2 PROCEEDINGS OF THE NATIONAL. MUSEUM Vol. 70 



notauli absent except at anterior angles of mesonotum; propodeiim 

 smooth, sharply declivous behind, the dorsal portion with a very 

 delicate median longitudinal carina, the posterior face with a very 

 broad median area and on each side at the posterior lateral angles 

 a much smaller area; wings normal for the genus, the first abscissa 

 of radius a little less than twice as long as the second abscissa, 

 which is slightly longer than the intercubitus, discocubital vein 

 complete; brachial cell complete; abdomen one and one-half times 

 as long as the head and thorax, slender, tapering toward apex; 

 first tergite slightly broader at apex than at base ; ovipositor sheaths 

 very slender, tapering to a point at apex, and distinctly curved 

 upward. Head and thorax brownish black; mandibles, palpi, sides 

 of pronotum, legs including coxae, first tergite, basal half of second 

 tergite, more or less of third tergite and the apex of abdomen 

 brownish yellow; antennae uniformly blackish; abdomen, except 

 as indicated, fuscous; wings hyaline, the A^eins and stigma pale 

 yellowish. 



Male. — Length 1.8 mm. Antennae 19-jointed, the flagellar joints 

 all subequal and about twice as long as thick, the apical one very 

 slightly longer than the preceding one; second abscissa of radius 

 subequal to the transverse cubitus and half as long as first abscissa. 

 Head, thorax, abdomen, and antennae nearly uniformly brownish 

 black, the first tergite at base somewhat paler; legs dark brownish 

 testaceous. Other characters as in the female. 



Type locality. — Taihoku, Formosa. 



Type.—Q^X. No. 28983, U.S.N.M. 



Host. — Unilachnus., species. 



Two females and one male received from T. Shiraki and said to 

 have been reared from the above aphid on Pinus by R. Takahashi, 

 October 22, 1923. 



APHIDIUS, species 



Five specimens of a species of Aphidius reared from Macrosipkum 

 neoartemisiae Takahashi in March, 1923, at Taiholcu, Formosa, by 

 R. Takahashi, are in too poor condition for positive determination. 

 This is a small, brownish testaceous species superficially resembling 

 Lysiphlebus japonicus Ashmead but distinguishable by the complete 

 discobital nervure and the more completely areolated propodeum. 



APHIDIUS LATICEPS. new species 



Resembles A. jnnaphidis Ashmead, but the mesoscutum is less 

 strongly sculptured, the wing stigma is more triangular, and the 

 ovipositor sheaths are broader and shorter. 



Female. — Length 3.8 mm. Head smooth, viewed from above 

 broader than the thorax, fully twice as broad as long; viewed from 



