1865.] 



65 



slightly obfuscated ; ovipositor very short, scarcely exserted. Length 

 41 lines; expanse of wings 10$ lines. 



Collection. — Ent. Soc. Philad. One specimen. 



Microdus stigmaterus, n. sp. 



Rufous: head and antennae black; wings fuscous, stigma yellow, with a hy- 

 aline patch beneath it, the base of the anterior wings subhyaline; basal segment 

 of abdomen striated; ovipositor longer than the body. 



Female. — Rufous, shining, thinly clothed with a fine whitish pube- 

 scence ; head transverse, black, face short, not prolonged, tinged with 

 piceous, as well as the mouth ; palpi pale ; antennae longer than the 

 head and thorax, rather stout, rufo-piceous. Thorax polished ; lobes 

 of the mesothorax prominent, indistinctly punctured ; pleura minutely 

 and closely punctured ; metathorax rugose, pubescent, with several in- 

 distinct longitudinal carina) ; tegulse rufous. Wings fuscous; base of 

 the anterior pair subhyaline ; stigma pale yellow, with a rather large 

 hyaline patch beneath it ; nervures fuscous. Legs stout, rufous ; the 

 four anterior femora, except tips, apex of the four posterior tibiae, and 

 most of the tarsi, more or less dusky ; posterior coxae large, their femora 

 thickened. Abdomen elongate, depressed above; basal segment except 

 tip, longitudinally striated ; second or third segments incised at base, 

 each with a broad, rather deep, transverse depression across the middle, 

 that on the second segment finely striated, remaining segments smooth 

 and polished ; extreme sides of the abdomen, from the base to the tip 

 of the second segment, carinated; venter prominent towards the tip and 

 subcompressed; ovipositor longer than the body, rufo-piceous. Length 

 5 lines ; expanse of wings 8 lines. 



Male. — Resembles the female, but is darker in color, and rather 

 larger, with the abdomen more robust. 



Collection. — Ent. Soc. Philad. Two 9 ) 01ie £ , specimens. 



Easily recognized by the conspicuous yellow stigma of the anterior 



Microdus varipes, n. sp. 



Rufous; antennse, four anterior legs, and posterior trochanters, tibiae and 

 tarsi, black; middle tarsi of "J,, white: wings fuscous; second abdominal seg- 

 ment incised at base. 



Female. — Rufous, polished; head transverse, face short; antenna) as 

 long as the body, piceous-black. Thorax smooth and polished ; lobes 

 of the mesothorax well defined, the central lobe with a broad longitu- 

 dinal groove on its middle; metathorax shining, with several ill-defined, 

 longitudinal carinas, its extreme sides smooth and polished; tegulae ru- 

 fous. Wings uniform dark fuscous, a slightly oblique hyaline streak 



