May, '08] ENTOMOLOGICAL NEWS. 200 



New species of the Tipulid genus Rhypholophus, 



with a Table for Determining the 



North American species. 



R. W. Doane, Stanford University. 



1. Discal cell closed, or coalescing with the second posterior cell . . 2. 

 Discal cell open, coalescing with the third posterior cell 11. 



2. Wings variegated with gray or brown markings 3. 



Wings uniformly colored 5. 



3. Sixth and seventh longitudinal veins divergent, wings spotted with 



brown in all the cells imiocens O. S. 



Sixth and seventh longitudinal veins parallel or converging toward 

 the tip 4. 



4. A narrow, indefinite, sometimes almost obsolete brown band runn- 



ing from the stigma across the central cross-veins. 



fascipennis Zett. 



Three more or less definite brownish or grayish bands across the 



apical portion and three spots in the basal portion of the wing. 



nubilus OS. 



5. Seventh vein arcuated in such a way that the axillary cell is as wide 



or wider in the middle than at the tip 6. 



Sixth and seventh veins divergent at the tip 8. 



6. Discal cell open, coalescing with the second posterior cell. 



holotrichus O. S. 

 Discal cell closed .. 7. 



7. Antennae altogether brownish arcuatus n. sp. 



First and second segments of the antennas yellow . . fumatns Doane. 



8. Antennae altogether brownish divexus n. sp. 



Antennae yellow at the base 9. 



9. Discal cell open, coalescing with the second posterior cell. 



flaveolus Coq. 

 Discal cell closed 10. 



10. First four segments of antennae yellow nigripilis O. S. 



First two segments of antennae yellow fusiformis Doane. 



11. Thorax reddish, with a distinct black line in the middle. 



rubellus O. S. 

 Thorax brownish or yellowish 12. 



12. Wings with a conspicuous stigmatal spot 13. 



Stigmatal spot not conspicuous 15. 



13. First two segments of antennae yellowish .... lanuginosus Doane. 

 Antennae wholly brownish 14. 



14. Claw at the tip of the lobes of the hypopygium simple, with a single 



straight branch at the base meigenii O. S. 



Claw at the tip of the lobes of the hypopygium complex, base very 

 broad and emitting three short curved branches. .cornutus n. s. 



