358 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxh. 



19. TETRACLADIA Hovs^ard. 



1892. leiracladia Howard, Proc. U. S. Nat. Mus., XV, p. 367. 

 (Type, Tetracladia texana Howard.) 



1. TETRACLADIA GRACILIS Howard. 



Tetracladia gracilis Howard, Proc. U. S. Nat. Mus., XV, 1892, p. 368, male. — Dalla 

 Torre, Cat. Hym., V, 1898, p. 230. 



Type.— Cat. 'Mo. 1486, U.S.KM. ( Ashmead collection.) 

 Habitat. — Florida. 



2. TETRACLADIA TEXANA Howard. 



Tetracladia texana Howard, Proc. U. S. Nat. Mus., XV, 1892, p. 367, male. — Dalla 

 Torre, Cat. Hym., V, p. 230. 



Tyije.—Q^t. No. 1485, IJ.S.N.M. 

 Habitat. — Texas. 



20. TETRACNEMOPSIS Ashraead, new genus. 

 (Type, Tetracnemus westwoodii Cockerell.) 



Differs from Tetracnemus Westwood in having the marginal vein fully 

 twice as long as thick, about half the length of the stigmal, the post- 

 marginal vein developed, the pronotum transverse linear, the scutellum 

 longer than the mesonotum, while the axillae meet just iu front of the 

 scutellum. 



Tlie female, which was unknown to Cockerell, has the head, seen from 

 in front, longer than wide, the eyes large, the face and forehead nar- 

 rowed; the antennae are 11 -jointed, inserted close to the clypeus with a 

 distinct carina between, the scai)e obclavate, the flagellum clavate, the 

 club enlarged, ovate, thrice as thick as the funicle; while the hypopyg- 

 ium is prominent, plowshare shaped, and projects considerably beyond 

 the tip of abdomen. 



The pedicel and first four joints of funicle are white, the scape, last 

 two joints of funicle and the club, dark brown. 



I. TETRACNEMOPSIS WESTWOODII Cockerell. 



Tetracnemus westwoodii Cockerell, Can. Ent., XXX, 1898, p. 224, male. 

 Cotype (male).— Oat. No. 4847, U.S.N.M. 

 Type (female).— Cat. No. 4732, U.S.N.M. 

 ^aZ>itot— Colorado: Fort Collins. (C. P. Gillette.) 



21. PENTACNEMUS Howard. 



1892. Pentacnemus Howard, Proc. U. S. Nat. Mus., XV, p. 366. 



(Type, Pentacnemus hucculatricis Howard.) 



I. PENTACNEMUS BUCCULATRICIS Howard. 



Pentacnemus hucculatricis Howard, Proc. U. S. Nat. Mus., XV, 1892, p. 366. — Dalla 

 Torre, Cat. Hym., V, 1898, p. 230. 



