136 ACADEMY OF NATUEAL SCIENCES 



color of the miarophagus is dark piceous above and beneath, the 

 legs are sHghtly violaceous. 



It is very probable that the excrementi is allied to the Blach- 

 humii of Fab., if not the same. 



2. G. FiLicORNis. — Rufous; thorax tridentate; clypeus with 

 an elongated horn. 



Inhabits Upper Missouri. 



Body pale brownish-rufous : clypeus, anterior and lateral mar- 

 gins punctured, entire ; horn elongated, linear, slightly recurved 

 and compressed, longer than the greatest breadth of the head : 

 thorax unequal ; three tubercles, placed in a transverse series, the 

 exterior ones compressed and longitudinal ; intermediate tubercle 

 transverse subemarginate ; an indented line behind the middle 

 tubercle, and a concavity each side : scutel triangular : elytra 

 with punctured strise. 



Length one-fourth of an inch. 



I obtained it near the Council Bluff on the Missouri. Mr. T. 

 Nuttall obtained specimens on the Arkansa. Belongs to the 

 genus Odontseus Megerle. [21'2] 



APHODIUS Illig. 



1. A. BicoLOR. — Above black; beneath rufous; clypeus widely 

 emargiuate. 



Inhabits the United States. 



ScarabseiiH hicolor. Knoch in Melsh. Catal. 



Body above deep black immaculate, punctured : clypeus densely 

 punctured, with a very slightly elevated, obtuse, obsolete, central 

 tubercle ; anterior edge very obtusely and widely emarginated : 

 thorax densely punctured in every part, excepting upon the ante- 

 rior edge which is of a pale color : elytra profoundly striated, 

 strise crenated ; interstitial lines minutely punctured : beneath 

 pale reddish-brown : pectus and antennae blackish : jwstpectus and 

 venter punctured. 



Var. a. Elytra with a few obsolete hardly perceptible rufous 

 .spots. 



Length one-fifth of an inch. 



This insect is not uncommon in various parts of the United 

 States. I have found it in Pennsylvania and near Cape Gerardeau 

 on the Mississippi. 



[Vol. III. 



