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392 



Say^s Descriptions of 



which the surface is dull piceous at tip ; basal segment 

 with a longitudinal impressed line at base : ventcTy seg- 

 ments on the posterior margins with dull whitish hair. 



Length about half an inch. 



^ With more dense and obvious hair on the front. 



Length less than half an inch. 



In warm days of March and April, this species may 

 be observed flying about near the surface of the earth. 



' SphecodeSj Latr. 



S. conjertus. Black, abdomen rufous, black at tip ; 



punctures dense.. 



Inhab. Indiana. 



Body black, with close-set punctures : head rather 

 small with whitish hairs : mandibles piceous black : 



middle thoracic longitudinal line very distinct, 



orax 



scutel 



line, continued from the thorax: wings hyaline: abdomen 

 polished; three basal joints rufous ; remainder black. 



Length three tenths of an inch. 



Resembles the gibbusj F. but is smaller; with a pro- 

 portionally smaller head and much more dense puncturing 

 on the thorax and scuteL 



Hyl^us, Latr. 



i 



H- modestus. ? Black, opake : abdomen polished : 



hypostoma on each side with a triangular whitish spot : 



collar with an abbreviated, transverse, yellowish line each 



side : pleura with a yellowish spot under the humerus : 



' wings hyaline, with blackish nervures : feet with whitish 

 knees. 



