DII'TKl; A Tll'l I, ID I'.. f.71 



nt' I). stigmosa in the shape of the di-cal ri-11, tin- inner border of which is 

 strain-Ill, and strikes tin- incomplete fifth longitudinal vein exactly where the 

 lower cross-vein strikes it, so that the two are continuous and produce no 

 lireak of direction in the fifth longitudinal vein. The anxiliarv vein is not 

 preserved, and there is no adventitious vein in the stigma, which otherwise 

 is as in that species. The wing is not so slender as in I). stigmosa. 



I ..-iio-th of body, 5.5 mm ; wing, 5.5-0"""; femur, 5 inm ; tibia, 5.7:. 

 first two joints of tarsi, 3.5""". The measurements of the leg are doubtful. 



Fos>il ('anon, White River, Utah. (W. Denton.) 



Another poorly preserved specimen which by the structure of the male 

 forceps is plainlv to be referred to this genus is judged merely from its size 

 to belong to this species, none of the characteristic parts of the neuration 

 being preserved. The body is a very little smaller than in the females of 

 this species, and the male forceps are ovate and rather large. 



Length of body without forceps, 4.5 mm ; forceps, 0.35 mm ; breadth of 

 of them, 0.2 mm . 



On the same stone with this is a leg which probably belonged to it, 

 though some distance from it; the length of the femur is5 mi "; tibia, 4.5 mni ; 

 the tarsi are broken. 



Same locality. 



A single wingless male, taken by Mr. Richardson at Green Kiver 

 \Vyoming, can be referred doubtfully to this species. 



About fifteen other specimens of Tipulidne were collected hv Mr. 

 Richardson, Mr. Mowditch, and myself at Green River; but unfortunately 

 not one of them presents the vestige of a wing and seldom anything more 

 than the body. Probably some of them also belongto this species; others 

 may with more doubt In.- referred to D. stigmosa but all are valueless for 

 any precise determination, and, indeed, may not belong to Dicranomyia 



at all. 



DICRANOMYIA ROSTRATA. 

 IM. :,, Figs. 40, 41, <;:{, c,-. 



/JI.-/-,IH..I,I./I,I rottnta >. ml. I., Hull. U. S. Gool. Ooogr. Siirv. T.-rr.. III. ' 



A Miiirle specimen larger than tlie other specie, ot' Dicranomyia and 

 about the size of Tipula decrepita Scndd. is provisionally referred to this 



genus. The head i> \er\ Mnall. the thorax rather rolnist and v.-r\ ->troiiL;l\' 



