AET. 11. FLIES OF THE FAMILY CLUSIIDAE MELANDER AND ARGO. 31 



thii'd and fourth veins somewhat convergent, sections of fourth 

 vein 1:5; halteres blackish; length 3.5 mm. 

 Habitat.— Germnnj. 



48. HETEROMERINGIA NITIDA Johnson. 



Heteromeringia nitida Johnson, Psyche, vol. 20, p. 99 (1913). — Malloch, Proc. 

 Ent. Soc. Wash., vol. 20, p. 8 (1918). 



Male. — Black, the face, sometimes front part of cheeks, antennae 

 except tip, palpi, coxae, basal half of front femora, and posterior 

 legs yellow, sometimes extremities of hind tibiae brownish, knob of 

 halteres white. Front largely opaque: arista short-pubescent. 

 Wings infmnated, strongly so along distal half of costal area, tip 

 and about cross veins. 3 mm. 



Female. — Front not opaque; palpi black except yellow tip. 



Distribution. — Originally described from New Jersey, where in the 

 New Jersey List it had previously been enumerated as Heteroneura 

 pictipes. Malloch records its occurrence in Illinois. The types are 

 in the collection of C. W. Johnson. We have reviewed specimens 

 from the National Museum from Dead Run, Va. (Shannon), Falls 

 Church, Va. (Banks); Chesapeake Beach, Md. (Knab), Bladensburg, 

 Md. (Shannon), Rock Run, Md. (Shannon), and Phmimer Island, 

 Md. (Barber). 



Form nigripes, new variety (fig. 17). Middle and hind femora 

 black except extremities; palpi of both sexes black except whitish 

 tip; front of male reddish toward antennae. 



William's, Ariz. (Barber), Mount Lemon, Ariz. (Shannon); Las 

 Vegas, N. Mex. (Barber), Mathias Point, Va. (Shannon) and West- 

 ville, N. J., the last bearing Coquillett's identification label as Hetero- 

 neura pictipes Zetterstedt. The type, from Las Vegas, is Cat. No. 

 26296 U.S.N.M. 



10. Genus PARACLUSIA Czerny. 



Paraclusia Czerny, Wien. ent. Ztg., vol. 22, p. 90 (1903). 



Foreniost fronto-orbitals convergent, cruciates present, post- 

 verticals small, ©cellars developed, prothoracic present, two post- 

 sutural dorsocentrals, prescutellars present, apical scutellars diverg- 

 ing, preapical very small, front coxae with one interior and three 

 exterior bristles ; crossveins distant. 



Genotype. — The following and only species. 



49. PARACLUSIA TIGRINA Fallen. 



Helomyza tigrina Fallen, Heteromyz., p. 4 (1820). 

 Heteromyza trigrina Zetterstedt, Dipt. Sc, vol. 6, p. 2466 (1847). 

 Clusia tigrina Mik, Ent. Nachr., vol. 23, p. 133 (1897). 

 Paraclusia tigrina Czerny, Wien. ent. Ztg., vol. 22, p. 90 (1903). 

 Heteroneura decora Loew, Wien. ent Monats., vol. 7, p. 39 (1863); Berl. ent. Ztg., 

 vol. 8, p. 337 (1864). 



