NOKTH AMERICAN DIPTKRA. 283 



NO'lES. 



Hiematobia R. D.— Thisgemi^ was unknown in North America until 

 the discovery of the introduction of the horn fly {H. serrata) 

 from Europe, in 1887. A native Hmnatobla has since been 

 found on the moose in northern Minnesota {H. aids W. A. 

 Snow, Can. Ent. 1891, p. 87). 

 Dasyphora K. D.— Not yet known in North America, hut may be 



found to occur here. 

 Nitellia R. D.— Bigot refers one California sp. here (Bull. Soc. Ent. 



Fr. 1887, 174; Bull. S. Zool. Fr. 1887, 594). 

 Somomyia Rdi., Atti del Accad. Sci. Bolog. (1861) ; Dipt. Ital. Prod. 



iv, 9. This genus was erected by Rondani to contain Lvcilia, 



Calllphora, and one or two allied genera (besides a number of 

 synonyms), on the ground that none of these was sufficiently 

 separated from the others. If we recognize the above two 

 genera, as now seems advisable, then Somomyia must be dropj)ed. 

 Ochromyia Mcq., Hist. Nat. ii, 250 ; Dipt. Ex. ii, 3, 132.— In the 

 same manner Macquart has proposed this genus to contain 

 Robinean-Desvoidy's genera Ormia, Phmnosia, Palpostoma and 

 BengaUa (only the first one is North American). As some of 

 these forms have the apical cell closed and petiolate while others 

 have it open, and exhil)it other striking differences as well, it 

 becomes evident that this genus cannot be maintained. N. B.— 

 The genus Ormia may possibly be found to be misplaced in this 

 family. 

 The genera Calliphora, Lucilia, Chrysomyia, Compsomyia and Fol- 

 lenia may be found difficult to distinguish, and perhaps it will 

 be deemed necessarv at some future time to drop one or two of 

 these names. Chryiiomyia, as defined by Kondani. differs appre- 

 ciably from Lucilia only by the eyes of the % being always 

 contiguous. Some species of Lvcilia, in the ordinary acceptance 

 of the genus, have the eyes in the S contiguous for a short dis- 

 tance. It may be found possible to include in Chry^^omyia those 

 forms with contiguous eyes in the S , and place the others in 

 Lucilia s. str. These two genera then should be distinguished 

 from Calliphora, Compsomyia and Pollenia, by their general 

 gold-green or blue metallic colors, without lighter coloration on 

 the thorax. When the latter group share this coloring, they 



TRANS. AM. ENT. SOC. XIX. DECEMBER, 1892. 



