1869.] 273 [Cresson. 



annulus at base of four posterior tibias, lemon-yellow; antenna3 short, 

 ferruginous, brownish above; thorax robust, deeply and coarsely 

 punctured; scutellum shining and sparsely punctured; metathorax 

 clothed with short, hoary pile, truncate and subexcavate behind, the 

 base longitudinally striated; wings hyaline, iridescent; abdomen 

 ovate, convex, polished, the first segment with a few large scattered 

 punctures, the two basal segments with a short, lateral, apical fascia 

 of white pubescence. Length three lines. 



S more slender; the face beneath antennse, labrum, mandibles, and 

 scape in front, yellow; antennse long, fulvous beneath; tarsi more or 

 less yellowish; first segment of abdomen with large, deep pits, the 

 second with numerous smaller punctures; apex of second and the re- 

 maining segments entirely smooth. Length two and one half lines. 



Ilab. Orizaba, Mexico. Prof F. Sumichrast. (Coll. Am. Eut. 

 Soc.) — ' 



11. P. grossa, n. sp. S. Deep black; head closely and finely^ 

 pvmctured; anterior orbits, jiointed above and dilated beneath an- 

 tennaj, clypeus, spot above, dot on tegulaj, spot on tubercles, inter- 

 rupted band on scutellum, anterior tibiaj in front, and posterior pair 



at base, white; antenna? moderately long, brownish-testaceous be- 

 neath ; thorax and two basal segments of abdomen deeply and grossly 

 punctured, confluently so on abdomen; metathorax truncate behind, 

 the base above with a few well-defined,'longitudinal carinse ; wings 

 hyaline, iridescent, a fuliginous costal streak extending from stigma 

 to apex of wing; first and second segments of abdomen with a nar- 

 row, entire apical fascia of white pubescence. Length thi'ee lines. 



Hab. Orizaba, Mexico. Prof F. Sumiclirast. (Coll. Am. Ent. / 

 Soc.) 



12. P. limbifrons, n. sp. $. Black, opaque, abdomen smooth^X 

 and shining; lateral margin of face, an interrupted line on prothorax, 

 tubercles, dot on tegulte and base of tibia3 more or less cream-color; 

 head and thorax densely and finely punctured ; metathorax rugose at 

 base, abruptly truncate behind; wings fusco-hyaline, subiridescent, 

 both recurrent nervures unite with those of the second submarginal 

 cell ; on each side of first segment of abdomen a short apical line of 

 silvery-white pubescence. Length three and one fourth lines. / 



Hab. Cuba. (Coll. Dr. J. Gundlach, No. 223.) -^ 



§§§• Species not recognized. 



P. elliptica Kirby, Faun. Bor. Am., iv, p. 266. Hudson's Bay. 

 P. eonfluens Smith, Brit. Mus. Cat. Hym.,i,p. 24. East Florida. 



PROCEEDINGS B. S. N. H.— VOL. XII. 18 APKIL, 1869. 



