2 PEOCEBDINGS OF THE NATIONAL MUSEUM vol.72 



wing from the pterostigma. Propodeum black, surface strongly 

 rugose, the raised lines running longitudinally and not being con- 

 nected with transverse ridges; with same type of pubescence as on 

 thorax. Abdomen smooth, black, with testaceous markings on each 

 side of the segments, 



Tyfe locality. — Chapada, South America. Paratype from San- 

 tarem. South America. 



Described from two specimens collected in April. 



Type. — Cat. No. 40182, U.S.N.M. Paratype in writer's collection. 



LESTODKYINUS STRIATUS. new species 

 Fig. 1 



The antennae are missing from this specimen, but otherwise it 

 answers the description of Lestodryirms. The species is nearest 

 Lestodryinus tarraconensis (T. A. Marsh). 



Female. — Length 6 mm. Color black, except legs, which are fus- 

 cous to testaceous. Head black on vertex, testaceous ventrall}'^, 

 broader than long (20 : 9) ; vertex moderately and broadly concave, 

 surface with more or less irregularly longitudinal striations appearing 

 rugulose ; lateral ocelli closer together than to the anterior one ; head 

 not produced beyond the eyes; occiput truncate; antennae missing. 

 Entire thorax more or less pubescent ; prothorax shining with numer- 

 ous fine striations, which are more or less transverse on the disk, becom- 

 ing longitudinal on the sides ; lower sides smooth and shining without 

 visible sculpturing; mesoscutum with distinct deeply impressed 

 longitudinal striations, which almost conceal the parapsidal furrows, 

 these are only slightly convergent and extend to margin; scutellum 

 very similar in surface sculpture to mesoscutum except that the stria- 

 tions are more irregular ; postscutellum with jRnely granulated surface 

 partly concealed by white pilosity; legs testaceous to ferruginous, 

 anterior femora, tibiae and tarsi more or less fuscous, middle and 

 hind legs lighter, but with fuscous markings ; chela as in Figure 1 ; 

 wings similar in venation to Lestodryinus dicJirous but darker in 

 color, being smoky, with a lighter band extending transversely 

 across the fore wing from the pterostigma. Surface of propodeum 

 with a coarse reticulated sculpturing on the disk and sides, and with 

 a microscopic white pubescence. 



Type locality. — Santarem, South America. 



Described from one specimen. 



Type.— C^i. No. 40183, U.S.N.M. 



PSILODRYINUS GRACILIS, new species 

 Fig. 15 



F emale.—ljengih. 3.7 mm. General color black. Head black, 

 wider than long (10:6) ; vertex very slightly concave, surface dull 



