222 TllE CANADIAN ENTOMOLOGIST. 



Genus Typhlopsylla, Tschb. 



36. T, unipectinata, Tschb. 42. T. caucasica, Tschb. 



37. T. octactenus, Kol. 43. T. assimiUs, Tschb. 



38. T. hexactenus, Kol. 44. T. gracilis, Tschb. 



39. T. pentactenus, Kol. 45. T. fraterna, Baker, 



40. T. dictenus, Kol. 46. T. alpina, Baker. 



41. T. musculi, Duges. 47. T. americana, Baker. 



THE GENERIC TYPES INCLUDED IN APATELA. 



BY A. R. GROTE, A.M., HILDESHEIM, GERMANY. 



In 1875-6 I pointed out that the earliest name for the genus, which 

 is commonly called '' Acrojiycta" by authors, is Apatela, Hubn., 1806; 

 the type and sole species cited in the Tentamen being the European 

 A. aceris. My attempts to group the American species and bring them 

 into correspondence with the European forms under subgeneric titles are 

 unsatisfactory, as I have not been able to compare sufficiently the 

 European species in all stages with our own. I have thought it useful to 

 give here a list of the generic names used by me with their types. These 

 latter must be carefully studied in any revision of the group, so that the 

 natural limits of the divisions can be ascertained. In view of the fact 

 that the larvae differ quite strongly in different species, these peculiarities 

 having probably arisen under adaptation to mode of life and environ- 

 ment, also from mimicry, it will be interesting to correlate the groups by 

 characters drawn from all the stages. At the same time it will be safer to 

 found subgeneric divisions only upon peculiarities, howevei slight, offered 

 by the moths alone. 



Apatela. 



1S06. Hubn., Tent, i, aceris. Sole species and therefore type. 



1816. Ochs. 4, 62, refers aceris with thirteen other species to the genus 

 Acronicta, and cites Hubner's Apatelce as synonymous. After- 

 wards the name is credited to Stephens or Ochsenheimer, and 

 Hubner's connection with the name is overlooked. 



1875. Grt., Bull. B. S. N. H. 2, 213, refers the N. Am. species hitherto 

 placed under Acronycta to Apatela and designates aceris as the type. 



ACRONICTA 



1816. Ochs. 4, 62: leporina with thirteen other species. 

 1818. Hubn., Verz. 201: /^^r/;/^ and ^;7z^/y/<7r//m alone, thus restricting 

 the term. 



