364 BULLETIN to, UNITED STATES NATIONAL MUSEUM. 



the first Hagellar joint thrice as long as the pedicel, the joints beyond 

 to the nintli gradually shortened, joints tenth to thirteenth about 

 equal, a little longer than thick; in <? 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. INIetathorax 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, depressed, the 

 petiole slightly more thau twice as long as the metathorax, in i fluted, 

 in 5 with a short striate sculpture but not distinctly fluted or grooved. 



Hauitat. — Texas. 



Types in Coll. Aslnnead. 



Described from two specimens. 



ZELOTTPA F<irster. 

 Hym. Stml., ii, p. 130 (1856). 



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

 bescent. 



Antennae inserted on a frontal proit'.inence, in 9 15-jointed, filiform, 

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

 extending far above the ocelli; in 3 14-jointed, the scape extending 

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

 length of the scape, excised at ba^se. 



Mandibles meeting at tips, bifid. 



Thorax subovoid, 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 thau 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 <)r scarcely longer thau the metano- 

 tum, strongly fluted or striated. 



Legs rather long, pubescent; the anterior tibia* davate, their tarsi 

 twice as long as the tibia*; middle aiiil hind tibia' long, slender, very 

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

 as long as the second; tibial spurs short. 



The type of this genus has never been d«'scribed. Our species may 

 be thus tabulated : 



TABLE OF SPECIES. 



MALES. 



Antenna' rnfoiis 3 



AntenniP blnckiHli or fuHcons, the three or four hawal joints pale rufous. 



Marginal vein nhorti-r than the nuirginal cell and less than twiee as long as the 



lirst ))rau('li of radius 2 



Marginal vein as long as the marginal ctll or 2^ times a« long as the first branch 

 «)f radius. 

 Legs reddish-yel'ow Z. tkxana, sp. nov. 



