026 ooNTi.'iiu rioxs TO NORTH AMERICAN ICHTHYOLOGY iv. 



/ 



tuberanee; posterior nostril slit-like, much larger than the roundish 

 anterior nostril; opercles very short and deep; cheeks and opercles 

 scaly, rest of head naked: month low, horizontal, rather small; both 

 jaws with a hand of eardifonn teeth in front, the anterior series more 

 or less enlarged, suniei imes canine-like; sides of each jaw with 1! to 4 

 series of molars; -ill-rakers small. Scales lari;e. J)orsal continuous, 

 rather low, its spines slender; a procumbent spine before the dorsal. 

 concealed by scales in some of the species; caudal deeply forked: 

 anal spines rather small; pectoral rather narrow, usually very lon.u. 

 8ec(ul iitt< rxjniutl Ixnic of the anal cnl<tr</l, /;r//-.s7m/>r'/, the end of the 

 air-bladder being 1 received into its concave part. "The skidl is ex 

 tended downwards to the chevron of the vomer, and entire on each 

 side behind the forehead ; the parasphenoid has a deep but thin infe- 

 rior crest, which is more or less notched in front of its posterior decur- 

 rent processes; the forehead comparatively narrow, ill-defined, de- 

 pressed above the preorbital region, horizontally pitted; the occipi- 

 tal crest extending far forwards and thickened with vertical osseous 

 deposits, the inner as well as the outer lateral crests depressed near 

 the orbits." (Gill, MSS.) Species rather numerous, mostly of small 

 size, chiefly of tropical America. (Latin calamus, a peri.) 



876 (&) C. inegaccphaHus S\v. /'/// _//V< ; ft: <i< rimmi. 



Light olive, with bluish reflections, the young with dark cross-bars; 

 front of head and preorbital re-ion with hori/ontal anastomosing wavy 

 lines of steel blue, the interspaces yellowish; ventrals pale. JJody com- 

 pressed, the back arched, the anterior profile steep, not very convex; 

 depth of preorbital half head; preoeular prominence not very sharp ; 

 e\e moderaie, 1 in head, ('left of mouth 05 in head. Anterior teeth 

 of each jaw moderately enlarged, G to 8 in number; outermost tooth on 

 each side of upper jaw much larger than the others, forming a x/roitt/ 

 cnniin- iliri'ctrtl out/card <tn<l /'or/rr<l. A concealed ])roeumbeiit spine 

 before dorsal; dorsal of moderate height, the soft rays highest : caudal 

 deeply forked, the upper lobe the longer; anal spines small, gradu- 

 aled : pectoral reaching front of anal, a little longer than head. Head 

 .'.I: d.'pth L'.l. 1). XII, 11'; A. Ill, HI: scales <J-.V,-H5. AVest Indies. 

 nortli to Florida. 



( Pagellut <-'il<nnn^ ('. A V. vl, C0 r ., 1~:',0: <',il,iiinix >ii< ; /<i<'t/>li(tliiN Swainsnn. N;ii. Hist. 

 l'i-li. n. ."-'-'. 1 -:'.'.: I'll i-i/^iiilu-i/M r<i!nnnix ( i iinl InT. i, 1-7: l'ni'\. Ann. L\c. .\;it. Ills'. 

 .\. ^. . 178, 1872: .' ' ulnmux /////(/ (Jmrhriiut, Krvuc tlc.s I';IL;(]S in .Mem. Sue. 



Imp. Bci. Nat. Cherbourg, rlv, n-. 1 . L868. i 

 876 (<;) C. l:ijoii:ilo (I'.lu.-li A. Scliin-idri-) I'ocy. 

 Blaish gray, with brighl relleetions; a blue stripe below eye ; angle 



