DIPTEHA TIPULID.E. 573 



SPILADOMYIA SIMPLEX. 



PI. 5, Fig. 37, 38. 

 Spiladomyia limplex Scudd., Bull. U. S. Gool. Guogr. Surv. Terr., Ill, 750 (1P77). 



A single specimen and its reverse show nearly all the parts of til-- 

 body, but all are faintly preserved, so as to be very difficult of study. The 

 specimen is a female ; nearly all the legs are preserved, and all but the lia><- 

 of the wings; the latter, however, trail along the abdomen, so that parts are 

 obscured and the neuration is exceedingly faint. The head is small, tin- 

 eyes almost exactly circular, the palpi a little shorter than the head, the 

 antennae composed of cylindrical joints, a little longer than broad, the legs 

 slender, with femora, tibiae, and tarsi of nearly equal length, and the wings 

 as long as the body. The anterior branch of the fourth longitudinal vein 

 is abruptly bent at its base, so as nearly to connect with the cross-vein 

 uniting it with the third longitudinal vein, and the first and second posterior 

 cells are scarcely more than three times as long as broad. The third poste- 

 rior cell is but very insignificant, as the posterior branch of the fourth 

 longitudinal vein forks but slightly and near its tip. The neuration of the 

 lower part of the wing is uncertain. 



Length of body, 7.5"' ra ; palpi, 0.35"""; fore iV-mora, 4.5"""; middle 

 femora, 4.5"""; hind femora, 4.5 mm ; fore tibia-, 4.65"""; middle tibia-, 4.f. 

 hind tibiae, 4.5' nm ; fore tarsi, 4"' ni ; middle (or hind) tarsi, 4.5 m "'. Measure- 

 ments of tarsi uncertain. 



Chagrin Valley, White River, Colorado. (W. Denton.) 



PKONOPIILEBIA Scudder (irpcov, 



I'niiiiiiihli-lii.i S.-iuli|., Hull. U. S. Gool. Googr. Surv. Torr., Ill, 750 (1H77). 



This i^enus dilVtTs from all Tipnlida-. known to me in the oarlv origin 

 of the third longitudinal vein, which springs from the second almost imnie- 

 dialelv after it> own separation from the first longitudinal vein and 80 

 \\ a \ before the tip uf the auxiliary vein ; the second longitudinal vein 

 arises near the middle of the wing and branches, thu inner branch apparently 

 forking near its tip. These characteristics readily serve to distinguish it 

 from other TipulidjE. The In-ad is small, the antennae long, \<-r\ -lender. 

 and more th-m thirie, -n jointed. Tlny are too imperfect ia the specimen 

 >tndied to allow of any further Malement. The palpi are nut proerv.-'l. |, u t 



