NO. 1866. NEW SAW FLIES IN U. 8. NATIONAL MUSEUM— BOHWER. 383 

 Genus CALOPTILIA Ashmead. 



CALOPTELIA PICEOTERGA, new species. 



Differs from C. immunda (Konow) in the black posterior tibiae, and 

 other characters. 



Male. — Length 7 mm. Labrum depressed, the basal portion 

 punctured; clypeus arcuately emarginate; middle carina strong; 

 middle fovea elongate triangular, separated from the ocellar basin 

 by a transverse ridge; ocellar basin pentagonal, not quite closed 

 above; postocellar area poorly defined on all sides; impressed in the 

 middle; antennas rather slender, extending beyond the basal plates, 

 curved apicaily; stigma rounded on the lower margin; third cubital 

 cell longer than the apical width, and receiving the second recurrent 

 near the base; hypopygidium about one third longer than wide, 

 narrowing apicaily, obtusely rounded; gentalia stipes broader above 

 apicaily. Black and obscure testaceous; head, antennae, mesono- 

 tum, scutellum, apex of abdomen, anterior tarsi and the four posterior 

 tibiae and tarsi black; palpi meso and meta-plurae, mesosternum, 

 anterior coxae and tibiae, dorsal abdominal segments piceous; rest of 

 the insect obscure testaceous; wings dusky hyaline; venation black, 



Cordoba, Vera Cruz, Mexico. One male collected by F. Knab on 

 January 29, 1908. 



Type.— Cat. No. 13991, U.S.N.M. 



CALOPTILIA NUBECULOSA ROSENBERGI, new variety. 



Differs from Calojytila nuheculosa (Konow) as follows : 



Ocellar basin pointed behind the median ocellus, not truncate; 

 postocellar furrow absent, not present; mesonotum not marked 

 with black; venation testaceous, not dark brown; wings mostly 

 yellowish, not dusky; only apical dorsal segment black; face pale in 

 the middle to level of antennas. Female, length 8 mm. 



Chawchamayo, Peru. One female from W. T. H. Rosenberg. 



Type.— Cat. No. 13992, U.S.N.M. 



Genus ACORDULECERA Say. 



ACORDULECERA KNABI, new species. 



In general color belongs to the group of black species with pale legs, 

 but differs from the descriptions of all of these. 



Female. — Length 3.5 mm. Antenna! furrows nearly complete 

 but not sharply defined; middle fovea transverse, shallow, rather 

 large; a shallow depression above the middle fovea; ocellar basin 

 rather small, bounded by low rounded walls ; postocellar area wanting; 

 third antennal joint nearly as long as four plus five; postocellar line 

 nearly twice as long as the ocellocular fine; stigma hardly twice as 

 long as wide, rounded on the lower margin; sheath robust, broadly 

 rounded apicaily; saw with cross rays, teeth small and rounded. 



