190 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.58. 



larged especially; scape with its dilation distinct, moderate, folia- 

 ceous. Pedicel twice longer than wide at apex, as long as funicles 1-4 

 united, the latter subequal, lilce ring-joints, slightly enlarging 

 distad, thrice wider than long; 5 and 6 each distinctly larger but 

 still wider than long; a small ring-joint. Mandibles tolerabl}'- long, 

 its three teeth acute, rather strong, subequal. Marginal vein twice 

 longer than \vide, subequal to the postmarginal, the stigmal nearly 

 thrice longer. Hairless line narrow, closed near caudal margin. 

 Eyes rounded-ovate, somewhat shorter than the cheeks. The male 

 is the same but the club is solid. 



Described from one male, two females in the collection of the 

 United States National Museum from Oaxaca, Mexico (Koebele). 



Types.— C&t. No. 20852, U.S.N.M., the three specimens on tags, 

 the heads of both sexes, a female fore wing, fore and middle leg on 

 a slide. 



The locustiform head (short and rounded in TyiidaricJius) , the tri- 

 dentate mandibles (bidentate, the second tooth broadly truncate in 

 the other), the somewhat smaller club and the distinctly longer 

 stigmal vein (marginal vein two and a half times longer than wide, 

 slightl}^ longer than the stigmal or postmarginal in the other) dis- 

 tinguishes the above species from Tyndariclius genotype. Tyndarichus 

 has the scape dilated, the club enlarged but not greatly. Types 

 compared. 



LITOMASTIX AURICOLLIS Thomson. 



A species of Berecyntus hence, the latter is probably a synonym of 

 Litomastix. Differs from B. halceri in having the solid club somewhat 

 longer but otherwise I can not distinguish between them. S3aionyms 

 very likely. One female of the European species in the United 

 States National Museum labeled in Thomson's hand. 



EXORISTOBIA PHILIPPINENSIS Ashmead. 



Genotype. 



Head shghtly longer than wide, broadly subtruncate and narrower 

 ventrad, the face inflexed, the scrobes forming a deep, long triangle 

 but which does not reach the anterior ocellus, the frons moderate in 

 width with numerous scattered large pin-punctures. Cheeks about 

 as long as the eyes, the latter ovate, xintennae well separated, inserted 

 below the line of the eyes. Scape with a moderate, foliaceous ex- 

 pansion ventrad, this broadly convex and distinct; flagellum clavate, 

 the funicle joints all much wider than long, not annular, 6 widest, the 

 club obliquely truncate at joint 3, the latter cross-linear or very 

 short; club not quite as long as the funicle, wider. Marginal vein 

 thi'ee and a half times longer than wide, the postmarginal and 

 stigmal subequal, the latter curved each a little longer than the 

 marginal, oblique hairless line present. Mandibles with tliree equal, 

 acute teeth of moderate size. Scape yellow brown except at base. 



