THE CANADIAN ENTOMOLOGIST 103 



9 . — Similar in coloration to the cf but with the brown shading before the 

 t.a. line and beyond the t. p. line more prominent; the reniform is contained 

 in a distinct white patch and the black terminal line is bordered inwardly with 

 white. Expanse 50-55 mm. 



Holotype. — 1 cf , Chelsea, Ottawa Co., Que. (July 8-14.) 

 Allotype.— 1 d^, Chelsea, Ottawa Co., Que. (July 8-14.) 

 Paratypes. — Icf, 2 9 's from same locality, and 1 cf , 2 9 's from Aylmer, 

 Que.; all in Coll. Barnes. 



We have already noted (1. c. p. 129) the points by which this species may 

 be separated from the very similar vagans, but we must confess that, without a 

 knowledge of the larva, in many cases a definite identification is practically 

 impossible. There is considerable variation in the species, especially in the 

 9's; these tend to show an indistinctness of maculation, combined with a 

 diffusion of the pale shades, which gives a general washed-out appearance to the 

 specimens and is quite characteristic of the species. As regards the larva we 

 have nothing to add to the description we published under the name of willingi 

 (Contr. IV, (2), p. 130); we have taken the caterpillars on oak, beech and hazel 

 and have found the empty cocoons on poplar so that the range of food-plants 

 appears to be wide. 



Of the Olene species feeding on deciduous trees we now definitely know the 

 larvffi of meridionalis, vagans, leucophcBa, atomaria and dorsipennata. Of these 

 meridionalis and vagans are very similar and it may be, when the connecting 

 link, hasiflava, from the Southern New^ England States is known, that thes^ 

 three forms will be regarded as races of one species rather than as distinct 

 species. It should not be hard for some of our New England collectors to settle 

 this question as the larvae are quite readily found by searching the trunks of 

 trees in the day time; in most instances they are partially concealed in crevices 

 of the bark. Beating in the early morning or at dusk is also productive of good 

 results, especially in a neighborhood where the species has been definitely 

 located. 



The following table may be used as a means of separation : 



Lar\"a entirely ochreous leucophcea. 



Larva gray or brown 



With lateral black hair pencils anteriorly only ._. atomaria. 



With lateral black hair pencils anteriorly and posteriorly 



With long dorsal black hair pencil on Segment X.!.... dorsipennata. 

 Without hair pencil on Segment XI. 



Dorsal tuft on Segment XI broad, brown; many black, 



plumed hairs from lateral tubercles meridionalis. 



Dorsal tuft on Segment XI narrow, blackish ; only one or 



two black plumed hairs from each lateral tubercle vagans. 



Concerning the pine-feeding Olenes Dr. McDunnough was successful in 

 securing a number of the larva' of plagiata by searching pine trunks in the vicinity 

 of Ottawa the last w^eek in May; they were then full grown, pupating in about 

 a week and producing the adults in early June. Mr. J. M. Swaine, of the 

 Entomological Branch, Ottawa, brought in two young larvae of the same species 

 in June, obtained by beating young pine trees in the vicinity of Ft. Coulonge 

 on the Ottawa River; one of these fed up and produced the adult in August; 



