NOTES. 2">3 



identifying this species with the one which is most common in New 

 England, and agrees with Say's description, except tliat the antennae 

 are more often dark than reddish; that the tarsi usnally have the three 

 last joints I)lack, rarely two; the hind coxae in the male are armed 

 with a spine. This last character prevents me from identifying this 

 species witli X. qiiadrimaculata Loew. I have not seen any original 

 specimen of the latter. Loew seems to have identified (janciiki, as 

 appears from the note in Centur. VI, 56. — Ohserve the genus Micrap- 

 toma Westwood, Synopsis etc. p. ImG, introduced for certain XyJotae. 



247. On the European species of Eumerus, compare Loew, Stett. 

 Ent. Z„ 1848, p. 108 and again Verb. Zool. Bot, Ver., 1855. 



248. Novum genus? I seems evident that Xyhta badia Walker is 

 no Xylota at all, and that 3IiJcf<ia iiotatd Wiedemann must be placed 

 in the same generic group with it. Not having the means of ascer- 

 taining whether this is a new genus, or not, I leave the question open. 

 The synonymy of Eristalis inters iftt ens Walker with Xylota hadia 

 Walker is doubtful, as the descrintion of the face does not quite 

 agree; it is principally based on my recollection of the type at the 

 British Museum. 



249. On ChrysocWamis. Compare Loew, Verb. Zool. Bot. Ver. 1857_ 



250. Spilomyia. Compare, Loew, Centur. V, 33, Nota; but insert 

 the word oion before claic^ii. 



251. Temnostoma excentrica Harris, and T. aeqiialis Lw. The 

 latter, in all the numerous New England specimens which I have seen, 

 has the femora black or brown, with the tips only more or less yellow. 

 Harris describes the legs of his Milesia excentrica as „ocbre-yellow, 

 except the shanks and feet of the first pair, whicb are black". This 

 agiees with some specimens from Illinois, which also have a more 

 saturate-yellow abdomen and narrower black cross-bands than the New 

 England specimens. The description of 21. excentrica, which I prepared 

 for the new edition of Harris' work was drawn from two western males 

 of the above mentioned species. The female whicb I had before me at 

 that time, was from Massachusetts, and I find now that I have a second 

 female of the same kind from Lake superior; both differ from the 

 western males (which I took for T. excentrica), as well as from T. 

 aeqiialis in having two yellow dots on each side of the thoracic suture 

 (like T. alternans), and not a yellow streak; the scutellum is darker, 

 and its pubescence is black, not yellowish; the second abdominal segment 

 has very little yellow, etc. — This may, after all, be the true ixcen- 

 trica Harris, although it is much rarer than T. aequalis. At all events 

 I was wrong in uniting these females with those western males. 



252. Temnostoma Balyras. The remark made by Mr. Jaennicke 

 (Neue Exot. Dipt. p. 4) that the european Tcmn. homhylans occur? in 

 North America, refers to this species. I adopt Mr. Walker's earlier 

 name, under which I have distributed the insect to many collectors, 

 the more so as the description is among the recognizable ones. 



253. Milesia limbipetnis. I have seen the type in Ur Bigot's 



