X 



Baron R. von Osten Sacken and Mr. Kdward Hurgess have given nn- 

 much assistance in perplexing points while studying the IMptera hen- 

 recorded. 



Brauer. 



Family LONCH^EID^E Loew. 

 LONVII.KA Fallen. 



LONCH^A SKMX'ENS. 



PI. J{, Fig. 18. 

 Lonchcea tenement Scudd., Rep. Trogr. Orol. Siirv. Can., 1875-1876, 277-278 (1877). 



A portion of the body (excluding the head) too fragmentary to be of 

 any value and a pair of expanded wings faintly impressed <m the stone com- 

 pose the remains of the single individual of this species. The wings are 

 rather slender, obovate and well rounded, with the neuration of Lonch.-ea 

 vaginalis Fall., as given by Westwood in Walker's " Diptera Britannira," 

 excepting that the basal cells do not appear to be quite so large in the fossil 

 species, and the fourth longitudinal vein is slightly more arched beyond 

 the larger transverse vein ; the costal vein is bristly: the wing appears to 

 be hyaline, but there i>an indiration of a slight infumatioii along the larger 

 transverse vein; it is covered with excessively fine microscopic hairs, which 

 also cover all the veins with a delicate pubescence; with thi> >-\,-eption the 

 first longitudinal vein is ban-; the larger transverse vein is slightly oblique, 

 and but little larger than the portion of the third longitudinal vein* lying 

 between the two transverse \c'ms. 



Length of wing, 4.(5""" : breadth of' same, l.S mm . 



Quesnel, British Columbia. One specimen, No. 17, Dr. G. M. l>a\vson, 

 Survey of ( 'anada. 



