20 OHIO STATE ACADEMY OF SCIENCE. 
Names in italics are synonyms of the one in Roman above. 
There are many other synonymous names in the list but evidence 
at hand is not sufficient to locate them. The names that have been 
proposed for our species are brought together as a basis for future 
work. Many of the types of the older students of the family are 
not in existence at the present time, and it is likely that later stu- 
dents have sometimes redescribed their species under other names ; 
so it is no small task to solve present problems in a satisfactory 
way. 
There are a few names in older works given to species with 
habitat unknown: some of these names may have been given to 
specimens from this region. Such names, and a few others ex- 
cluded for other reasons, are not given in the list which follows. 
CHRysops Meigen. 
Illiger’s Magazine IIL, 367, 1803. 
brunneus Hine. Described in this paper. Habitat; Sandusky, Ohio. 
callidus Osten Sacken. Prodrome I, 379, 1275. Williston, Trans. Kan. 
Acad; 1325) Habitat; N:- C.D. C.,.Md.,.0.,.dind) ANG ele 
Conn., Mich., Ills., Fla. 
carbonarius Walker. List I, 203, 1848. Ricardo,-Ann. Mag. Nat. Hist., 
Ser: 7,. Vill, 303. > Habitat; Me, (No EL) Mass-9 iGol Wyo 
Ganadayaieawe 
niger Walker (not Macq.). List I, 202, 1848. 
provocans Walker. Dipt. Saund. I, 73, 1850. 
(?) atra Macquart. Dipt. Exotic Susp. 4, 40, 1850. 
fugax Osten Sacken. Prodrome I, 375, 1875. Williston, Trans. Kan. 
Acad. X, 132. 
celer Osten Sacken. Prodrome I, 376, 1875. Habitat; Me., N. C., Ohio, 
Mass., N. J. 
(?) cincticornis Walker. List I, 201, 1848. Ricardo, An. Mag. Nat. 
iist., “Ser 1; Vill s02: 
ceras Townsend. Psyche VIII, 38, 1897. Habitat; N. M. 
coloradensis Bigot (in part). Mem.,Soc. Zool. Fr. V, 605, 1892. Ri- 
cardo, Ann. Mag. Nat. Hist., Ser. 7, VIII, 397. Habitat; Colo- 
rado. 
cuclux Whitney. Can. Ent. XI, 35, 1879. Habitat; N. H., Me., Pa. 
cursim Whitney. Can. Ent. XI, 36, 1879. Williston, Trans. Kan. Acad. 
XK, 134., .Habitat; N. H. 
delicatulus Osten Sacken. Prodrome I, 380, 1875. Habitat; N. H., Me. 
discalis Williston. Trans. Conn. Acad. IV, 245, 1880. Habitat; Wyo., 
Col. 
divisus Walker. List I, 204. 1848. Ricardo, Ann. Mag. Nat. Hist., Ser. 
7, VIII, 303. Habitat; Fla. 
atropos Osten Sacken. Prodrome I, 372, 1875. 
excitans Walker. Dipt. Saund. 72, 1850. Osten Sacken, Prodrome I, 
373. Habitat; Me., N. H., Pa., Wash., B. ’C., IIls. 
facialis Townsend. Psyche VIII, 39, 1897. Habitat; N. M. 
fallax Osten; Sacken. .Prodrome I, 392, 1875. . Habitat; Mass., N. Y., 
Del., N. J., Md., Ohio. 
