154 REPORT OF X-EW JERSEY STATE :^IUSEUM. 



Genus Exoglossum Raiinesque. 



The Cut Lips Minnows. 

 Exoglossum maxillingua (Le Sueur). 



Plate 13. 

 Cut Lips ^linnow. 



This pecuHar Httle minnow may be distinguished at a glance 

 from any of the others by its trilobate mandible. 



I have never seen any New Jersey examples and include it on 

 the authority of Mr. Eugene Smith, w^ho found it at Peckman's 

 Brook, where the Morris Canal crosses the brook near Little 

 Falls, in Passaic County. 



Bxoglossuni uiaxUUngua E. Smith, Science, XXIL July, 1905, 

 p. 119. 



Family CATOSTOMATID^. 



The Suckers. 



Body oblong or elongate, usually more or less compressed. 

 Belly not serrated. Head more or less conical. Eye small. 

 Mouth large or small, usually protractile and with fleshy lips. 

 Margin of upper jaw^ formed in middle by small premaxillaries, 

 and on side by maxillaries. Jaws toothless. X^'o barbels. X^os- 

 trils double. Opercles normally developed. Gill-membranes 

 more or less united to isthmus, restricting gill-membranes to 

 sides. Gills 4, a slit behind fourth. Pseudobranchise present. 

 Branchiostegals 3. Lower pharyngeal bones falciform, armed 

 with a single row of numerous comb-like teeth. Alimentary 

 canal long. Stomach simple. No pyloric coeca. Air-vessel large, 

 divided into 2 or 3 parts by transverse constrictions, not sur- 

 rounded by a bony capsule. Scales cycloid, large or small. Head 

 naked, fins not scaly. Lateral line decurved, sometimes wanting. 

 Dorsal fin comparatively long, of 10 to 50 rays without true 

 .spine. Anal fin short. No adipose fin. Caudal fin more or less 



