Kahl: The Dipterous Genus Leucophenga Mik. 393 



CzERNY in Wien. Ent. Zeilg., XXII, 1903, p. 126, footnote: "Nach Brauer" etc., 

 "erschien Thomsons Werk erst im Jahre 1869." 



Aldrich in his Catalogue of N. Amer. Diptera, 1905, ignores the statements of 

 the late Professor Brauer and the same has been done by Bigot, Van der Wulp, 

 Kertesz, Speiser, Hendel etc., and I find myself alone affected by Osten Sacken's 

 footnote, I have recorded Thomson's work as published 1869 in my paper on Mixo- 

 gaster and Ceria in Kansas Univ. Quart., Vol. VI, No. 3, July, 1897, p. 141. 



This species is recorded as from Buenos Aires. Notwithstanding 

 its extraordinary size ''fere 6 mill." there is nothing in the description 

 to show that it does noc belong to the Drosophilince, except possibly 

 the statement "Thorax . . . seris dorsalibus nullis, lateralihus et 

 basalibus distinctis." If Thomson by "dorsalibus" means the an- 

 terior portion of the mesonotum and by "basalibus" the posterior 

 portion of the same, then the position of the species in the Droso- 

 philince is evident. But some of his other statements would indicate 

 that it is a Leucophenga, ior instance: " occipite excavate" — "fronte 

 . . . utrinque setts j nigris prcedita" — "nervis costali cum ramo 

 submarginali cubiti in ipso apice alee conjuncto." If it actually be- 

 longs to the DrosophilincE, this latter statement would refer it to the 

 genus Leucophenga. Should the type still be in existence in Stockholm, 

 or elsewhere, it would be easy for a competent dipterologist to decide 

 the matter. 



