DIITKUA iiiTLiD i;. 577 



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

 clouded. 



Length "I' body without head, 6""" ; diameter of head, O.G mm ; length 

 of wings, - .V" m . 



White River. (W. Denton.) 



TlI'ULA TECTA. 



1-1.5, Figs. 4(i, 17. 



TV/difa tecta Scud-l., Bull. U. S. Gool. Geogr. Snrv. T.-rr., Ill, 752-733 (1377). 



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

 the other Tipulidse from this locality; its precise relationship cannot 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, with a 

 slight, nut givatly arched, thorax, and full and plump, though still slender, 

 abdomen nearly as broad in the middle as the thorax. 



Length <>f thurax, 1.4 mm ; breadth of same, 1.2.~> ram ; length of abdomen, 

 4.75""": breadth of same, l.lo ram ; length of wings, 7 mm 



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



TIPUI A SPOLIATA. 

 I'l. Id, Fig. 4. 



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

 hero: 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 bmlv 

 and part of the antenna?, which are equal and sparsely covered with v TV 

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

 cell at the place of the stigma is subfiisiform in shape and nearlv srx times 

 as long as broad, the third longitudinal vein arising onlv 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 lit'ih longitudinal vein is bent at a considerable angle at the 

 \oi, 



