not greatly elevated, the dorsal largely of a 

 bright lustrous jnile greeu : black dorsal markings distinct : a bluish 

 streak along sides: males with the whole body tuberculatc, except the 

 space anterior to the ventrals and below the lateral liuo : head pointed : 

 mouth oblique, the upjjcr jaw projecting: size small; length ',i in- 

 ches CHLOIU.STIA, 5. 



ee. A rather faint dark blue caudal spot, i>recedfd ity a very distinct l;iteral 

 band of clear blue : sides chiilly blue and silvery: tins clear yellow, the 

 black markings obscure: body slender: mouth small: fins nut greatly 

 elevattd : size small; length JiJ inches CjEI{ULK.\, ti. 



eee. A large, very conspicuous jet-black spot at base of caudal : body elongate, 

 moderately compressed : color pale olivaceous or bluish: sides silvery : 

 fin-markings ratber obscure : tins rather low : mouth oblique, the lower 

 jaw the shorter : .'■cales large ; size large : length 4 inches, stig.matuija,?. 

 dd. Adult males with the vertical fins chiefly red : a well-marked black caudal 

 8j)ot, less distinct than in ('. niifjitialitni. 

 f. Mouth largo, quite oblique, the j:iws about e<|ual, the ma.xillary reach- 

 ing to »)jtpoi>ite the eye and llu jircmaxilluyiiK antiiiorly ou the level of 

 thl^ pujiil : Itody slender, c(Mnpre.><8cd : dorsal fin dusky at base, jet-black 

 on last rays, the fin otherwise, as well as the anal amd caudal i)ale Ver- 

 million : caudal peduncle tuberculate: dorsal luai kings usually distiuct 



in both sexes : size small ; length '2^ inches iiiiciikuistia, 8. 



ff. Mouth nearly horizontal, overlap]ied by the heavy snout, the maxillary 

 not reaching to the eye, and thi* jfem axil! aries anteriorly below the lev«d 

 of the orbit : dorsal tin <lusky at the base and on the last rays, ihe greater 

 ])art of the fin, as well as of the i*aiulal, bright carmine : ctdoration of 

 body quite dark, l)hie in males, olive in females: dorsal markings obscure 

 in the latter: bixly stont, not greatly compussed, Ihe back sunn what 



elevated: size large. ; length 4 inches Cali.i.stia, U. 



cc. Black markings of the dorsal fin in the form of a horizontal bar across the fin 

 midway: body stont and deep, not greatly comjiressed : head heavy: 

 mouth large, oblicpie, with equal jaws: eye very large; a small but dis- 

 tinct black caudal spot : tins with pa'e red : teeth .sometimes 1, 4-4, 2: 

 hize large; length 4 inches: appcaraucc of Liinhis. i iiivsioma. 10. 



