MONOGRAPH OF THE NOKTH AMERICAN PROCTOTRYPID.E. 441 



MONELATA FOrster. 

 Hyui. Stud., 11, p. 123 (1856). 

 Cori/nojn-in, Hal. Nat. Hist. Rev., i\, p. 170 (1857). 



(Type Diapria parntla Nees.) 



Head rounded, slightly wider tliaii tlie tliorax, with a slight frontal im- 

 pression, the ooeipnt vslightly eiiuuginated and rounded; eheeks imbes- 

 cent; ocelli 3, small, placed in a triangle anteriorly; eyes rounded. 



Antennaj inserted on a slight frontal ledge, in 9 13-jointed, clavate, 

 the last joint, which constitutes the club, being abnormally enlarged, 

 several times larger than the preceding; scape cylindrical, reaching 

 considerably beyond the ocelli; pedicel large, a little elongate, much 

 stouter than the funiclar joints, and as long as the first two or three 

 together; in $ 13-jointed, filiform. 



Maxillary palpi 5-jointed. 



Mandibles bifid. 



Thorax ovoid, the prothorax visible from above as a transverse woolly 

 line; mesosotum a little longer than wide at base, smooth, without 

 furrows ; scutellum subconvex without a trace of a fovea at base and 

 at the most separated from the mesonotum by a faint transverse line; 

 metathorax emarginated posteriorly, sparsely woolly, the angles more 

 or less acute. 



Front wings pubescent, strongly ciliated, the costal cell scarcely dis- 

 tinct, the submarginal vein reaching the costa a little before half the 

 length of the wing, marginal vein i^unctiform, the basal vein wanting. 



Abdomen oblong-oval, subtruncate posteriorly, the petiole short, 

 woolly, strigose, the second segment very large, without a basal sulcus, 

 beneath at base woolly, the following segments all very short. 



Legs moderate, pubescent, the femora clavate, the tibia3 subclavate, 

 the tibial sijurs not very prominent, hind tarsi as long as their tibise, 

 slender, basal joint much longer than the second. 



This genus could only be confused with Pluvnopria, but the enor- 

 mously enlarged terminal antennal joint in the feniale and the 13-jointed 

 autenme in both sexes sufficiently differentiate the two. 



Three species are known in Eu^jppe, while but two species have been 

 discovered in our fauna, which may be thus distinguished. 

 Black; antennse, except tlie large termiual joint, rufous or yellow. 



Legs yellow. 



Collar and mesoplenra piceons or pale; aiitenn;e yellow. 



M. MELLicOLLis Ashm. 

 Collar and mesopleura black; auteuure rufous M. hirticollis Ashm. 



Monelata mellicollis Ashm. 

 (PI. xviii, Fig. 6, 9 ; a, ^ autenna.) 



Cau. Ent., xix, p. 197. 



9. Length, 1""'". Polished black; antennoB, except the abnormaDy 

 enlarged terminal joint, collar, and legs, honey-yellow; mesopleura, 



