NOTES 253 



identifying tliis sprcies with the one which is most common in Now 

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

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

 last joints black, rarely two; the hind coxae in the male are armed 

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

 species with X. quadrimaculata Loew. I have not seen any original 

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

 appears from the rote in Centur. VI, 56. Observe the genus Micrap- 

 toina Westwood, Synopsis etc. p. 130, introduced for certain Xylotae. 



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

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



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

 no Xylota at all, and that Mflesia notata 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 EristaUs intersistens Walker with Xylota bn<lia 

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

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

 British Museum. 



249. On Chrysochlamis. Compare Loew, Verh. Zool. Bot. Ver. 1857, 



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

 the word nun before clausu. 



251. Temnostoma excentrica Harris, and T. aer/nalis Lw. The 

 latter, in all the numerous New Englaiid 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 ,,ochre yellow, 

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

 agiees with some specimens from Illinois, \vhich also have a more 

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

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

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

 of the above mentioned species. The female which 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. cxcottricn), as well as from T. 

 ('tii((tlis in having two yellow dots on each side of the thoracic suture 

 (like T. dltrmaii.o) , 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 excen- 

 trica Harris, although it is much rarer than T. <m/c</i'.s. 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 enropean Tcmn. bombi/lans 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. Miletia limb:pei nis. I have seen the type in Mr Bigot's 



