ART. 9 DIPTERA FROM AMERICA, ASIA, AND JAVA ALDRICH 7 



imated, their distance apart on fourth vein generally less than half 

 the length of hind cross vein ; third vein almost imperceptibly curved 

 forward toward tip, ending only a little before tip of wing; costa 

 extending distinctly beyond it, fourth and fifth evanescent from 

 slightly beyond hind cross vein. 



Length, 1.5-1.6 mm, 



Type.—M.^\Q, U. S. N. M. No. 42847. 



Remarks. — Described from 16 mounted and 14 alcoholic specimens, 

 collected February 2, 1930, in a dahlia cellar at Fort Collins, Colo- 

 rado, and sent to the Museum by Sam C. McCampbell, Deputy State 

 Entomologist. 



The species is exceedingly like heteroneura Haliday of Europe, 

 which I have not seen. Duda's full description of heteroneura * 

 seems to leave few differences to note. It has the second abdominal 

 segment in the male much elongated, but ours has it hardly any longer 

 than the third or fourth. In the European species the face is dirty 

 yellow; in ours it is black. These are the chief differences I see. 

 The wing of opaca agrees with Duda's figure. 



This species would go in the subgenus Scotophilella Duda.^ This 

 subgenus, however, is a synonym of Lhnosina Macquart,® as already 

 pointed out by Richards.'^ 



Family OTITIDAE 



(Ortalidae of authors) 



The generic name Ortalis being preoccupied in birds, and in fact 

 in common use there, the family should be based upon the still older 

 genus Otites Latreille^ (type Musca formosa Panzer). This genus 

 belongs to the subfamily Ortalinae of authors, hence the change to 

 Otitinae does not affect the other subfamilies, 



DYSCRASIS, new genus 



Belongs in subfamily Pterocallinae, but is widely different from 

 any known genus. The presence of five pairs of well-developed 

 dorsocentrals, and of the same number of equally large acrostichals, 

 one pair of each being before the suture, separates the genus from 

 all known to me. Numerous venational peculiarities, which are 

 impressively shown in Plate 1, Figure 1, also emphasize the distinct- 

 ness of this form, I was at a loss to place it in any subfamily, and 

 referred a specimen to Professor Hendel, whose extensive publica- 



*Abh. K. K. Ges. Wlen, toI. 10, no. 1, p. 188, 1918. 

 «Abh. zool.-bot. Ges., vol. 10, p. 34, 1918. 

 • Histoire naturelle des insectes, Diptferes, vol. 2, p. 271, 1835. 

 ' Proc. Zool. Soc. London, 1930, p. 291. 



' Histoire naturelle, g6n6rale et particuli&re des crustac^s et des insectes, vol. 14, p. 383, 

 1805. 



