THE CANADIAN ENTOMOLOGIST, 247 



the antealar protuberance around the base of the wings to the posterior 

 angle and across the posterior portion of the mesonotum, and the scutel- 

 luni, reddish ; metanotum bluish, but on each side reddish. Abdomen 

 metallic blue, with short yellowish pile. Halteres and legs reddish-yellow. 

 Wings brownish, costal cells, the middle portion of the submarginal cell 

 along the third longitudinal vein, basal third of the large basal cell, and 

 the two smaller basal cells, yellowish ; a small spot near the outer end 

 and a line near the base of the discal cell, central portion of the first and 

 all of the second and third posterior cells, the anal cell and alula brown- 

 ish hyaline. Length 13 mill. 



Two specimens, one of which is in the collection of the University 

 of Kansas, were collected by the writer, at St. Augustine, Florida. 

 Rivellia floridana, n. sp. 



{Rivellia, n. sp., Proc. Acad. Nat. Sci., Phila., 1895, p. 337.) 



Head reddish, orbits narrowly margined with silvery-white ; antennae 

 yellow. Thorax and scutellum red. Abdomen, first and second seg- 

 ments reddish, the others black ; halteres reddish ; legs yellow. Wings 

 hyaline, veins yellow; crossbands brown or brownish yellow, and wider 

 than R. variabilis and allied species ; the first and second bands are very 

 narrowly connected at the junction of the auxiliary and first longitudinal 

 vein, second and third coalesce at or just below the fourth longitudinal 

 vein (in the latter case there is a very small hyaline triangle, formed by 

 the two bands and fourth longitudinal vein), and end in a point at the 

 posterior margin near the junction of the fifth longitudinal and transverse 

 vein; here also the first band obscurely coalesces with the first and second ; 

 the fourth or apical band narrowly separated or more narrowly connected 

 with the third at the tip of the second longitudinal vein. Length 5 mill. 



Four specimens were collected by the writer on Dayton Island, Lake 

 George, Florida, May 9, 1894. 



DESCRIPTION OF TWO NEW SPECIES OF TABANID.^. 



BY JAMES S. HINE, OHIO STATE UNIVERSITY. 



The limits of the subgenus Atylotus as restricted by Osten-Sacken 

 are not easy to determine. The presence or absence of the ocelligerous 

 tubercle is the character which gives most trouble, for in some species 

 it seems to be absent in the female and present in the male, and one 

 could convince himself without a great amount of imagination that in 

 some species it is present in one specimen and absent in another of the 

 same sex. The type of the subgenus is bico/or, and associated with it are 

 other equally peculiar species whose characters place them at once in 

 Atylotus. They are small forms in which the usual banding of the eyes 

 is lacking, as are also the frontal callosity and subcallous. The wings are 

 glassy, transparent, resembling those of some other Tabanids when 

 teneral. 



