26 PROCEEDIXGS OF THE XATIOISTAL MUSEUM. vol-. 64 



apical two-thirds of hind femora and posterior tibiae black, femoral 

 bristles shorter and black. 



Distribution. — Originally described from Bolivia. Eleven males 

 and fourteen females received from Pablo Schild, La Suiza de Turri- 

 alba, Costa Rica. Were it not that the dimorphism is constant ac- 

 cording to sex it would be surmised that two species are here, 



36. CZERNYOLA BASAUS Czerny. 



Craspedochnetn hasalis Czerny, Wien. ent. Ztg., vol. 22, p. 104 (1903). — Kertesz, 

 Ann. Mus. Hung., vol. 1, p. 569 (1903). 



Front black, yellow anteriorly, face and cheeks whitish, antennae 

 and palpi yellow. Thorax and abdomen shining black. Legs yellow, 

 tarsi and niiddle of hind tibiae brown. Wings dark on apical hah and 

 between end of first vein, anal cell and posterior crossvein, only the 

 base and a median crossband hyaline, third and fourth veins parallel, 

 sections of fourth vein 1 :7. Length 2.5-3 mm. 



Hahitat. — Peru. 



37. CZERNYOLA BISETA Hendel. 



Czernyola biseta Hendel, Suppl. Ent. Berlin, vol. 2, p. 80 (1913). 



Male. — Front and occiput black, face, mouthparts, and antennae 

 yellow, arista evidently pubescent. Thorax and abdomen black, 

 bristles reddish. Coxae and legs pale yellow, hind tibiae with pre- 

 apical brown ring. Wings brownish, more intensive on middle of 

 costal half, third and fourth veins parallel. Length 25 mm. 



Hahitat. — Formosa. 



38. CZERNYOLA CLARIPENNIS, new species. 



Male. — Front rufous, piceous posteriorly, cheeks, mouthparts, and 

 antennae whitish yellow, arista finely pubescent, three times the an- 

 tennal length, vibrissa long and curved, two buccal setae half the 

 length of the vibrissa, head bristles yellowish and strong, four fronto- 

 orbitals. Notum blackish, pleurae pale yellow the metapleurae black, 

 two dorsocentrals, the anterior one weak. Abdomen blackish except 

 base and venter yellow, hypopygium elongate. Legs uniformly whit- 

 ish yellow. Wings nearly hyaline, sections of costa 5.5 :1.3 :1, of fourth 

 vein 1.6:1:4.5, of evanescent fifth vein L5:l, third and fourth veins 

 nearly parallel; halteres whitish. Length 3 mm. 



Holotype. — ^La Suiza de Turrialba, Costa Rica, Pablo Schild, collec- 

 tor, in Melander collection. 



39. CZERNYOLA FASCIPENNIS, new species. 



(Fig. 13.) 



Female. — Front black, face and narrow cheeks cinereous black, 

 antennae yellow, brownish at apex, arista finely but evidently pubes- 

 cent, three times the antenna, one vibrissa, five uniform short buccal 



