402 PROCEEDINGS OF THE ACADEMY OF [June,. 



C. — Ovipositor with dorsal margin of apex obliquely subtruncate,. 



armed with teeth (Subgenus AUonemohius).. 



D. — Ovipositor with dorsal margin of apex armed with not 



very sharp teeth. 



E. — Ovipositor distinctly longer than caudal femur (in 



occasional specimens this character does not hold). 



F. — Size large to small for genus. Apex of ovipositor 



narrowly sublanceolate, enlarged portion longer. 



Coloration rusty black to dusky brown, rather 



immaculate, occiput obscurely striped 



fasciatus (De Geer). 

 FF. — Size medium to small for the genus. Apex of 

 ovipositor sublanceolate, enlarged portion shorter. 

 Coloration very dark, occipital stripes indistin- 

 guishable .fasciatus abortivus Caudell. 



EE. — Ovipositor as long as or shorter than caudal femur,, 

 (in occasional specimens this character does not 



hold). Coloration as in fasciatus 



fasciatus socius Scudder. 



DD.— Ovipositor with dorsal margin of apex armed with very 



sharp teeth. 



E. — Size medium, form robust. Ovipositor as long as 



caudal femur, this length constant. 



F. — Ovipositor with rather heavy sublanceolate apex 



armed with rather heavy teeth. Coloration dark 



brown maculate with piceous, pale yellowish line 



about eyes excepting on infra-ocular portion of 



the gense, no other striking markings on head 



maculatus Blatchley. 

 FF. — Ovipositor with similar but somewhat shorter apex 

 armed with somewhat heavier serrations. Colora- 

 tion dark brown, somewhat maculate with a 

 darker shade, head very strikingly and character- 

 istically marked ambitiosus Scudder. 



EE. — Size somewhat smaller, form more slender. Ovipositor 



extremely variable in length. (Coloration of head 



below antennae strikingly piceous, occiput obscurely 



striped.) 



F. — Ovipositor usually much longer than caudal femur. 



Coloration light to dark brown with a grayish 



suffusion griseus E. M. Walker. 



FF. — Ovipositor shorter than caudal femur. Coloration 



very dark brown with a grayish suffusion 



griseus funeralis Hart. 



CC. — Ovipositor with dorsal margin of apex straight, armed with 



closely spaced serrulations. 



D. — Pronotum with length considerably more than half the 



width. Ovipositor considerably shorter than caudal 



