212 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.57. 



PEailCUSTA PECANIVOKA, new species. 



Allied to Periclista Mcoriae Rohwer but may easily be distin- 

 guished by the polished practically impunctate scutum and scutel- 

 lum (in Mcoriae with uniform, separated punctures), and by the 

 ventral tooth of the mandibles being long and acute (in Mcoriae 

 scarcely exceeding upper, blunt and rounded). 



Female. — Length 5.5 mm. Mandibles with the lower tooth long 

 and pointed, much exceeding the upper; clypeus with large punctures 

 basally, apicaUy depressed, the apical margin with a shallow arcute 

 median emargination, lobes broad, rounded apicaUy; supraclj^peal 

 area not strongly convex, triangular in outline; median fovea oval, 

 deep, with a shallow furrow extending dorsaUy; antennal furrows 

 shallow, broad; depression around anterior ocellus sharply defined 

 above, open below, triangular in outline; postocellar furrov/ straight, 

 sharply defined; vertical furrows sharply defined anteriorly, obsolete 

 posteriorly; postocellar area convex; postocellar line somewhat longer 

 than oceUocular line; fom-th and fifth antennal joints subequal; 

 front with medium size, rather close, setiguous punctures; vertex 

 and temples polished but with a few rather small punctures; entire 

 mesonotum polished, with only a few punctures along the margins 

 of sclerties; mesepisternum polished with only small setiguous junc- 

 tures; stigma nearly four times as long as greatest width; gradujilly 

 tapering from l)ase to interradius then sharply oblique; the apical 

 lower abscissa nearly half as long as interradius; interradius very 

 slightly before middle of third cubital; anellan cell sessile; sheath 

 straight above but with apical angle curved upward so there is a 

 narrow projection, from projection gradually rounding to base. 

 Black; apical part of clypeus, labrum, palpi, spot on mandibles 

 basally, angles of pronotum and tegulae whitish; upper half of mese- 

 pisternum, margins of prescutum, posterior margin of scutum, a 

 spot on scuteUum ferrugineous; abdomen except first tergite 

 (margins of tergites slightly infuscated), and legs except posterior 

 coxae, yellowish ferrugineous; wings hyaline; venation dark brown, 

 costa and stigma yellov/ish. 



Type locality. — San Saba, Texas. Described from two females 

 received from Bureau of Etomology under Quaintance number 

 16703 and bearing host label "Pecan". Collected April 20, 1918, 

 by A. I. Fabis. 



Type.—C&t No. 22203 U.S.N.M. 



PTERONIDEA MELANOSTOMA, new species. 



This species runs in Marlatt's key to iMcljicus (Marlatt), but that 

 species has, according to the description, a deep, oval middle fovea 

 and has the characters of the head and the color of the femora differ- 

 ent. Although the shape of the sheath suggests species of Pontania 



