64 EDAVARD NORTON. 



Tabic to assist in finding the North American species. 



A. Color wholly l)lac"k or blue blue-black 1. McLeayi- 



B. Head black 2, coeruleus. 



a. Thorax black. 



1. Abdomen jiartly black .'1. analis. 



4. virescens. 

 0, clavicornis. 



2. Abdomen red or yellow <'•, abdominalis. 



b. Thorax partly black. 



1. Abdomen black T. scapularis. 



s. dorsalis. 



2. Abdomen partly black !t, humeralis. 



10. procera. 

 1 i. poecila. 



12, fascialis. 



13, semifuscus. 



3. Abdomen red U, pectoralis. 



1;'). dulciaria. 

 16, miniata. 

 C. Head rufous. 



a. Thorax black. 



1. Abdomen partly black 17, lepida. 



2. Abdomen red or yellow IS, coccinea. 



]9, rubra. 



b. Thorax rufou?:. 



]. Abdomen red or yellow 20, rubiginosa. 



1. H- McLeayi. 



Hylotonm McLeayi, Loach. Zool. Misc. Ill, 1817, 122, 3, 9. 

 Lepel., Monogr. 45, 129. 

 Norton, Proc. Ent. Soe. Ill, .'), 2. 



9 . Antennae black, at base and tip piceous; head, thorax and al)- 

 donien subaneous or blue-black 5 mandibles and palpi piceous; cox;\), 

 femora and tips of posterior tibiae black ; knees, tibiae and tarsi yellow- 

 ish fuscous, apical tarsi blackish ; wings smoky hyaline, stigma black- 

 ish, costa yellowish, a round fuscous spot beneath stigma. 



Var. 9 . The fuscous spot below stigma prolonged, curving across 

 X\\(i wing. Illinois, (B. D. Walsh). 



% . The male has the tips of tibi:v; almost wholly pale. The fuscous 

 spot below the stigma slightly flattened before. Insect smooth, shin- 

 ing, on the head and sides a fine whitish pile. 



Georgia, (Leach) ; New England, New York, Pennsylvania. A'irgi- 

 nia, Illinois, English Kiver, Hudson's Bay Territory, (Smithsonian In- 

 stitute). 



Leach calls the wings "sub-fuscous, at apex hyaline," but the wings 

 of most of those exan)ined are clear hyaline, a little smoky, the apex 

 not more clear than the middle. The second recurrent uervure touches 



