1865.] 



287 



edge of the second, most of the third, and all of the remaining seg- 

 ments, shining black ; ovipositor as long as the first segment of the 

 abdomen, rufous, valves black. 



One specimen. This may be a distinct species, as the punctures of 

 thorax are closer and more distinct, and the hind legs seem to be 

 shorter and more robust. 



Genus PORIZON. Grav. 



1. Porizon fuscipennis, n. sp. 



Black ; orbits, mandibles, tegulse, venter and spots on apical segments of ab- 

 domen above, yellow; legs and apex of abdomen, rufous; wings fuscous; ovi- 

 positor long. 



Female. — Black, shining, finely pubescent, head delicately punc- 

 tured; clypeus rufo-piceous ; mandibles large, projecting, of equal 

 breadth, and when closed together there is left a large semicircular open- 

 ing between them and the clypeus, tinged with ferruginous, their tips 

 black ; palpi yellowish ; antennas about as long as the head and tho- 

 rax, rather slender and entirely piceous-black. Thorax black, shining, 

 closely punctured ; anterior middle of the mesothorax flatly elevated ; 

 scutellum prominent, flattened, with a sharp carina on each side and a 

 deep excavation in front; metathorax' densely punctured, with sharply 

 defined elevated lines, forming a small, distinct, elongate, 5-angular 

 central area, the apex rather abrupt and transversely striated; tegulaa 

 yellow. Wings ample, short and broad, uniform dark fuscous ; ner- 

 vures black. Legs ferruginous, the two anterior pairs yellowish in 

 front, the coxte and most of the posterior tibiae, fuscous; all the tarsi 

 yellowish. Abdomen ferruginous, the two basal segments, except ex- 

 treme tips, blackish ; the remaining segments with most of their apical 

 margins yellowish, much dilated in the middle, sometimes this yellow- 

 ish color is obscure and somewhat dusky ; venter entirely yellowish ; 

 apical segment above much swollen at tip ; ovipositor as long as the 

 abdomen, blackish. Length 5 lines; expanse of wings 1\ lines. 



Two specimens. Easily distinguished by the broad dark fuscous 

 wings. 



2. Porizon albipennis. n. sp. 



Black; orbits, two spots on clypeus, mandibles, tegulse, legs in part, the ven- 

 ter and apical margins of dorsal segments of abdomen, pale yellowish ; most of 

 legs pale ferruginous; wings whitish-hyaline: stigma blackish. 



Female. — Black; orbits, abbreviated in front, anterior margin or 

 two spots on clypeus, and the mandibles, yellowish-white; antenna? 

 two-thirds the length of the body, piceous-black. Thorax closely and 

 very finely punctured ; the elevated lines on the metathorax sharply 

 defined, the central area large, elongate, irregular 5-angular; tegulae 



