FISHES OF THE ALTAMAHA BASIN. 35 



which is somewhat larger than the anal ; the two dorsal fins connected 

 by membrane. Dorsal Xl-I, 11. Anal II, 8. 



Dorsal spines a little more than half the length of head. Pectorals 

 and ventrals well developed. 



Color, in spirits : Olive, with an orange spot on on each scale, these 

 forming continuous lines along the rows of scales. These lines are quite 

 conspicuous, as in Xenisma catenatum. Three dark blotches across the 

 back : one in front of dorsal, forming a black spot on the anterior dor- 

 sal spines ; one between the two dorsal fins, forming a similar black 

 spot on the last part of the spiuous dorsal ; and one on the caudal pedun- 

 cle, behind the second dorsal. 



Sides with about six irregular dark olive blotches just below the 

 lateral line. Second dorsal, caudal, and pectoral extensively dusky- 

 shaded. Anal unicolor. Head dusky above, a dark line downward, and 

 one forward from eye. 



A female specimen taken lacked the lines of orange spots, and it was 

 more distinctly blotched on the sides. In life, the male specimen had 

 the entire anal fin, the cheeks, opercles, and a bar below the eye bright 

 blue. The extreme edge of the spinous dorsal was blackish; below this 

 bright orange red, and a dusky bar at the base. The colored lines of 

 spots were ferruginous, or scarlet-red, rather than orange. 



Length 2J inches. 



Two specimens only were taken, in the upper waters of the Oconee 

 Eiver, at Sulphur Springs, in Hall County, Georgia. 



This is one of the most beautiful of this interesting genus. In the 

 smooth head, it resembles N. thalassinKs, and differs from the others 

 known. The entirely dissimilar coloration separates it at once from JV. 

 thalassimts. 



OBNTEARCHID^;. 



Genus MICROPTERUS Lacepede. 

 4. MICROPTERUS SALMOIDES (Lac.} Gill. 



Yar. salmoides. 

 Abundant in the Oconee and Ocmulgee. 



Genus CHJSNOBRYTTUS Gill 

 5. CHJENOBRYTTUS VIRIDIS (C. & V.) Jordan. 

 The " War-mouth Perch" is abundant in the Ocmulgee. 



