Jordan and Evermann. Fishes of North America. 473 



Subgenus ALLOSOMUS, Jordan. 



771. AROYROSOMUS TULLIBEE (Richardson). 



(TULLIBEE; "MONGREL WHITEFISH.") 



Head 4 to 4| ; depth 3 to 3i ; eye 41. D. 11 or 12; A. 11; scales 

 8 or 9-67 to 74-8. Gill rakers about 16 + 31, long and slender, the longest 

 about equal to eye. ,Body short, deep, compressed, shad-like, the dorsal 

 and ventral curves similar. Distance from tip of snout to occiput 2 in 

 distance from occiput to origin of dorsal. Caudal peduncle short and 

 deep. Head conic, compressed, much as in A. nigripinnis. Mouth large, 

 lower jaw projecting, the maxillary as long as the eye, about 3 in head, 

 extending past the front of eye, its supplemental bone narrowly 

 ovate, with prolonged point ; jaws equal when closed. Eye large, as 

 long as snout. Preorbital narrow ; supraorbital elongate, rectangular. 

 Scales anteriorly considerably enlarged, their diameter half larger than 

 the diameter of those on the caudal peduncle, the free margins less con- 

 vex than in other species. Color bluish above ; sides white, punctate 

 with fine 4ts ; each scale with a silvery area, these forming a series of 

 distinct longitudinal stripes. Length 18 inches. Great Lakes, Lake of 

 the Woods, and northward. A handsome and well-marked species. 

 (Tullibee, a name of Indian origin, used by the fur traders.) 



Salmo (Coregomis) tullibee, RICHARDSON, Fauna Bor.-Amer., m, 201, 1836, Cumberland House, 



Pine Island Lake. 

 Coregonus tullibee, GUNTHKR, Cat., vi, 199, 1866 ; JORDAN & GILBERT, Synopsis, 301, 1883. 



Represented in small lakes of southern Michigan by 



7 7 la. ARGYROSOMUS TULLIBEE BISSELLI, Bollman. 



Maxillary reaching middle of eye ; lower jaw projecting. Eye 4f in 

 head ; scales 80 to 82, anteriorly scarcely larger than posteriorly. Head 

 4| ; depth 3. Rawson Lake and Howard Lake, Michigan. (Named for 

 John H. Bissell, then president of the Michigan Fish Commission.) 



Coregomts tullibee bisselli, BOLLMAN, Bull. U. S. Fish Comm., viu, 1888, 223, Rawson Lake 

 and Howard Lake, Michigan. (Type, No. 40619. Coll. Bollman.) 



233. STENODUS, Richardson. 



(INCONNU.) 



Stenodus* RICHARDSON, in Back's Narrative Arctic Land Expedition, Back Appendix, 521, 1836, 



(mackenzii). 

 Luciotmtta, GUNTHER, Cat., vi, 164, 1866, (mackenzii). 



Body rather elongate, little compressed. Head long, the cleft of the 

 mouth wide. Maxillary long, broad, lanceolate, extending far backward, 

 lower jaw projecting much beyond the upper. Dentition very feeble, 

 the teeth extremely small; maxillary toothless; vomer, palatines, and 

 tongue with narrow bands of minute villiform teeth. Gill rakers rigid, 



* " This fish, though agreeing with the trout in the structure of the jaws, differs from all the 

 subgenera established by Cuvier in the Regne Animal, iu having the teeth disposed in velvet-like 

 bands, and broader on the vomer and palatine bones. From the crowded, minute teeth, the 

 name of Staiodn* 7nay be given to the subgenus of which the inconnu or Salmo mackemii is the 

 only ascertained species." Richardson. 



