North American Hu 



397 



'/ 



/' 



tergu 



low ; the former having a black spot on the anterior middle 

 of the posterior pairs. 



Length three tenths of an inch. 



A very abundant species. The male is a little longer 



than the female. 



The scutelliform base of the metathorax is more or 

 less sculptured with slightly elevated, longitudinal lines. 



6. H. paralUlus. Black; tergum banded ; wings and 



feet ferruginous. 

 Inhab. Indiana. 



h . 



9 Body black, somewhat hairy ; hairs yellow-cinere- 



ous 



over the labrum : antenn<B with the third joint but little 

 longer than the fourth : wings pale ferruginous, dusky at 

 tip ; second cubital cell quadrate, the basal and terminal 

 nervures being quite parallel : tergum^ each segment with 

 a very obvious posterior margin of whitish-yellow hairs : 

 feet ferruginous, the base of the thighs and coxse more of 

 less blackish. 



Length less than half an inch. 



^ 





Ceratina, Latr 



C. dupla. Blue ; much punctured. 



Inhab. Indiana. 



9 Body deep blue, densely punctured, a little polish- 

 ed : antenna black : nasus with a white spot, sometimes 

 obsolete : thorax with an impressed line ; disk with few 

 punctures and more polished : wings but slightly dusky ; 

 nervures blackish : wing-scale dark piceous, impunctured : 



