MONOORAPH OF THE NORTH AMERICAN PROCTOTRYHI)^. 333 



Miindihh'H conical. 



Maxillary palpi 4 J<iintc<l, lonjr, the tlilrdjoint the longest, the Hecond 

 dilat4>d. 



Thorax lon^, the prothorax rounded before, the niesonotnm with 

 two deep furrowH, the nietathorax areolate«l. 



Front wings with an oblong stigma, the marginal cell rather large. 



Abdomen much as in ProctotrypeH, the cauda usually shorter and 

 more slentler. 



Legs as in Proctotrifpeg, except that the tibial spurs are smaller. 



Distinguished from Proctotrypex by the distinct mesonotal furrows, 

 the dilated second joint of the maxillary i)alpi, and the shape of the 

 stigma. 



The genus is uukuowD, as yet, out of the Euro|)ean launa. 



PROCTOTRYPES Latr. 



Pr^c, p. 108 (1796); Forster, Hym. Stud., ii, p. 99-,— 1 Serphus Schrank, Scbrift. d. 



Berl. Naturf. Fr., i (1780). 



(Type P. gravidator Linn.) 



Head transverse or quadrate, the occiput margined; ocelli 3, promi- 

 nent, in a triangle, rather close together; eyes ovate or long-oval. 



Antennje inserted on the front between the eyes, 13-jointed with a 

 ring-joint; the scape is short, oval; the pedicel very minute, annular, 

 more or less hidden within the scape and only visible as a ring-joint, 

 hence the genus has been described Jis having but 12-joint€d antenna?; 

 the flagellar joints vary from long cylindrical joints to short, or monil- 

 iform joints, and sometimes in the males some of the joints are dentate. 



Mandibles acute at tips, edentate. 



Maxillary palpi long, 4-jointed, the last joint linear; labial palpi 

 3-jointed, the last joint fusiform. 



Thorax elongate, the prothorax always visible, depressed above and 

 l)roduced into a neck anteriorly; mesouotum long, highly convex, 

 without furrows, scutellum convex, foveolated at base; metathorax 

 longer than high, sloping or obtusely rounded posteriorly and produced 

 beyond the insertion of the coxj« ; spiracles oval or linear. 



Fiont wings with a triangular stigma at about two-thirds the length 

 of the wing with a distinct but very short marginal cell, its length 

 rarely more than half the length of the stigma; costal cell closed; all 

 other cells and nervures entirely, or subobsoletely, obliterated; if 

 present indicated only by fuscous streaks. 



Abdomen petiolated, ovate, slightly compressed, the petiole short, 

 the second segment very large occupying most of its surface, in "the 9 

 terminating in a long cauda; in $ ending in two prongs or spines. 



Legs long, slender, the femora slightly swollen; tibial spurs 1, 2, 2; 

 taS-si long, slender; claws long, curved, simple. 



