490 PROCEEDINGS OF THE ACADEMY OF [Oct., 



same locality and collector, April 9, 1903; a cf, 9, Havana, Cuba, 

 April, 1900 (J. R. Taylor). The species may be looked for in the 

 Miami section of Florida. 



The ground-color of the thorax is yellowish, the stripes usually 

 indistinct, somewhat plumbeous, the middle stripe narrowly divided. 

 The banded abdomen offers an easy recognition character. 



Geranomyia di versa Osten Sacken. (Plate XXV, fig. 4). 



Geranomyia diversa Osten Sacken; Proceedings of The Academy of Natural 

 Sciences of Philadelphia, p. 207 (1859). 



Northeastern and central United States, ranging from Maine to 

 Virginia, west to Arkansas. 



At "The Rocks" wharf on the James River, Virginia, while a 

 member of the second trip of the "Ecphora, " under Prof. Gilbert D. 

 Harris, of Cornell University, in quest of Tertiary fossils, I found this 

 species in large numbers resting on the dripping, water-spattered 

 cliffs of the Yorktown (upper Miocene) formations. On July 2, 

 1915, they occurred in large numbers, together with Dicranomyia 

 badia Walker. Many were found to be heavily infested with a 

 species of Trombidium, while others, in large numbers, were found 

 beaten into the mud by being struck by the heavy particles of water 

 dripping from above. 



In the north (Ithaca, New York) they occur in mid-summer 

 (August) on rich vegetation along streams. The adult flies feed on 

 various Composite flowers (Solidago, Erigeron) and also on Daucus 

 (Umbellif erse) . 



A 9 specimen, Little Rock, Arkansas, July 11, 1904 (H. S. Barber). 

 Geranomyia domingensis sp- n. (Extra-limital.) 



Related to cinereinota Alexander; rostrum short; head black, 

 enclosing a silvery triangle; prsescutum brownish gray with a broad 

 blackish median line; wings nearly hyaline, stigma indistinct; vein 

 Sc moderate in length. 



Female. — Length, excluding the rostrum, about 5.2 mm.; wing, 

 5.5 mm.; rostrum, about 1.6 mm. 



Rostrum very short, black, palpi biarticulate, black. Antennse 

 with the first segment black; segment two dark brown; flagellum 

 brownish black with a whitish pubescence; first scapal segment 

 elongated; second segment subglobular; flagellar segments oval. 

 Head velvety-black, enclosing a large silvery triangle with its point 

 directed cephalad. 



Mesontal prsescutum brownish gray with a broad blackish median 

 line; lateral stripes less distinct, broad, brownish; scutum brown, 



