SYNOPSIS OF NORTH AMERICAN SYRPHID^. 255 



with some whether or not such a division of the heterogeneous genus 

 of Latreille's shouki not be accepted. But I agree fully with Schiuer, 

 who iirotests against the use of a new name when an older one stands 

 perfectly at our disposal. It is true that none of the species now in- 

 cluded in the genus Milesia were known to Latreille at the time his 

 genus was named. Fabricius, a year later, changed the name of Sijrphus 

 erahroniformis Fab. (Entom. Syst., iv, 299) to Milesia, and the name 

 was adopted by Latreille in his later work (Gen. Crust., iv, 332). Ac- 

 cording to the strict canons of modern nomenclature a genus cannot be 

 based upon a species unknown to its author at the time of its erection, 

 but Milesia of Latreille can hardly be said to have had any type, and 

 if the name is retained at all it should be given to those species that 

 were first restricted by any author. This was done by St. Fargeau and 

 Serville, they restricting it to four species, two of which had been pre- 

 viously included under Spilomyia by Meigen. It seems quite useless 

 and very confusing to retain the name of Sphixea, as is done by Bigot. 



"Southeastern Asia, and especially the East Indian Archipelago, 

 seems to be the real home of this handsome genus. Thirteen species 

 from the Archipelago have already been described. To these I now add 

 three from the Philippine Islands. One more is known from Japan. 

 From the other parts of the world I know of only two Euroi)ean species, 

 and one North American ; a second North American species may be 

 merely a variety. Whether there are some true Milesiw among the 

 South American species referred by authors to that genus I am unable 

 to tell. By all means there are not many." Osten Sacken, Diptera 

 from the Philippine Islands, Berl. Ent. Zeitschr., xxvi, 121. 



Milesia ornata. (Plate XII, figs. 2, 2a, 26, 2c.) 



Musca rirginiensis Drury, Illustr. Exot. Entom., Appendix II; tab. sxxvii, f. 

 6, 1773. 



Milesia ornata Fabricius, System. Antl., 188, 5, 1805; Wiedemann, Aus.Zw., ii, 

 106, 4 ; Macquart, Dipt. Exot., ii, 2, 81, 4 ; tab. 15, f. 4. 



Syrphus trifasciatus Haasmaun, Ent. Bemerk., ii, 67, 10 ; 1799. 



Milesia limbipennis Macquart, Dipt. Exot., 4^ ; Suppl., 147, 8 ; tab. xiv, f. 3. 



Milesia virginiensis Westwood, Drury's Exot. Entom., 2d ed., vol. ii, 77, 1837. 



Sphyxeafulrifrons Bigot, Annales Soc. Ent. Fr., 1884, 341. 

 Hahitat—New England, Illinois, Maryland !, Florida, Texas, Kansas, 

 Guadeloupe (Macq.). 



5,9. Length, 18 to 21""'. Face light yellow, thickly covered with 

 similar pollen and pile, shining in the middle, gently concave; cheeks 

 narrow, shining in front, near the orbits with a black spot; anteuniii 

 situated below the middle of the head in profile. Frontal triangle in 

 male like the face, vertical triangle black, yellow before the ocelli, long, 

 acute, the eyes contiguous for a short distance near the middle of the 

 space between vertex and base of antennce. Front in female convergent 

 toward the vertex, yellow, with a black stripe reaching from vertex to 

 base of antennae. Antennte light ferruginous. Eyes bare, occiput 



