Jordan and Evermann. — Fishes of North America. 



2809 



Page 417. After I)oro>iOina jxtvuenae add: 



202(a). SIGNALOSA, Ev<Tui;mn A: Kendall. 



Signalosa. Eveemann & Kendall, J5u11. U. S. Fish Connn. 1897 (Feb. '.., 1898), 127 (alcha. 

 falayce) . 



Body short, deep, and compressed, the form somewhat elliptical ; ventral 

 outline more strongly curved than the dorsal; head rather large, snout 

 sharp and pointed, not tumid ; mouth small, obli.iue, the lower jaw scarcely 

 included; maxillary of 3 pieces, broad and curved, but without notch m 

 the outer margin as in Dorosoma; caudal peduncle short and deep. Bran- 

 chiostegals 5 ; pseudobranchi:e large ; gill rakers short and very numerous, 

 about 340 in number. No teeth ; adipose eyelid present ; stomach gi/zard- 

 like ; scutes about 17 + 10. Last ray of dorsal very long and filamentous. 

 This genus is allied to Dorosoma, from which it is plainly distinguished by 

 the absence of the notch in the maxillary, the more pointed snout, the 

 less-included lower jaw, the shorter anal fm, larger scales, and the fewer 

 scutes It differs from A losa in the very numerous gill rakers, the character 

 of the dorsal fin, and in other respects. (sigtiMm, a flagstaff or pole ; Alosa, 

 the shad; a reference to the long dorsal ray.) 



679(11). SIGNALOSA ATCHAFALAY*, Evennami & Kendall. 



Head 3^; depth 3f ; eye 3^ in head; snout .".i ; maxillary 3,1. D. I, 12; 

 A I '^4 • scales 42-15 ; scutes 17 + 10. Body oblong-elliptical, compressed, 

 the back in front of dorsal narrow; ventral edge sharp, serrate; head 

 small mouth terminal, oblhiue, lower jaw slightly included ; snout rather 

 pointed, not blunt, as in Dorosoma cepedianum; maxillary in 3 pieces, long 

 and curved, reaching vertical at front of pupil, the outer edge not notched; 

 no teeth. Caudal peduncle short, compressed, and deep. Origm ot dorsal 

 fin over bnae of ventrals, much nearer tip of snout than base of caudal, 

 the last ray filamentous, about i longer than head and nearly reaching 

 base of caudal ; the first dorsal ray a bout 2 in the last one ; pectoral 1^ in 

 head, reaching base of ventrals; ventrals short, reaching only halfway to 

 vent their length 1\ in pectorals; anal rays short, base of fin 1^ in head; 

 scutes moderate; caudal widely forked, the lower lobe the longer; 

 scales large, thin, deciduous, somewhat crowded anteriorly; accessory 

 scales at bases of pectorals and ventrals; base of caudal with smal 

 scales Color bluish black or dark olivaceous on back and sides to level 

 of the'iet-bla.k humeral spot; rest of sides and under parts bright silvery ; 

 dorsal and caudal dusky; other fins plain. The cotypes from Grand 

 Plains Bayou are 2 females with ripe roe. They are U and 5i inches 

 long, respectively, and difter from the types only in the deeper body and 

 the^much darker coloration of the upper parts. 

 3030 99 



