502 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 58. 



162. Posterior margin of tlae second abdominal tergite curved forward some- 



what at the sides; if not distinctly so, then the tergite is smooth and 



polished 162. schizurae Ashmead. 



Posterior margin of second abdominal tergite straight; abdomen usually 

 compressed on the apical half 163. 



163. Second abdominal tergite rugose; the third tergite usually with numerous 



hairpits; the third and following tergites giving off bluish reflec- 

 tions 163. congreuatus (Say). 



Second abdominal tergite smooth and polished medially; the third and 

 following tergites entirely smooth, without di.stinct hair-pits, deep black 

 and very highly polished; abdomen in female strongly compressed. 



164. hemileucae Riley. 

 DESCRIPTIONS OF SPECIES. 

 1. APANTELES BUCCULATRICIS. new species. 



Differs very markedly from all other species of this genus in that 

 it possesses a very large areola on the propodeum, and at the same 

 time has the three basal abdominal tergites entirely coarsely rugose 

 and occupying almost the entire dorsum of the abdomen, while the 

 ovipositor is subexserted. 



Female. — Length, 1.8 mm. Face apparently narrowing somewhat 

 below, shining, and with a rather distinct median longitudinal ridge ; 

 antennae at least as long as the body; vertex and temples weakly 

 punctate and shining; mesoscutum with sharp punctures; disk of 

 scutellum almost impunctate, polished ; mesopleura largely polished ; 

 propodeum punctate and shining, with a very large and broad 

 diamond shaped areola and prominent costulae; a short median 

 longitudinal ridge leading from the base of the areola to the base 

 of the propodeum; forewing with the stigma large, and the radius 

 decidedly longer than the transverse cubitus; hind wing with 

 the nervellus oblique but not curved toward base of wing; posterior 

 coxae mostly smooth and shining; abdom.en broad, depressed, the 

 first tergite large, broader at apex than at base, and a little longer 

 than broad at apex, more than a third as long as the adomen; 

 second tergite rectangular, a little longer than the third ; the 

 three basal abdominal tergites entirely coarsely uniformly rugose, 

 and occupying practically all of the dorsum of the abdomen; the 

 membranous margins on the apical third of the first tergite and along 

 the second are so narrow as to be indistinct; ovipositor sheaths 

 subexserted. Entirely black, including antennae, the tegulae, and 

 the legs, except the base of all the tibiae, and the fore and middle 

 tarsi, which are pale; wings slightly clouded, the veins and stigma 

 black. 



Male. — Essentially as in the female. 



Type locality. — Palo Alto, California. 



Ty pe.~Cat. No. 22512, U.S.N.M. 



Host. — Bucculatrix on Quercus agrifolia. 



