AMKRICAN HYMENOPTERA. 245 



The North American Cuckoo Wa!><ps of the Genus 

 PARNOVKS. 



BY HENRY L. YIERECK. 



In the preparation of this paper types of all species, except chry- 

 soprasiiia Smith, and falvicoriiis Cameron have been examined. 

 ■ For the loan of aijlaspidala and ivedcotti the writer is indebted to 

 Mr. A. L. xAIelander. 



KEY TO SPECIES. 



Postscutellum entire 1. 



Postscutellum notched 2. 



1. Greenish, tinged with blue, sometimes blue, sometimes tinged with copper; 



terminal segment more triangular. In the % there is a punctured 

 suture between the pronotum and mesonotum ; 10 mm. or less. 



edwardsii. 



Blue, tinged with green, terminal segment more quadrate. In the % there is 

 a broad granular suture between the pronotum and mesonotum ; 10 to 

 12.5 mm ha||;eui. 



Eoyal blue ; 8-9 mm heushawi. 



2. Apical segment of abdomen with a median carina, terminating anteriorly in 



a narrow smooth space posteriorly separating the two suhapical 



grooves 3. 



No median carina on apical segment 4. 



3. Blue and green ; tegulse entirely blue and green aglaspidula. 



Cupreous and green, tegulsB with a narrow yellow margin concinna. 



Blue and green and cupreous, tegula sienna, with a yellow margin, festiva. 



4. Tegulfe yellow 5. 



Tegulte dark 6. 



5. Cupreous, with green reflections diadenia. 



Green, with cupreous reflections westcottii. 



6. Tegulae black, with a pale margin chrysoprasina. 



TeguliB largely yellow, dark on disc 7. 



7. Small species, with distinct silvery bands of pubescence ta^niata. 



Large species, with no silvery bands 8. 



8. Process of postscutellum quadrate, with a short narrow notch, process not dis- 



tinctly elevated excurvata. 



The size (9 mm.), fulvous postscutellum and bluish abdomen of 

 fulvicornis are sufficient indications that this species is distinct from 

 any other North American form, 



Parnopes edward!>«ii Cress. 



June 27, 1882, Camp Umatilla, Washington (Henshaw). A 

 male and female, deep blue. 



TRANS. AM. ENT. SOC. XXX. AUGUST. 1904. 



