MONOGRAPH OF THE MOIiTH AMERICAN PBOCTOTRYPIDiE. 429 



Abdomen oblong oval, with a very short, thick, woolly petiole, the 

 second segment very large, occupying more than two-thirds its whole 

 surface, the following segments very short. 



Legs clavate, pilose, the basal joint of j)osterior tarsi about twice as 

 long as the second. 



Very closely allied to Loxotropa Fiirster, but the absence of the basal 

 nervure at once separates it. 



The following table will aid in determining the species: , . 



TABLE OF SPECIES. . -\ 



Sciitellnm with a single fovea at base, liead globose 3 



Seutellum with an arcuate impressed line at base, bead oblong 2 



Scutellum with two small foveiB at base, head oblotig. 

 Club abrupt, 3-jointed, black, the joints nearly e([ual. 



Antenuai and legs yellow C . longiceps, sp. nor. 



Club not 80 abrupt, 3-jointed, black, the last joint very large, about as long as 

 the two preceding togethei'. 

 AntenuiB wholly black, or piceous- black, legs yellow. i 



C. MEGAPLASTA, sp. nOV. 



Antennae and legs yellow C. kifoveolata, ep. nov. 



2. Club abrupt, 3-jointed, black, the tirst joint not half the length of the second, the 



third one-third larger than the second ; rest of antennt^ and legs 

 yellow C. PU8ILLA, sp.nov. 



3. Club 3-jointed, incrassated. 



Antennte piceous or black, legs rufous, coxaj and the swollen portion of the 



femora and tibiae piceous. 

 Last joint of club not much larger than the penultimate ; first funiclar joint 



thrice as long as thick C. infuscatipes, sp. nov. 



Last joint of club greatly enlarged, as large as the two preceding united; 



first funiclar joint twice as long as thick C. flouidana AsIuu. 



Ceratopria longiceps, sp. nov. 



9 . Length, 1.4""". Polished black, impunctured ; cheeks behind, 

 collar and metathorax pubescent; antennte, except club, and the legs 

 yellow. Head oblong, a little longer than wide, with some sparse long 

 hairs. Antenuse 12 jointed, ending in an abrupt 3-jointed club ; pedicel 

 longer than the first and second funiclar joints united and much stouter; 

 funiclar joints 2 to 5 not longer than thick; joints 6 and 7 transverse; 

 club 3-jointed, black, the first and second joints quadrate, distinctly 

 separated, the third or last oval, closely joined to the second. Scutel- 

 lum flat, triangular, with two small shallow fovea? at base. Meta- 

 thorax tricarinate, the surface channeled between the carina;, pubes- 

 cent. Wings clear hyaline, fringed, but the fringe short; stigma yel- 

 lowish. Abdomen oblong oval, polished black, the petiole stout, as 

 wide as long. 



The (? differs in having 14-jointed, filiform-moniliform antenme, the 

 first flagellar joint being only two thirds as long as the second, the sec- 

 ond being the loudest aud the stoutest joint and slightly curved; the 



