NOTES. 249 



Hubbard and Scbwarz); fafciafn from Dallas, Texas, (Boll) and from 

 Manitou, Colo , where I took it Aug 18. 



220. Temnccera. Some of the species placed in the genus Yolu- 

 cella, may belong to Tcmnoara, as I do not quite ur.derstand the de- 

 finition of this latter genus. Wiedemann (Auss. Z\v. Preface to Volume II, 

 p. X) was likewise doubtful about it. 



221. Eristalis albiceps Macq. is a distinct species and looks like 

 E. senicidus Loew, from Cuba. I have seen the type in Paris. 



222. Eristalis compactus Walker has the whole leg red, whde 

 E. atviccps as do;~cribed by Loew, has black femora. Nevertheless M. 

 Walker's type, which I saw in London, struck me as being the same as 

 E. ((triceps. The question is therefore, whether the color of the legs 

 is not variable, a question which I cannot solve here. (Heidelberg, 

 Oct. 1877.) 



223. Eristalis Androclus Walker, as I saw it in the Brit. Mns. is a 

 Helophihifi. Nevertheless I retain the name as E. Aiulrochu^ 0. S. 

 (non Walker), as I have referred to it in the Western Diptera and 

 communicated it to many correspondents. 



224. Eristalis semimetallicus. I have seen the type in Mr. Bigot's 

 collection; it looked to me like E. Bastardi. It is possible however, 

 that it is a closely allied, but different, species. 



22-5. Eristalis dimidiatus. Macquart did not recognize E. dimkliatus 

 Wied., and thus came to describe it, first as iiiger in the Sitites a IJitffbn'^ 

 then the male as Llicrminkri and alongside of it, both sexes as cludybms 

 (Dipt. Exot. Vol. II); and then again the female as mcisuralis (in the 

 Supplem. 4). That the eyes of the latter are described as ghd>vou><, is 

 erroneous, as all the known North American Eristalis have pubescent 

 eyes, -with the single exception of E. ueneus. I saw the types of 

 E. Ehtnninicri and cludi/heia^ in the Jardin des Planies, and although 

 I had no opportunity of comparing them with specimens or descriptions 

 of E. diniidiatuf, they did not shake the opinion I had previously for- 

 med of their synonymy. E. iiicisHmlis I did not see. 



226. Er.'stalis flavipes, Syn. Milesia barda Say $ (non $). The 

 original type of Say's is still preserved in the Harris' collection in 

 Boston. 'Tliis synonymy explains the hromi f^pot on the wings of the 

 female, mentioned in Say's description, and which does not exist in the 

 real female of 31. hardn. 



227. Syrphus oestriformis Walker is a rather peculiar Eristalis, 

 represented by a single specimen in the Brit. Mus. 



228. Eristalis tenax. I took this species for the first time in 

 Cambridge, ]Mass. , in November 1875; also several specimens in New- 

 port, R I., in October and November 1876. Since then, I have seen it 

 from Georgia and Missouri (Collect, v. Boeder). It is strange that in 

 my 20 years of North American collecting is had never occui'red to me 

 before. 



229. Eristalis philadelphicus. The type, a single female, is in Mr. 

 Bigot's collection; the yellow spots on the abdomen are somewhat 



