4 2 HYMENOPTEEA OF AMERICA. [PART T. 



petioli margo flavo-notatus ; alse secundum venas infuscatse. Longit, 



0.011. 



Zethus parvulus Saoss. Vespides, III, 119, 5, pi. ii, fig. 1, ? ,' 1S54. 



Hab. Brazil. South of the Province of Goyaz. (Collected 

 by iln' savant botanist Auguste de St. HilaJre.) 



This species approaches to the form of Z. Montezuma; but it 

 is much less coarsely punctured, smaller, and very clearly recog- 

 nizable by the arcuate ridge of the post-scutel, which in com- 

 tinuation of the carina? of the metathorax, forms a prominent 

 -hoe. 



y. Petiole quite linear, filiform, depressed, very much elongate, as in Eumenes 

 of Division £. The, appearance of a Calligaster. 



31. Z. strigOSUS n. sp. — Niger, fulvo-sericeus, parnm flavo-ornatum ; 

 pro- el mesonoto valdi oblique strigatis,; metanoto rugoso; petiol.o lineari ; 

 20 segmento basi breviter pedunculato; pedibus nigris, tlavescenti- 

 pilosis; alis subbyalinis. 



9- Total length, 14 ram. ; wing, 11 mm. 



£ . Total length, 12 mm. ; wing, 8j mm. 



?. Slender. Head strigate-punctured. Prothorax sharply 

 margined, angular on each side, but not spined, obliquely strigose. 

 The whole disk of mesothorax strongly obliquely strigose and 

 wrinkled; the striae converging against the middle carina. 

 ellum shining punctate, a little sulcate in middle, as the post- 

 scutellum. Metathorax rugose, velutinous, wrinkled on each 

 side, at base parted by a channel ; the lateral canthi earinated 

 on the sides. Petiole very long and slender, not globulously 

 swollen, but quite linear (as in Eumenes of Division Zeta) flat- 

 tened, shining, and parted by an impressed line, punctate on the 

 Collar of the 2d segment distinct; the hinder margin of 

 this segment very slightly reflexed. 



Black, furnished with a yellowish-silky, or rather golden 

 pubescence; the metathorax and pleura with cinereous pubescence. 

 A line on the base of the inner margin of mandible, a line on the 

 scape, two dots on the front, a very narrow line on both margins 

 of prothorax, the post-tegulae, angles of post-scutellum, and two 



1 The male of this species is not known. It is possible that it should 

 be pla< i m d. 



