PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 285 



men 23509 a has a crimson spot half as long as the eye on the sheath 

 under the last four dorsal rays. The pectorals of both examples are 

 yellow. 



2. Xystroplites heros (B. & G.) Jor.— "Bream". 



23510 a. D. X, 10 

 23510 b. D. X, 12 



23510 c. D. X, 12 

 23510 £?. D. X, 12 



A. Ill, 10. (Soft dorsal injured.) 

 A. Ill, 11. 



A. Ill, 12. 

 A. Ill, 12. 

 These agree with the types of Pomotis heros B. & G. 



8. Xenotis sanguinolentus (Ag. ) Jor. — " Red-belly Perch". 

 23511 a. D. X, 11 ; A. Ill, 10. 

 23511 b. D. X, 11 ; A. Ill, 10. 

 23511 c. D. X, 12 ; A. Ill, 11. 

 23511 d D.X, 11; A. 111,10. 



The throat, the breast, and the belly are orange red ; the soft dorsal 

 and the anal have a narrow margin of the same color; the external 

 caudal rays are tipped with the same. The pectorals are yellow. The 

 sides are indistinctly banded with black. 



4. Esox americanus Gmel. — "Pike". 



23512. B. XII; D. Ill, 12; A. IV, 10. 

 Length, 7^^ inches (186 millimeters). 



AU the fins are yellow. The skin covering the dorsal and caudal rays, 

 however, is blackish. 



5. Hudsonius euryopa sp. nov. 



Teeth 1, 4-4, 1, with a narrow grinding surface on the first two of the 

 long series. 



23513 a. D. Ill, 7; A. II, 7; Y. I, 7; P. I, 13; 0. 4-, 19, +; L. lat. 

 38; L. trans. 6 + 5. 



23513 b. D. Ill, 7; A. II, 6; Y. I, 7; P. I, 13; 0. +, 19, +; L. lat. 

 38 ; L. trans. 6 + 5. 



The greatest height of the body equals the length of the longest 

 dorsal ray ; it is slightly less than the length of the head, and is con- 

 tained in the length of body, without caudal, 5 times. The length of 

 the head is contained 4 to 4.| times in the same. In specimen 23513 a 

 the length of the pectoral equals the greatest height of the body; in 

 specimen 23513 b it equals the length of the head without the snout. 

 The long diameter of the eye equals ^ of the length of the head. The 

 length of the ventral is contained 6 to 6i times in length of body with- 

 out caudal. The distance of the origin of the dorsal from the snout 

 equals twice the length of the head, and equals the distance of the 

 ventral from the snout. The longest anal ray equals in length the 

 longest ventral ray. The length of the anal basis equals ^ the greatest 

 height of the body. The length of the upper jaw equals the short 



