48 PRELIMINAKY REPORT 



Head contained 4| times in the body. Depth 4^. Dorsal fin with 

 10 rays. Anal 9. Scales 37-230-30. Gill rakers about 6+11. 

 Length 18 inches. 



This valuable fish is found native in the state only in the 

 streams which flow into Lake Superior from the north, where it is 

 quite common. 



Order HAPLOMI. 

 Family UMBRID^. The Mud Minnows. 



Soft rayed fishes. Body rather heavy, compressed posteriorly; 

 head large and flattened above; mouth of medium size with teeth 

 on the jaws, vomer and palatine bones; upper jaw not protractile; 

 maxillary bones forming the posterior part of the upper jaw. Gill 

 rakers not well developed ; branchiostegal rays 6 to 8. The cycloid 

 scales cover the head and body, no lateral line. No pyloric cseca; 

 pseudobranchia not well developed; air-bladder simple. 



But one genus and one species found in the state. 



Genus UMBRA (Kramer) Mliller. 

 Umbra limi (Kirtland). Mud Minnow. Dogfish. 



Color dark, sometimes almost brown, much mottled; 14 narrow 

 light cross bars; a dark bar at the base of the caudal fin. Body 

 oblong, rather heavy. Head contained 3f times in the length. 

 Depth 4^. Dorsal inserted rather posteriorly, but its first ray 

 further forward than the first ray of the anal, contains 14 rays. 

 Anal 8. Ventrals with G rays. Branchiostegal rays 6. Length 4 

 inches. 



Not a very common fish in the state. A fish fond of muddy 

 streams and pools where there is aquatic vegetation, although itself 

 carniverous. Specimens have been recorded from the region of 

 Gull and Cass Lakes in Cass County; Leech Lake (Nat. Hist. Surv., 

 1893-5); Lakes Wita and Washington, near Mankato (Cox, 1893-4). 



Family LUCIIDiE The Pikes. 



Body very much elongate, the back not elevated, not greatly 

 compressed. Head very long and much depressed; cleft of the 

 mouth about half the length of the head; lower jaw longer than the 

 upper; upper jaw not protractile; maxillary bones forming a part 



