368 



PSYCHE. 



[July 1S90. 



externally; hook pale yellowish, long, 

 flat, larger at base, tapering to tip which 

 is black, recurved, sharp ; penis bhick, 

 first joint with a short apical spine be- 

 hind, second joint stout, short, with two 

 erected spines on the tip ; last joint cy- 

 lindrical, pale ; elevated spoon black, 

 small, flat, incurved. Legs brown at 

 base, femur blackish below, tibia black, 

 the two margins above yellow ; tarsi 

 black ; the legs are long, slender, pilose, 

 with a small brush on the tip of the an- 

 terior femora ; tip of the anterior tibia, 

 with a short membrane below, ending 

 with a spine projecting on the tip. 

 Wings hyaline, somewhat smoky, veins 

 black, costa externally jellow ; pteros- 

 tigma dull yellow, narrow, elongate, 

 cut obliquely on tip ; below \\ areoles ; 

 the base of the wings oransre to the ar- 

 cuius, except the apical half of the ba- 

 silar space ; the transversals in the 

 median space and all below them are 

 clouded with black, forming with the 

 dull orange areoles on the hind wing a 

 brownish looking basal spot ; the three 

 basal antecubitals in the subcostal space 

 faintly clouded with orange ; membran- 

 ula long, snow-white, black at tip ; the 

 angle of the hind wing not sharp, less 

 than rectangular ; front wing with 9 an- 

 tecubitals. 7 postcubitals ; hind wing 

 with 6 antecubitals, 7-8 postcubitals ; 

 triangle of front wings with 3 are- 

 oles, internal triangle empty ; triangle of 

 hind wings with 3 areoles ; two trans- 

 versals in the median space ; two series 

 of discoidal areoles beginning with 

 three ; anal triangle of hind wings with 

 I transversal ; basilar space of all wings 

 empty. 



Female. Similar to the male ; abdo- 

 men a little larger on tip; last segment 

 pale, short, apical margin straight ; ap- 

 pendages pale brown, blackish on tip, 

 twice as long as the last segment, pilose, 

 cylindrical, bent a little inside after the 

 base, pointed on tip, vulvar lamina very 

 short, with a large rectangular notch ; the 

 lateral quadrangular lobes with the apical 

 margin thickened ; earlets wanting, a 

 very small tubercule is visible, femur 

 less dark than in the male ; apical half 

 of the anterior tibia with a series of pale 

 flattened scales like spines ; wings simi- 

 lar, front pair with ii-io antecubitals, 

 9 postcubitals ; hind wings with 6 ante- 

 cubitals, 10-9 postcubitals ; the internal 

 triangle of the fore wings with 3 are- 

 oles. 



Male Female 



Length of body with appendages 53 52 



" " abdomen with " 40 40 



" ilia sup. 34 36 



" ala inf. 33 35 



"• " pterostigma 2^ ik. 



" " appendages sup. 3 2^ 



'• " tibia post. 7 7 



Breadth of caput 7i 7^ 



" ala sup. 8i 8i 



" " ala inf. 11 11 



Expanse of ala inf. 70 74 



Habitat : Mt. Yamaska, near St. 

 Hyacinth, Province of Qiiebec, Canada. 



The male was collected by the Abb6 

 Provancher in 1S75 and the female in 

 1S77. There can be no doubt that both 

 belong to the same species ; the difl'er- 

 ence of the internal triangle of the fore 

 wings, empty and without transversals in 

 the male, with three transversals, united 

 in the centre and forming 3 areoles as in 

 the discoidal triangfle in the female is in- 



