312 SMITHSONIAN MISCELLANEOUS COLLECTIONS [voL. 48 
pose of scraping shells from the rocks on which they are found. 
Mollusks form the principal food of the fishes and crushed shells 
may be almost any time found in the stomach. On account of the 
Fic. 60.—Exoglossum macxillingua. Lower bones. An, Angular; Ar, Artic- 
ular; B.Hy, Basihyoid; 3Br, Branchiostegal rays; C.Hy, Ceratohyoid; Cl, 
Clavicle Ccenosteon; G.Hy, Glossohyal; JO, Interopercular; M.Mass, Masseter 
Muscle; P.O, Preopercular; Pt, Pterygoid; Qu, Quadrate; S.O, Subopercular ; 
U.Hy, Urohyoid. After Cope. 
adaptation and food habits of the type the name Cochlobori (shellfish- 
eaters) was given to the subfamily by Cope. 
The Exoglossum maxillingua is the only common and naturally 
the best known species of the group, and is sufficiently large and 
conspicuous to have received a number of popular names, such as 
cut-lips, day chub, nigger chub, and nigger dick, the first, of course, 
Fic. 61.—Lip of Exoglossum maxil- Fic. 62—Teeth of Exvoglosswm. After 
lingua. After Jordan and Agassiz. 
Evermann. 
recalling the trenchant lower jaw and the last two the dark color. 
Its geographical range is from the St. Lawrence basin and Lakes 
Ontario and Champlain southwards into Virginia. It is, as Jordan 
a ee 
