/ 



406 Say^s Desciiptions of 



m 



.4. M. rastica. Tergum with white bands, double on 

 the second segment ; hair of the thorax whitish. 

 Inhab. Indiana. 



n 



^ Body black, with whitish hair: aiitennce longer thari 

 the stethidium ; beneath^ excepting the three basal joints, 

 dull piceous : nasus white : thorax with whitish hair : 

 wing-scale black : wings hyaline ; nervures fuscous : 

 tergum^ first segment, excepting at its tip^ hairy like the 

 thorax ; hands white, not much dilated ; second segment 

 with one at base and another behind the middle, confluent 

 each side ; remaining segments with a band on the middle 

 df each : tarsi towards their tips ferruginous. 



Length under seven twentieths of an inch. 



$ Body much more robust ; less hairy ; but the bands 

 of the tergum are rather wider, sometimes almost inter- 

 rupted in the middle ; hair of the posterior feet yellowish ; 

 antennse rather short ; nasus black, , 



Length nearly two fifths of an inch. 



A smaller species \h2J\ pruinosa and much like it; but 

 it may be distinguished by the much longer antennse of 

 the male, by the nasus being all white, and by the whitish 

 or almost uncolored hair of the head and thorax. 



When recent, the color of the eyes is light blue, with 

 three or four transverse^ movable series of longitudinal 

 dark spots. ^ 



Megatchile, Latr* 



M 



$ 



an tenor 



yellow. 



Inhab. Louisiana. 



Body not very hairy, black ; xvings with a shght full- 



