120 



M. albida, L. Syst. I p. 520, from Catesb. Soutli. Carol. 

 II pi. 6; Mitch. Lit. & Phil. Trans. New York, I p. 447; 

 Cut. & Val. XI p. 94; DeKay, New York Fauna, Fishes, 

 p, 146. 



Brought to the Baltimore markets from the salt-water of 

 the southern part of Chesapeake Bay. It enters the Bay, 

 from the ocean, but nothing is reported as to its spawning in 

 our region. 



2~M. lineatus. 



Body cylindrical; the outline of the back nearly as convex 

 as that of the abdomen. Scales large, and easily detached. 

 Head smaller than in most of the species; eyes large, with a 

 thick skin. Purplish brown above; lighter on the sides, with 

 ten or twelve dark brown longitudinal stripes, which disap- 

 peai soon after death. Head with greenish metallic reflec- 

 tions; sides of the head yellowish. A dark purplish spot at 

 the base of the pectoral fins; abdomen pearl-grey. Length, 

 6 to 9 inches. 



Fin-rays:— D. 4. 8; P. 16; V. 1. 5; A. 3. 8; C. 12. 



M. lineatus, (Mitch.) Cuv. & Val., XI. p. 96; DeKav, New 

 York Faun., Fish., p. 144, pi. 15, fig. 42. 



Of rare occurrence in our markets, and no doubt brought 

 from the salt waters of Chesapeake Bay. 



S. I. 



XL— GASTEROSTEIDE. 



APELTES, (DeKay,) Brev. 



A. quadracus. 



Pour-Spined Stickle-Back. 



Body fusiform, compressed, highest opposite tbe first dorsal 

 spine; back arched; tail exceedingly slender. Head small. 

 In front of the dorsal fin are three, and occasionally four 

 movable spines, with a small membrane attached to each, all 

 lying in a groove. Ventrals reduced to a single, stout, tri- 

 angular spine, serrated on its front edge. Anal fin with a 

 sharj), recurved spine. Olive-green, marbled with dusky 

 above; whitish beneath. Length, 1 to 2 inches. 



Fin-rays:— D. 3 or 4. 1. 12; P. 12; V. 1; A. 1. 10; C. 13. 



A. quadracus, Mitch. Trans. Lit. & Phil. Soc, I. p. 430, 



