(594 ZOOLOGY FISHES. 



the typical specimen especially, and the spots are found mostly above the 

 lateral line on the entire caiidal peduncle, dorsal and caudal fins, are 

 rather scattered, less numerous on peduncle than S. splhirus. Sides with 

 short, broad, longitudinal bars of crimson, and a band of the same color 

 occupies the fissure within each ramus of the mandible and skin on the 

 median side of it. The fins are all more or less crimsoned ; none black- 

 bordered. Color bluish silvery-lead color on back, yellowish-white 

 beneath. Largest specimen 21i inches. We have in our collection a fine 

 series of this species and of its varieties. The typical is represented by a 

 number, and after a careful examination of the remaining ones we are 

 obliged to note some differences which may entitle them to be considered 

 subspecies or varieties. 



Of the lot marked 204 B, from the Rio Grande, we have examined 

 nine specimens, and find them typical in all respects. 



Lot No. A, from Rio Grande, Colorado, which may be called var. a, or 

 large spotted variety, contains two specimens. In these we find that the 

 spots are quite large, round, but somewhat isolated and infrequent; greatest 

 number on tail ; none on the head. The posterior extremity of maxillary 

 bone is on a line with the posterior rim of the orbit. 



Lot No. 596 from White River, Arizona, containing three specimens, 

 may be called var. &, or large and small spotted variety. Spots large and 

 small, larger and more frequent on dorsal region and head; maxillary 

 extending beyond rim of orbit. 



Lot No. 205 A, two specimens, from Rio Grande, Colorado, have very 

 small and partially semicircular spots, the concentration of which is near the 

 caudal region ; few on cheeks ; none on top of head. Eye 5 times in 

 greatest length of side of head. Head 4.50 of total length, including caudal. 

 Dorsal midway between insertion of caudal and end of snout. Scales, 37-40, 

 below dorsal first ray to lateral stripe, 43-45 below. Maxillary extends 

 seven twenty-fifths of an inch behind posterior rim of orbit. 



Radii: Br. XI: XI; D. 12-12; A. 11-11. The scales in these speci- 

 mens are as large nearly as S. spilurus. 



