400 BULLETIN 15, UNITED STATES NATIONAL MUSEUM. 



Antenna? 13-jointed in both sexes, inserted on a slight frontal promi- 

 nence; in 9 incrassated toward tips, submoniliform; in (5 , long fili- 

 form, the joints long, cylindrical, pilose. 



Maxillary i>alpi 4-Joiiited. 



Thorax subovoid, the raesonotnm broader than long, without furrows, 

 the scutellun subconvex with grooved lines at the sides and a fovea 

 across the base, the metauotum very short, the posterior face carinated 

 above. 



Front wings i)ubescent, ciliated, the submarginal nervure reaching 

 the costa just before its middle, marginal vein punctiform, stigmal 

 vein distinct, oblique, two or more times longer than the marginal 

 nervure; basal nervure Avanting the ijostmarginal uervure distinct. 



Abdomen oblong-oval, petiolated, the second segment very long, with 

 sulci at base. 



Legs clavate. 



Distinguished from Hemihxis in having no mesonotal furrows and 

 no basal nervure; also by the ditference in the male anteuuie, all the 

 flagellar joints being long and cylindrical, pilose. • 



Hemilexodes floridana, sp. nov. 

 (PLxvi,Fig.8,9.) 

 9 . Length, 1.5'""'. Entirely honey-yellow, except the head, which is 

 brownish. Antenn;e 13-joiuted, the flagellar joints, after the fourth, 

 round-moniliform. Thorax without furrows; scutellum with a trans- 

 verse fovea at base; metathorax carinated. Wings hyaline, strongly 

 fringed, entire, the nervures pale yellow, the stigmal vein long, oblique, 

 more than 3 times as long as the short marginal. Abdomen oblong 

 oval, truncate at tip, smooth, polished, the petiole 1^ times as long as 

 thick with raised lines toward the sides. 

 Habitat. — Jacksonville, Fla. 

 Types in Coll. Ashmead. 

 Other si^ecies in this genus are known to me from the West Indies. 



SYNACRA Forster. 



Hyni. Stud., 11, p. 128 (1856). 



('hlUlonia H. Scli., Forts. Faun. lus. Germ. CI. vii. 

 Artiholus Hal., Nat. Hist. Eev., iv, p. 173 (1857). 



(Tyiio Dlupria brachiolis Nees). 



Head subgiobose, the cheeks rounded, the occiput scarcely margined; 

 ocelli 3, triangularly arranged, rather close together on the crown; eyes 

 oval. 



Antenna^ inserted on a frontal prominence; in 9 12-jointed, termina- 

 ting in a 5-jointed club; in S 14-jointed, filiform, the flagellar joints 

 long, cylindrical, pih)se, the first excised. 



Mandibles subrostriform, bidcntate at tips. 



Thorax ovate, the mesonotum with 2 distinct furrows, the scutellum 

 convex, with a fovea at base; metathorax smooth. 



