I 



WESTERN QUARTERLY REPORTER. 169 



The third band of the back of the abdomen is sometimes so 

 near the preceding band as to appear like a dilation of it. 



EPEOLUS Latr., JFabr., Jur. 



E. 4-rASCiATUS. — Black; abdomen quadrifasciate, terminal 

 segment tripuncturcd. 



Inhabits Arkansa. 



Body deep opaque black; three basal joints of the antennae, 

 clypeus and labrum, rufous ; front around the base of the antennae, 

 yellow ; thorax with an anterior and posterior yellow line, the latter 

 so arquated as nearly to attain the former; a broader line beneath 

 the wings ; beneath the scutel a whitish band and two oblique 

 lanceolate spots ; tergum, 4-bauded with yellow, first band very 

 broad, interrupted by a line which is very slightly dilated in the 

 middle ; remaining bands narrower, submarginal, entire ; terminal 

 segment with an oblique yellow lateral spot; feet rufous. 



Length three-fifths of an inch. 



On flowers near the Rocky mountains. It is much larger than 

 E. mercatus F. 



MEGACHILE Latrcille. 



M. LATIMANUS. — Anterior tarsi dilated and with incurved 

 ciliae on the inner side; first joint of the intermediate tarsi one- 

 toothed. (%) 



Inhabits Arkansa. 



Body black ; covered with greenish cinereous hair; hair of the 

 front whitish ; antennse filiform, glabrous ; labrum near the [82] 

 tip, concave, glabrous, polished, tip slightly ciliated ; mandibles tri- 

 dentate on the oblique tip (in the male) and rufous near the tip, 

 on the exterior side ; anterior feet much dilated and with whitish 

 hair, dull rufous ; knees black ; the tarsi dilated and with dense, 

 elongated, incurved ciliae : intermediate thighs ventricose beneath ; 

 tibiae arquated ; tarsi dilated, densely hairy on the inner face, 

 less dilated than the intermediate ones ; abdomen, with the pos- 

 terior edges of the segments densely ciliated ; anus with a deep 

 sinus (in the male.) 



Length nearly three-fifths of an inch. 



In the much dilated appearance of the anterior tarsi, this 

 species is allied to the Apis lagopoda of Linnaeus, and its prox- 

 imate species. 



