UIPTERA ORTALIIKK. .~i4 1 



I'm- some distance ;ind then suddenly curves, ahm>-i bends upward. In 

 Lithortalis the separation is gradual and not abrnpl. In ( Vro\\ s thermal! 

 transverse vein lies l>e]o\\ or outside the tip of the tirst longitudinal vein ; 

 in Lithortalis il lies within it. In the pattern of tin- markings al-o it ditter- 

 from Ceroxys in that there are no spots whatever before the larger tran- 

 verse vein, exceptini;- that the Miinna, or tin- space Iving between the auxil- 

 iary and lirst longitudinal veins, is testaceous. 



LiTHORTALIS PICTA. 



I'l. ;;, Fitfs. 10, Hi. 



Lilliorlalin pic/a Sm.lil.. KVp. Progr. Geol. Surv. Can., 1-7.V1-76, 'J7T ,1877). 



The thorax, part of the abdomen, and both win-- of the single >pecimen 

 preserved show the upper surface ol' the bod\- with expanded win--. The 

 abdomen is without markings. The niii-^ are very well preserved, the 

 apex slightly angulated between the third and fourth longitudinal veins ; 

 the costa nearly straight on it- basal half, strongly convex bevond : the 

 stigma occupies the entire space between the auxiliary and first longitudinal 

 veins and is dark castaneon>. deep.-niug toward the costa to blackish t'n- 

 cons: the costal vein is blackish fuscoii-: the other veins are luteo-testa- 

 ceous, deepening to blackish fuliginous next or in the spots; the other 

 are dark fuliginous, dcepeiiiiiL;- toward the veins or the margin, and 

 o|' a narrow belt following the larger transxcrse vein and of confluent - 

 at the tips ot the second, third, and fourth longitudinal veins, forming a nar- 

 row marginal belt from just below the tip of the fourth longitudinal vein 

 to half-way between the tips of the lirst and third l'>n'_;-itndinal vein-, broad- 

 enini;- slightly at the extremities of the veins in rapidlv narrowing shoots, 

 which follow the veins a short distance. 



Length ol' thorax and fragment of alidomen, I)""" : breadth' of thorax, 

 1.1'."'' ..... : breadth of abdomen, 1.5""": length of Wing, 5"" ; breadth of same, 



\.i :>""". 



^uesnel, British Columbia. < )ne specimen. No. ."i i I r. (. M hawson. 

 Geological Sur\e\ of Canada). 



