﻿December, 1809 149 



A NOTICE OF THE SKANDINAVIENS FJADERMOTT OF 

 H. D. J. WALLENGREN. 



BY E, C. B. JOEDAN, M . D . 



(Concluded from page 125.) 



Pteeophoeus (Geoffroy). 



Antennae rather long, those of the male finely serrated, of the female very 

 indistinctly ciliated, with the basal joint thickened. Forehead obtuse, the feathers 

 forming no cone. Palpi shorter than the head, slender, rounded, somewhat ascen- 

 ding, pointed, with the joints not distinguishable. The tibiae all slender, not 

 thickened. First pair of spines in the posterior tibiae very unequal, the inner 

 spine very long, being more than double the length of the exterior one. Anterior 

 wings cleft to one-third of their length, the posterior angle in the anterior segment 

 wanting, in the posterior segment not very distinct. The segments of the posterior 

 wings slender, the posterior segment without black scales in its very long fringes. 

 The anterior margin of the anterior wings deflexed, the posterior margin not 

 toothed, with the whole posterior segment both deflexed and turned in so as to form 

 a channel, in which the posterior wings are received, when the insect is at rest. 

 Veins of the anterior wings nine, of uniform thickness ; the 1st from the base, 

 almost in the very margin, the 2nd joined at the base with the common lower 

 trunk of the veins, the 3rd from the posterior margin of the cell, and as well as 

 the 4th, which is two-branched, arises from the posterior angle of the cell, 

 running into the inferior segment, the 5th to the 7th are simple, and arise almost 

 from the same place (the anterior angle of the cell), running into the anterior 

 segment, the 8th arises from the anterior margin of the cell, and the 9th from the 

 base. The veins of the posterior wings are five ; the 1st, two-branched, arising 

 from the anterior angle of the cell, and running into the first segment, the 2nd and 

 3rd both simple, the 2nd arising from the posterior angle, and the 3rd from the 

 posterior margin of the cell, and ending in the 2nd segment, the 4th and 5th 

 simple, springing from the base, and ending in the 3rd segment. The cell of the 

 anterior wings almost open, the transverse veinlet very slender, not distinguishable. 

 The cell of the posterior wings closed by a spurious transverse veinlet. 



Of this genus, Sweden and England alike possess only one species, 

 the well-known pterodactylus. Wallengren believes this to be the 

 monodactyliis of Linne, and hence calls it JPterophorus monodactylus. 

 The two well-known varieties, in one of which the upper wings are 

 light cinnamon-brown ; and in the other, a light greyish-white, more 

 or less tinged with reddish, seem to be both described. 



8. Leioptiltjs (Wallengren). 



Antennae of middle length, those of the male at least very finely ciliated, with 

 the basal joint slightly thickened. Forehead obtuse, the feathers forming no cone. 

 Palpi either shorter or very slightly longer than the head, slender, pointed, a little 

 rounded, sometimes bending downwards at the last joint. Tibiae all slender, not 

 thickened. Spines of the posterior tibias almost equal. Anterior wings cleft to the 

 third part of their length, no posterior angle to the upper segment, and that of the 

 lower segments also wanting, or else most indistinctly marked. Segments of the 

 posterior wings slender, with fringes of moderate length, the 3rd segment without 

 any black scales in the fringe. Anterior wings almost flat, posterior margin not 

 toothed, deflexed, so as to enclose the inferior wings when at rest, as in the prece- 

 ding genus. 



