MONOGRAPH OF THE NORTH AMERICAN PKOCTOTRYPID^. 333 



Miiudibk'S conical. 



Maxillary palpi 4-jointed, long, tlie third joint the longest, the second 

 dilated. 



Thorax long, the prothorax rounded before, the mesonotuui with 

 two deep furrows, the metathorax areolated. 



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



Abdomen much as in Froctotrypes, the cauda usually shorter and 

 more slender. 



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



Distinguished from Proctotrypcs by the distinct mesonotal furrows, 

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

 stigma. 



The genus is unknown, as yet, out of the European fauna. 



PROCTOTRYPES Latr. 



Pri^c, p. 108 (1796); Forster, Hyin. Stud., ii, ii. 99; =? <S'erj>/u.s Sclirauk, Sclirift. d. 

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



(Type P. (jravidator Liun.) 



Head transverse or quadrate, the occiput margined; ocelli 3, j>romi- 

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



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

 ring-joint; the scai^e 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 as having but 12-jointed 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 

 produced into a neck anteriorly; mesonotum 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 cox;e ; spiracles oval or linear. 



Fiout 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 $ 

 terminating in a long cauda; in $ ending in two prongs or si)ines. 



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

 tarsi long, slender; claws long, curved, simple. 



