8 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 65. 



length; forewing distad of hairless streak thickly ciliated, basad of 

 hairless streak with a single obliquely transverse row of hairs bor- 

 dering the streak and from three to six similar hairs in the angle 

 formed by the marginal vein and the transverse row of hairs; ab- 

 domen triangular, smooth and polished; ovipositor barely visible at 

 apex. Head, thorax, and abdomen shining black ; antennal flagellum 

 pale orange yellow, the scape black; legs black with the extreme 

 base and apex of anterior and middle tibiae very narrowly, the hind 

 femora entirely and all tarsi, except at apex, pale yellow; wings 

 hyaline. 



Male. — Agrees with the female except that the third funicle joint 

 is distinctly longer and thicker than the pedicel, about equal in length 

 to the pedicel and first two funicle joints combined; the scape on the 

 ventral side has three small round tubercle-like sensoria or glands 

 which are visible only in slide mounts under high magnification; 

 and the abdomen is shorter and less distinctly triangular. 



Type-locality. — Spring Mills, Pennsylvania. 



Type.— C^t. No. 26176, U.S.N.M. 



Host. — Sanhornin juniperi Pergande. 



Described from four females and one male reared by E. A. Hartley, 

 September 16, 1921, from the above named aphid. Antenna of al- 

 lotype male and wing of a female paratype on one slide and antenna 

 of female paratype on another. 



APHELINUS JUCUNDUS, new species. 



Resembles semiflavus Howard but may be distinguished by the 

 yellow face and somewhat shorter third funicle joint. Also re- 

 sembles howardi Dalla Torre but differs from the description of that 

 species in the more extensive and diil'erently arranged ciliation of 

 the forewing. 



Female. — Length, 1.2 mm. Frons, mesoscutum and scutellum dis- 

 tinctly finely shagreened; the frons nearly opaque; mesoscutum 

 pubescent and more or less shining; propodeum very finely trans- 

 versely rugulose ; abdomen nearly smooth ; mesopleura weakly sculp- 

 tured and shining; hind coxae polished. Eyes hairy; antennal 

 scape slender and approximately as long as the funicle and club 

 combined ; pedicel about one and one-half times as long as broad ; 

 first two funicle points each about twice as broad as long; third 

 funicle joint subquadrate; club subequal to the combined pedicel 

 and funicle ; marginal vein of forewing as long as the submarginal ; 

 discal ciliation basad of the hairless streak considerably coarser than 

 that distad, and covering the whole area behind the marginal vein, 

 with a few hairs also in the area behind the submarginal; abdomen 

 ovate, as long as the thorax, the ovipositor sliglitly exserted. Ver- 

 tex, frons above, posterior orbits, more or less of cheeks, occiput, 



