186 The Ohio Journal of Science [Vol. XX, No. 6, 



of the American Entomological Society, XXVII, 135, but 

 Dicranomyia had been used by Stephens for a genus of crane- 

 flies in 1829, and a large number of Palearctic as well as Nearctic 

 species are included under it at the present time. 



KIey to Species Described in This Paper. 



1 . Eyes distinctly hairy 2 



Eyes bare 3 



2. Abdomen red with a black middorsal stripe. Cross veins of the wings margined 



plainly with fuscous lautus n. sp. 



Abdomen dark, each segment with a narrow, white posterior border expanding 

 into a small triangle at the middle of the dorsum punensis n. sp. 



3. Third antennal segment with a long, slender process on basal part 4 



Third antennal segment with only a prominence on basal part 8 



4. Body unusually roliust, wings nearly hyaline validus n. sp. 



Body of usual form, wings plainly marked with black or brown 5 



5. First posterior cell wide open 6 



First posterior cell closed 7 



6. Wing crossed by a wide, black band in the region of the stigma, body fuscous, 



jimbratus n. sp. 



Wing marked with Ijrown in patches from base to apex, body Ted..murrens n. sp. 



7. A hyaline spot in the marginal cell near apex feslivus n. sp. 



No hyaline spot in the marginal cell fulmineus n. sp. 



8. Wings with the cross veins and furcation of the third vein margined with 



fuscous 9 



Wings uniform in color or hyaline 11 



9. Abdomen red with a regular black middorsal stripe, first antennal segment 



enlarged mordax n. sp. 



Abdomen dark all over, first antennal segment of normal size lO 



10. Legs black, front tibia narrowly white at base, antenna yeWoY^.. modiciis n. sp. 

 Legs largely red. antenna yellow with the annulate portion black, .furvus n. sp. 



11. Abdomen not striped 12 



Abdomen striped 13 



12. Thorax striped, legs black tantulus n. sp. 



Thorax not striped, legs largely reddish bruesii n. sp. 



13. Abdomen red with a middorsal black stripe tacitus n. sp. 



Abdomen black with a middorsal gray stripe and an additional stripe on either 



side ' 14 



14. Wings lightly infuscated all over, subcallus denuded, rather slender species, 



triiittatus Linnseus 



Wings hyaline, subcallus not denuded, small short species curtus n. sp. 



Tabanus fulmineus n. sp. 



Length 16 millimeters. Body entirely rust red. Vestiture mostly 

 pale yellowish but black at tip of abdomen. Antennae and palpi 

 colored like the body, proboscis black at the tip, palpi long and 

 slender nearly as long as the proboscis, first segment of the antenna 

 nearly cylindrical, upper angle of the third segment produced into a 

 long slender process three-fourths as long as the segment ; front narrow, 

 sides parallel, frontal callosity widest below, slightly narrowed, slender, 

 elongate, reaching nearly to the vertex. Wings an intense brown, an 

 elongate hyaline spot in the discal cell and a small rounded one in the 

 first submarginal cell just before the branching of the third vein which 

 is devoid of a stump. First posterior cell closed and rather long petiolate. 



