378 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.56. 



transverse cubitus barely a sixth as long as basal abscissa of radius 

 (in Hyhophanes it is fully a fourth as long) ; basal abscissa of radius 

 more than half as long as apical abscissa; abdomen subcompiessed at 

 apex, the apical segments retracted, first tergite much longer than 

 second, spiracles distinctly behind middle, lateral fovea far from 

 base, postpetiole and second tergite longitudinally rugulose, third 

 very weakly so; ovipositor as long as first tergite. 

 Type. — Mesoleptus ? nasutus Cresson. 



ZAGRYPHUS NASUTUS (Cresson). 



Mesoleptus ? nasuius Cresson, Trans. Amer. Ent. Soc, vol. 2, 1868, p. 103. Male 

 and female. 



This is the only described North American species. It is easily 

 recognized from the generic description and from the original descrip- 

 tion. 



There are two females and one male in the United States National 

 Museum collection — the females from Chain Bridge, Virginia (H. B. 

 Kirke), and Cabin John, Marjdand (R. M. Fonts), and the male from 



Lawrence, Kansas (Hugo Kahl), all de- 

 termined by the VvTiter and S. A. Rohwer. 

 These specimens are the basis of the ge- 

 neric description. 



Genus NELIOPISTHUS Thomson. 



Neliopisthiis Thomson, Opusc. Ent., fasc. 9, 

 1S83, pp. 907, 908. 

 Type. — Phytodietus elegans Paithe. 



Polysphhictomorpha Ashmead, Proc. U. S. Nat. 

 Mus., vol. 33, 1900, p. 59. 



I ro. 2.— ZAGRYPirUS nasutus (OeeS- rr, „, i-,7.7 -Ai 



.SON), a. FEMALE. LATERAL VIEW OF TypB. -Polysphmctomovpha luggen Ash- 



IIEAU. (e. = EPOMLA.) 6. MALE. FRONT mead MS. 



VIEW OF CLYPEUS. C. KIIEATH OF nyr • P ,^ i 11 



OVIPOSITOR. LATERAL VIEW. ^ o specimeu of the genotype has been 



available for study, but that the three 

 species described below belong here there is no doubt, especially since 

 one of them differs in very little from Schmiedeknecht's description 

 of the genotype and may even be that species. 



Judging from the tliree species studied Schm.iedeknecht's descrip- 

 tion of the genus ^ will need a few alterations. The areolation of the 

 propodeum is subject to considerable variation: The areola varies 

 from twice as long as broad and pentagonal (Schmiedeknecht) to as 

 broad as long and hexagonal; the petiolar area is sometimes nearly 

 half as long as the propodeum and sometimes much shorter. That 

 portion of the cubitus lying between the intercubitus and the second 

 recurrent is not always longer than the intercubitus. These and the 

 comparative length and breadth of the tergites are specific charac- 

 ters. The white markings of the head and thorax are apparently of 

 generic significance. 



» Opusc. Ichn., fasc, 32, p. 2506. 



