228 REPORT OF STATE GEOLOGIST. 



A. Lower jaw rather shorter than the upper and included within it 

 in the closed mouth. Gill-rakers sixteen to twenty-five below 

 the angle of the gill arch. 



a. Gill-rakers short, about sixteen below the angle. 



quadrilateralis, p. 228. 

 aa. Gill-rakers long, slender, twenty-five below the angle. 



clupeiforynis, p, 229. 

 AA. Jaws even, or the lower projecting beyond upper. Gill-rakers 

 about thirty, below the angle of gill-arch. 



b. Body slender, the depth in length more thati four times. 



c. Anal rays, ten. hoyi, p. 230. 

 cc. Anal rays, twelve artedi, p. 230. 



bb. Body deeper, depth in length less than four times. 



d. Depth more than three and one-half times Fins blue- 



black, nirjripinnis, p. 281. 



dd. Depth less than three and one-half times. Fins dusky. 



tuUihee;-^ p. 228. 



CoREGONUS QUADRILATERALIS Richardson. 



Menomonee White-fish; Bound White fish. 



Jordan and Gilbert, 1882, 8, 298; Jordan, 1884, 12, 541. 



Body, slightly compressed, tapering each way from the dorsal fin, 

 depth in length four and one-half. Back rather broad. Head small, 

 in length five times; snout pointed, and projecting beyond the mouth, 

 one-fourth the length Of the head, narrow^ from side to side. Premax- 

 illary bone higher than wide. Mouth small ; premaxillary broad and 

 short, not extending back to the eye. The lower jaw included within 

 the upper in the closed mouth. Freorbital bone wider than the pupil. 

 Gill-rakers short. Dorsal rays, eleven ; anal, ten. Scales, 8-85-9. 

 Color dark bluish above, silvery below. Lakes of New Hampshire and 

 northward. Dr. Jordan, in his "Catalogue of the Fishes of Illinois" 

 {14-, No. 2, 54), states that this species is often taken in Lake Michigan ; 

 it may therefore be regarded as an Indiana fish. 



'■' CORKGONUS TULLIBEK Rich. 



Tullihee. 



.Jordan and Gilbert, 1882, S, 301; Jordan, 1884, 12, 541. 



The tullibee is probably not to be reckoned an Indiana fish; it is even doubtful if it is a 

 resident of the waters of Lake Michigan. The body is deep and compressed, the depth in 

 the length three times. The outline in front of the dorsal considerably arched. Head, in 

 length, four. Jaws equal when closed; when open, the lower projecting. Dorsal rays, 

 eleven; anal, eleven. Scales, 9-75-10. Color, gray or olive above, quite dark on the middle 

 of the back; sides silvery, with indications of longitudinal stripes; belly pale; fins dusky. 



