1915.] NATURAL SCIENCES OF PHILADELPHIA. 467 



curved suture obtaining in many species {eucera Loew, ferruginea 

 Fabricius, pedunculata Loew, et al.). The ninth tergite is usually 

 small and rather inconspicuous, not tumid. The outer pleural 

 appendage is fleshy, in the shape of a more or less flattened lobe, 

 which is Sometimes attenuated or arcuated. 



In general, the species of Nephfotoma are shiny with well-marked 

 stripes and bright colors. In some, however (as macrocera Say), 

 the colors are dull, quite as in some species of Tipula. The six 

 species listed before, as well as the new species described below as 

 Tipula pachyrhinoides, which have hitherto been taken to be species 

 of Nephrotoma, agree with the species of this latter genus only in 

 the bright, shiny coloration, all of the other characters pointing 

 strongly to the fact that they are really species of Tipula. The 

 second Tipida calif ornica described by Doane^ thus requires renaming. 



In the work by Czizek cited before,^ the author of this excellent 

 paper has given a critical comparison of Nephrotoma and Pachyrrhina, 

 pointing out the fact that there is no basis at all for retaining the 

 latter name; but in spite of this clear comparison, the two names 

 are still kept separate. The "discoidal cross-vein^' spoken of by the 

 author is that portion of the vein M between the cross-vein m-cu 

 and the fork of M. 



Nephrotoma penumbra sp- n. 



Frontal prolongation of the head with three stripes: antennae 

 dark broAvnish black, excepting the basal segment; head dull brownish; 

 thoracic dorsum obscure dull yellow with three broad black stripes; 

 pleura yellow spotted with brown; Avings dusky; abdomen dull 

 yellow with three stripes. 



MaZe.— Length, 12.2-13.4 mm.; wing, 11.8-13.6 mm. 



Frontal prolongation of the head moderate in length, yellow, with 

 three broad brownish stripes, the lateral pair being more distinct 

 than the median one. Palpi ^vith the basal segment black, the 

 second and third dark browTi, the terminal segment light brown. 

 Antennae with the basal segment dull yellow, darkened toward the 

 apex, the remaining segments dark brownish black; the flagellar 

 segments deeply incised beneath. Front light yellow; vertex 

 reddish brown with a linear black median vitta. 



Thoracic prsescutum dull obscure yellow with three broad black 

 •stripes, the median one longest and broadest; the lateral stripes not 



* Annals of the Entomological Society of America, vol. 5, p. 49, 1912. 

 ^ Tipulidse Moravicae; Zeitschrift des Mahrischen Landesmuseums, vol. 11, pp. 

 49, 51, 1911. 



