124 ACADEMY OF NATURAL SCIENCES 



Rocky Mountains. Its elytra are truncated like those of the 

 Necrop}iagi{_Necro]p]wri]. It belongs to Wilkins' genus Necrodes. 



CATOPS Payk. 



C. BASlLARis. — Black, covered with very short, yellowish 

 hair ) elytra, brown, paler at base. 



Inhabits Missouri. 



Body black, covered with numerous short yellowish hairs : eyes 

 fuscous : antennas blackish ; two basal joints yellowish-white ; 

 eighth joint very small, transverse, shortest; preceding and three 

 terminal joints largest, the latter somewhat piceous : thorax 

 transverse-quadrate, convex, rather narrower before ; lateral edge 

 regularly arquatcd; basal and anterior edge subrectilinear ; 

 angles rounded : scutel triangular : elytra brownish, paler at base ; 

 a distinct subsutural impressed line : labrum and palpi pale 

 piceous : beneath blackish piceous ; feet dark piceous. 



Length fourteen-hundredths of an inch. 



Found under wood at Engineer Cantonment on the Slissouri. 



CERCUS Latr. 



1. C. PALLlPENNis. — Black; elytra pale, testaceous. 

 Inhabits Arkansa. 



Body deep black, punctured ; numerous short yellowish hairs : 

 antennse, pale, rufous : elytra, pale, testaceous, immaculate, trans- 

 versely truncated at tip: [195] tergum, two terminal joints 

 equal in length : feet and venter pale rufous. 



Length less than three-tenths of an inch. Taken near the 

 Rocky Mountains. 



[A species of CarpopMlus, afterwards described as C fioralis 

 Er. The size given is erroneous, it should be three-twentieths. 

 — Lec] 



2. C. NIGER. — Black, punctured, hirsute; mouth, antenuceand 

 feet, yellowish red. 



Inhabits the United States. 



Nitidula nigra Melsh. Catal. 



Body short, oval, brownish-black, hirsute, punctured ; hairs 

 very short, yellowish ; punctures dilated, dense : head con- 

 fluently jiunctured, punctures small : labrum piceous : antennce 

 piceous, third joint but little longer than the second ; clava 



[Vol. III. 



