48 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. 



or I'DiiiKled in front; njesonotuni short, without furrows; stMitellum 

 witli a transverse furrow iit base; metathorax subquadrate, rounded 

 bcliind. 



Front winps with a very short subm.arginal vein, terminating in a 

 callous spot and a small stijrma; costal rell open; the stigmal vein and 

 basal eells wanting. The 5 is usually apterous without ocelli, although 

 sometimes winged with the venation as in the m-ile. 



Abdomen ovate or oval, subpetiolate, the second and third segments 

 large, about equal, the following short, the posterior apical margins of 

 the segments usually straight. 



Legs short, stout, the femora swollen, the anterior pair larger than 

 the others, tibial spurs, 1, 2, 2, claws simple. 



For many yetirs the true position of this genus was obscure. Prof. 

 Westwood in his original description stated jt was allied to Teleas, and 

 Forster, as late as 1856, in his Hyraenopterologische Studien, without 

 a personal acquaintance with it, incorporated it among the Diapriina'. 

 It has been fully elucidated since, however, and properly placed by 

 Westwood in the Iicthylin(v, details of which will be found in the Pro- 

 ceedings of the London Entomological Society for 1881, p. 125. 



The degraded type of venation and the absence of basal cells readily 

 distinguish tlie winged form from other genera in the group ; but with the 

 apterous forms it is quite diflferent, and great care must be taken to 

 examine the mouth parts for the characters laid down in the table, or 

 one is apt to confuse them with Scleroderma. 



Only three species a^e known in our fauna, which may be tabulated 

 as follows : 



Winged 2 



Wingless, without ocelli. 



Entirely brownish yellow or honey -yellow V. fiALLicoLA Ashm. 



Head, thorax, and legs rufo-testaceous, the collar anteriorly and the meta- 

 thorax waxy white. 



Abdomen black C cynipipiiila Ashui. 



2. Polished black ; legs piceous. 



Wings hyaline C. iiyalinipennis sp. nov. 



Rufo-testaceous, collar and base of abdomen yellowish. 

 Wings Hubbyaline C. nubilipennis Ashm. 



Cephalonomia gallicola Ashm. 



(PI. Ill, Fig. 6, 9.) 



Sclerochroa gallicola Ashm., Ent. Am., iir, p. 75, S ; Cress., Syn. Hym., p. 247. 



9 . — Length, 1.8™"*. Honey- yellow or pale brownish-yellow, smooth, 

 polished. Eyes small, round. Antennje 12-jointed, about as long as the 

 head ; scape one- third the length of the head; pedicel a little longer than 

 thick ; the flagellar joints all small, submoniliform. Abdomen pointed, 

 ovat*, a little longer than the head and thorax united ;^ the apical 

 margins of the second and third segments slightly emarginate. 



Habitat. — Jacksonville, Fla. 



Type ? in GoU, Ashmead. 



