300 Say^s Descriptions of 



TiPHiA, Fabr. Latr. 



T. tarda. Body polished, blacky punctured : mandi- 

 hies piceous in the middle : metathorax with three longi- 

 tudinal lines, and the minute lines on the margin of the 

 posterior declivity very regular and obvious : wings 

 tinged with honey-yellow ; nervures brown ; stigma 

 black : incisure of the first abdominal segment not very 

 much contracted; second segment at its basal margin 

 with the minute longitudinal hnes very regular and dis- 

 tinct : pal2>i dull piceous. 



Inhabits Indiana. 



Length about three tenths of an inch. 



The smallest species 1 have seen, and may be distin- 

 guished from its American congeners by its size. The 

 male has the metathoracic lineations more distinct. It is 

 smaller than the femorataj of Europe. 



Myzine, Latr. KIus:. 



1. M. hamatus. Black; thorax spotted and abdominal 

 segments margined with yellow ; the latter not abruptly 

 emarginate each side. 



Inhabits Indiana. 



i Body black, polished, with small punctures ; nasus, 

 labrum, tip of the basal joint of the antenna, two spots 

 between the antennae and base of the mandibles yellow : 

 collar on the anterior margin, interrupted in the middle 

 and on the posterior margin, yellow : thorax with a spot 

 m the middle emarginate before, yellow : metathorax, a 

 transverse yellow spot near the scutel and an obscure 

 yellow, longitudinal spot each side at tip : tergum with 

 a perlaceous iridescence ; on each segment a slender yel- 



