64 PEOCEEDINGS OF THE NATIONAL MUSEUM vol. 69 



Closely resembles nigricoxus, but can be distinguished by the 

 smoother abdomen, hind coxae, and metaploura, by the pale tegulae 

 and trochanters and by the second tergite being sometimes more or 

 less reddish. It apparently is even more similar to cinctus, the only 

 conspicuous difference being the darker hind femora of coleophorae; it is 

 possible that this species is merely an unusually dark form of cinctus. 

 The type of pyrifolii is almost an exact duplicate of that of coleo- 

 fJiorae. 



Face short, impunctate, shining; malar space less than half the 

 length of the eyes; antennae of the types of both pyrifolii and coleo- 

 phorae 31 -segmented; ocellocular line less than twice the diameter of 

 an ocellus; parapsidal furrows impressed, finely foveolate; mesonotal 

 lobes weakly punctate; scutellum polished; propodeum rugulose; 

 mesopleural furrow weakly foveolate; posterior coxae smooth, faintly 

 granular above; metapleura very weakly sculptured, shining; areolet 

 of anterior wing small, triangular, petiolate; abdomen slender; first 

 tergite longer than broad at apex, very finely granular; second and 

 following tergites smooth and shining; ovipositor sheaths a little longer 

 than the abdomen. Head and thorax black; tegulae yellow; all coxae 

 black; fore and middle legs below the coxae yellowish; hind trochan- 

 ters pale; hind femora black; posterior tibiae white, with an annulus 

 near base and the apical third or more black ; middle and hind tarsi 

 more or less blackish ; wings hyaline; abdomen black, with the second 

 tergite sometimes slightly reddish. 



Known only from the type and paratype of coleophorae and the 

 type of pyrifolii; the former were recorded as reared from Coleophora 

 leucochry sella Clemens at Charter Oak, Pennsylvania; the latter is 

 from New Haven, Connecticut. 



39. BASSUS CALIFORNICUS, new species 



Most similar to cinctus, but differs in having all the coxae entirely 

 black, the trochanters more or less blacldsh, the temples distinctly 

 broader and less receding, the malar space longer, and the ovipositor 

 sheaths usually longer. 



Female. — Length, 5.4 mm. Face slightly broader than long to the 

 apex of clypeus, completely polished; malar space more than half as 

 long as the eyes; clypeus more than twice as broad as long, some- 

 what convex; labrum transverse, broadly truncate at apex; third 

 segment of labial palpi very small but distinct; temples rounded, 

 not strongly receding; frons immargined; postocellar line twice, ocell- 

 ocular line more than twice the diameter of an ocellus; antennae 

 slender, 33-segmented in the type, the six or eight apical segments 

 very short, hardly longer than broad; a rather sharp ridge between 

 antennae; parapsidal furrows sharply impressed and foveolate; meso- 

 notal lobes smooth and shining; furrow in front of scutellum pitted; 



