Occasional Papers of flic Miisciiiii of Zoology 35 



pressed, least depth 2 1,2 its length. Head compressed, flat- 

 tened sides scarcely converging below, upper profile inclined 

 more than lower, rather abruptly descending in front so angle 

 forms obtusely over nostrils. Snout surface convex, also pro- 

 file length 4/5 its width. Eye large, rounded, high, at first 

 2/5 in head. Alouth low, nearly horizontal. Jaws even. Pre- 

 maxillaries protractile downward. ]\Iaxillary reaches eye 

 front. Lips thin, little flesh}'. Slender barbel at maxillary 

 end, about 2/3 in pupil. Tongue large, thick, adnate. Man- 

 dible depressed, rami slightly elevated inside mouth. Preor- 

 bital trapezoidal, width 3 4 its length, latter i 1/5 in eye. 

 Other suborbitals all narrow. Gill-opening about midway in 

 head, nearly forward to eye. Isthmus broadly depressed, 

 width I 3/4 in eye. Gill-rakers 2-^5 short weak denticles, 

 about 6 in filaments, latter i 1/2 in eye. Pseudobranchise 2/3 

 of filaments. Teeth 2,4-4.2, slightly hooked, without grind- 

 ing-surfaces. Scales smaller, rather crowded on body an- 

 teriorly, especially predorsal, preventral and breast. L. 1. 

 complete, first slightly decurved till midway along side. Tubes 

 simple, well exposed. Dorsal origin midway between front 

 nostril and caudal base. Anal inserted well behind dorsal 

 base. Pectoral 2/t, to ventral, upper rays longest. Ventral 

 inserted about opposite dorsal, reaches 4/5 to anal. Vent 

 close before anal. 



Color in alcohol dull brownish generally, below paler or 

 more brassy. Dorsal, caudal and pectoral brownish, other 

 fins paler. Iris pale brassy. 



Length 146 mm. (caudal damaged). 



No. 2.152, A. N. S. P., cotype (type) of Ccratichthys pros- 

 fhemiits Cope. Montreal River, Keeweenaw Point, Lake Su- 

 perior. Dr. J. H. Slack. 



