DIPTBKA— TlPULIDxE, 577 



exceedingly slender cell, above and outside of which the wing is slightly 

 clouded. 



Length of body without head, 6""" ; diameter of nead, 0.6°"° ; length 

 of wings, 8.5""". 



White River. (W. Denton.) 



TiPULA TECTA. 



PI. 5, Figs. 46, 47. 



Tipula tecta Scudd., Bull. U. S. Geol. Geogr. Surv. Terr., Ill, 75^-7.53 (1877). 



A single specimen preserved on a dorsal aspect is of a larger size than 

 the other Tipulidse from this locality ; its precise relationship can not be 

 determined until other specimens are discovered, as it has no head nor 

 legs, except a very slender fragment of a tibia; and the wings, being lon- 

 gitudinally folded and partially concealed by the body, along which they 

 lie, show only that the neuration is not discordant with that of the crane- 

 flies, with which its other features agree. The specimen is a female, witli a 

 slight, not greatly arched, thorax, and full and plump, though still slender, 

 abdomen nearly as broad in the middle as the thorax. 



Length of thorax, 1.4"° ; breadth of same, L25'°°' ; length of abdomen, 

 4.75°™; breadth of same, L15°°; length of wings, 7°° 



Fossil Canon, White River, Utah (W. Denton). 



Tipula spoliata. 



PL 10, Fig. 4. 



Fragments of wings only are preserved in two of the specimens referred 

 here ; but a third, in which the wings uniform in tint with dusky veins are 

 thrown up parallel to each other in front of the head, shows also the body 

 and part of the antennae, which are equal and sparsely covered with very 

 short hairs. There is no trace of a stigma on any of the wings, and the 

 cell at the place of the stigma is subfusiform in shape and nearly six times 

 as long as broad, the third longitudinal vein arising only a little before the 

 end of the great cross-vein. The discal cell is rather less than half as 

 long again as broad, its lower inner angle is scarcely more than a right 

 angle, and the fifth longitudinal vein is bent at a considerable angle at the 



VOL XIII 37 



