76 THE CANADIAN ENTOMOLOGIST. 



the third at extreme base striated, the second segment 



without a transverse furrow ; g , antennas 22-jointed 



... C. pityophthori, sp. n. 



Ovipositor one-third the length of abdomen. 



Head smooth, polished ; collar, mesosternum, second abdo- 

 minal segment and the apex of abdomen, more or less, 

 yellow ; first segment, basal two-thirds of second, and base 

 of third and fourth, striated ; the second with two trans- 

 verse impressed lines ; antennae 25-jointed 



C. floridanus, sp. n. 



2. Ovipositor longer than the abdomen. 



Head black or piceous black, polished, impunctured ; scutellum 

 with two large fovea? at base ; metathorax with two large 

 areas at base, posteriorly rugose or reticulated ; antennae 



in $ 3 i-jointed C. atriceps, sp. n. 



Ovipositor two-thirds the length of abdomen. 

 Metathorax with two areas at base. 

 Head transversely aciculated. 



First abdominal segment and] basal two-thirds of 

 second striated ; rest of abdomen smooth, polish- 

 ed, the second segment with a transverse im- 

 pressed line ; antennae in $ and 9 25-jointed... 



C. hylotrupidis, sp. n. 



First abdominal segment, basal two-thirds of second, 

 and the bases of the third and fourth, striated, the 

 second with two transverse impressed lines ; 



antennae in £ 30-, in $ 25-jointed 



C. aciculatus, sp. n. 



Ovipositor less than half the length of the abdomen. 



Metathorax with a petiolate, diamond Q) shaped area. 



Head transversely aciculated ; first abdominal segment, the 

 second, except at apex, and base of third and fourth, 

 striated, the second with a transverse impressed line 

 at basal one-third and a transverse depression a little 

 beyond ; antennae in § 36-jointed . . C. prodoxi, Riley. 

 Metathorax rugose, reticulated, with two areas at base. 



Head smooth, polished; first abdominal segment, 



