ART. DIPTEEA FROM AMERICA, ASIA, AND JAVA ALDRICH 13 



Remark's. — Described from 63 males and 22 females, all collected 

 by Dr. D. C. Graham, in the high conntry of western China along 

 the Tibet border and in the edge of Tibet. Ten males and one 

 female were collected August 1, 1923, at Yu Long Gong, Tibet, 

 near Tatsienlu, altitude 12,000 feet; 13 males and 3 females at the 

 same place, August 12, 1930; 12 males 9 miles south of Tatsienlu, 

 June 26 and 27, 1923, altitude 8,500 to 13,000 feet ; 12 males and 1 

 female at Yu Long Si, July 26-28, 1930, altitude 14,000 to 15,900 

 feet; 9 males and 1 female in Yu Long Si Gorge, 13,000 to 15,000 

 feet, no date ; and 7 males and 16 females near Wa Hu Pass, Tibet, 

 August 6 and 7, 1930, altitude 14,000 to 16,000 feet. 



In chaetotaxy the species resembles Scatophaga vulpiiia Coquil- 

 lett, from Point Barrow, Alaska. It is the largest species of the 

 genus as far as I know. The lot first cited was labeled, '* Fond of 

 cowdung." 



SCATOPHAGA GIGANTEA OBSCURA, new variety 



A series of males differ from typical gigantea in being smaller, the 

 pollen of the dorsum dull brown, pile of pleurae and abdomen 

 shorter and darker, that of the femora and tibiae almost wholly 

 black, and shorter than in the typical form. The appearance is so 

 different that it is hard to believe the relationship so close as it 

 appears on closer study. The head structure is the same, with the 

 characteristic deep red color of front and face, but the pale pile of 

 the back of the cheek is much less conspicuous. I am not able to 

 recognize a corresponding series of females, as these males approach 

 the typical females in their appearance, except for having in general 

 a darker color of the thoracic pollen. 



ry^?e.— Male, IT.S.N.M. No. 43693, from Yu Long Gong, Tibet. 



Length, 8 to 9 mm. 



Remarks. — Described from 14 males collected with typical 

 gigantea as above cited. Ten are from Yu Long Gong, three from 

 Wa Hu Pass, and one from Yu Long Si. 



SCATOPHAGA AMPLIPENNIS Portschinsky 



Scatophaffa ampliijcnnis Portschinsky, Horae Soc. Ent. Ross., vol. 21, p. 199, 

 1887. 



Portschinsky's description is so brief that it seems worth while 

 to give a fuller one, as a long series is available from Doctor 

 Graham's collecting-. 



A slender blackish species with inconspicuous pile, but with very 

 long and broad wings, which are uniformly dark brown in color. 

 It agrees with Scatophaga scyhalaria Linnaeus in having the attach- 



