22 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY III. 



Eye moderate, less than snout, 4 in head. Mouth rather small, quite 

 oblique, the maxillary not attaining the line of the orbit, the upper jaw 

 projecting beyond the lower, especially in spring males. The head and 

 mouth considerably resemble those parts in P. analostanus. 



Scales much deeper than long, very closely and smoothly imbricated, 

 more or less dark-edged above. 5-37-3. Lateral line decurved. 



Fins moderately developed : dorsal distinctly behind ventrals, its first 

 ray about midway between nostrils and the base of the caudal. Dorsal 

 1, 8. Anal 1, 8. 



Nuptial tubercles in the male greatly developed, covering rather 

 sparsely the top of the head and the region anterior to the dorsal. In 

 addition, similar tubercles cover the caudal peduncle and the whole sides 

 of the body, except the space below the lateral line and in front of the 

 ventrals. The tubercles on the body are considerably smaller than 

 those on the head, and smaller than in xcenura or pyrrhomelas, but they 

 cover a much larger area than in any of the latter species of the genus. 

 Chin tuberculate. 



Teeth 1, 4-4, 1, entire, without masticatory surface. 



Coloration, in life : General color a dark steel-blue, a very distinct 

 blue stripe along each side of the caudal peduncle, as in C. ccerulea, but 

 fainter : sides of body with fine steely-purple lustre : back clear green : 

 head clear brownish : iris white: cheeks of a pale violet color: lower 

 part of sides becoming rather abruptly milky-white: dorsal fin with 

 the usual large black spot on the last rays well developed, and the 

 usual milk-white pigment in the tips : lower part of the dorsal fin with 

 pigment of a fine clear green color, somewhat as in analostanus, but 

 unusually bright: caudal fin chiefly dusky, its tips milky and the base 

 somewhat so ; the middle of the fin has a slight reddish tinge : anal 

 fin entirely milky, a faint dusky spot on its last rays, resembling that 

 on the dorsal : ventral fins milky. 



Female and young specimens are more slender, and the bright colors 

 are usually wanting or obscured. 



Size small ; length of largest specimens less than three inches. 



In form, this species resembles C. pyrrhomclas, but the short anal 

 (eight rays instead of ten) will always distinguish the species. The 

 coloration of the male is different, being much less brilliant, although 

 perhaps more delicate. G. chloristia resembles in color G. ccerulea most, 

 but the latter species has a much more slender form. 



Habitat. Abundant in the clear waters of Saluda Eiver, with G. 



