23] 



Fam. 13. UMBRIDyE. 



Esoces, part., Mailer, Ahhandl. Akad. Wiss. Berl. 1842, p. 188. 



Head and body covered with scales ; barbels none. 

 Margin of the upper jaw formed by the intermaxilla- 

 ries mesially and by the maxillaries laterally. Adipose 

 fin none; the dorsal fin belongs partly to the abdo- 

 minal portion of the vertebral column. Stomach 

 without blind sac ; pyloric appendages none. Pseu- 

 dobranchige glandular, hidden ; air-bladder simple. 



Freshwater fishes from Central Europe and temperate North 

 America. 



Only one genus is known, which, after being associated with 

 various genera, proves to be represented in North America by a 

 second species. 



1. UMBRA. 



Umbra, Kramer, Elench. Ani'in. Austr. infer. 1756. 

 Melanura, Agassiz, Sillim. Amer. Journ. 1853, xvi. p. 135. 



Body oblong, covered with cycloid scales of moderate size, without 

 radiated striae ; lateral line inconspicuous ; eye rather small ; cleft 

 of the mouth of moderate width. Ventral fins inserted below, or 

 somewhat in front of, the commencement of the dorsal, which is 

 much longer than the short anal : caudal fin rounded. Yilliform 

 teeth in the jaws, and on the vomer and the palatine bones. 



1. Umbra crameri. 



Hundsfisch ; Ribahal (in Hun (/an/). 



Gobius caninus, Marsil. Da/inb. iv. p. 43, tab. 13. fig. 2. 



Cvpriuodon umbra, Ciiv. Ref/ne Anim. 



Umbra crameri, 3Mler, Abhandl. Akad. Wigs. Berl. 1842, p. 188 ; 



Cuv. S,- Val. xix. p. 542, pi. 590 (fig. med.) ; Heckel 6f Kner, Siiss- 



wasserjische, p. 202, c. fig. opt. 



B. 5-6. D. 15-16. A. 7-8. Y. 6. P. 13. L. lat. 33-35. 

 L. transv. 5/7. 



The height of the body is nearly equal to the length of the head, 

 and two-sevenths or one-fourth of the total (without caudal). 

 Brownish, with darker spots and dots. 



Stagnant waters of Austria and Hungary ; neighbourhood of 

 Odessa. 



From 3 to 4 inches long. 



(i-h. Adult and half-a:ro-,vn. Austria. 



