364 BULLETIN 45, UxVITED STATES NATIONAL MUSEUM. 



the first fiagellar joint tluice as long as tlie pedicel, the joints beyond 

 to the ninth gradually shortened, joints tenth to thirteenth about 

 equal, a little longer than thick; in 5 14-jointed, filiform, the first flag- 

 ellar joint excised at base, about two-thirds as long as the scape, all 

 the joints beyond long, cylindric, subequal. IMetathorax short, abrupt, 

 and keeled, the posterior angles subacute. Wings hyaline, the mar- 

 ginal cell scarcely twice as long as the marginal vein, the stigmal 

 slightly shorter than the marginal. Abdomen ovate, depresscMl, the 

 l^etiole slightly more than twice as long as the metathorax, in $ fluted, 

 in 9 with a short striate sculptnie but not distinctly fluted or grooved. 



Habitat. — Texas. 



Types in Coll. Ashmcad. 



Described from two specimens. 



ZELOTYPA Forster. 

 Hyiu. Stud., II, p. 130 (1856). 



Head transverse, the ocelli in a triangle, the eyes oblong-oval, pu- 

 bescent. 



Antenna^ inserted on a frontal prominence, in 9 15-jointed, filiform, 

 cylindrical, the last joint enlarged, fusiform, the scape long, slender, 

 extending far above the ocelli; in $ 14-jointed, the scape extending 

 scarcely beyond the ocelli, the first flagellar joint about two-thirds the 

 length of the scape, excised at base. 



Mandibles meeting at tii)s, bifid. 



Thorax snbovoid, the anterior angles of pronotum straight; meso- 

 notum with 2 furrows; scutellum convex, with a deep fovea at base; 

 metathorax carinated, the posterior angles not prominent. 



Front wings with a basal and a closed marginal cell, the latter large, 

 much larger than the marginal vein, the marginal vein being usually 

 shorter than half the length of the marginal cell; stigmal or first 

 abscissa of radius straight, at a right angle with the margin. 



Abdomen ovate-, the petiole not or scarcely longer than the metano- 

 tum, strongly fluted or striated. 



Legs rather long, pubescent; the ^interior tibia- clavate, their tarsi 

 twice as long as the tibi;e; middle and hind tibite long, slender, very 

 little shorter than their taisi; basal joint of hind tarsi abcmt 3 times 

 as long as the second; tibial spurs short. 



The tyj)e of this genus has never l)cen described. Our species may 

 be thus tabulated : 



TABLE OF SPECIES. 



MALES. 



AntenniP rnfons 3 



Antenna' blackisli or fuscous, i\u\ three or four basal joints pale rufous. 



Marginal vein shorter than the marginal c^ell and less than twice as long as the 



lirst branch of radius 2 



Marginal vein as long as the marginal <'ell, or 2.} times as long as the lirst br.Tuch 

 of radius. 

 Legs reddish-yellow Z. tkxaxa, sp. nov. 



J 



