300 ENTOMOLOGICAL NEWS [xxxii, '21 



10. Black ; abdomen not vittatc hek'ocincta Doane 



Not as in the alternative 11 



11. Thoracic stripes not margined inbtcmticornis Doane 



Thoracic stripes margined 12 



12. The median thoracic stripe divided by a longitudinal line 13 



Not as in the alternative iynota Alex. 



13. Cell /?4-f-5 white in its basal portion centralis Loew 



Not as in the alternative 14 



14. Ninth tergite of male with deep, U-shaped emargination. 



Carolina Alex. 



Ninth tergite short and broad, posterior margin broadly con- 

 cave canadensis Loew 



15. Flagellar joints yellow, basal enlargement dark fuscous, 



balioptera Loew 

 Flagellar joints fuscous, basal enlargement yellow, '.beaulicni sp. n. 



Tipula neptun spec. n. 



General coloration yellowish-gray ; allied to senega Alex., pallida 

 Loew. Wings gray, pale, markings distinct. Ninth tergite of male 

 with deep, broad V-shaped emargination. Eighth sternite with median 

 and lateral appendages. 



$ Length, 16 mm.; wing. 15 mm. Head dusky, yellowish-gray. 

 Rostrum of moderate length, concolorous ; frontal prolongation with 

 ill-defined median darker line : nasus depressed. Palpi brown, fourth 

 joint shorter than the preceding joints together. Antennae of mod- 

 erate thickness; extended they reach to about the end of the scutel ; 

 scapal joints dull yellow, first flagellar joint light brown, the following 

 joints fuscous, the basal enlargement dark fuscous, distinctly emargi- 

 nate beneath ; setae not or but little longer than the respective 

 joints; pubescence very short, white. 



Thoracic dorsum gray ; stripes brown, the median prescutal stripe 

 divided by a fusiform line of the ground color, the exterior margin 

 of the stripe with a row of whitish hairs. Scutum gray with a dark, 

 fuscous patch each side. Scutel yellowish-fuscous, with a slight sheen. 

 Postnotum gray, with fuscous median stripe, wider anteriorly. Pleuro- 

 dorsal membrane dark yellow. Pleura gray, grayish white pruinose. 

 Halteres pale, club fuscous. Legs yellowish-fuscous. Pilosity very 

 short, black, appressed. Coxae grayish-yellow ; femora sordid yellow 

 basally, darker toward the apex; tibiae light fuscous; tarsi dark fus- 

 cous, the metatarsi much shorter than the tibiae. Wings gray, darker 

 in apical portion, the pale markings distinct, spots in 1st r and 2nd r, 

 r2 and r3, r4+5, basal part of cell 1st M2, base of cell M4, a large 

 spot at three-fourths of cell M and a large spot at one half of cell 

 Cu and A\\ this spot extends indistinctly into cell .17. 



Abdomen yellow, light brown posteriorly, a fuscous dorsal stripe 



