321 



An interesting and valuable piece of biological work for the ento- 

 mologists of British Columbia lies in the breeding of these species. By 

 that alone can we arrive at really satisfactory conclusions concerning 

 their relationship. 



Distribution : Wellington, B. C, May to August. The types 

 were taken at Crescent City, N. Cal.. and are in the British Museum. 

 The National Museum collection contains typical pica from Mt. Rainier 

 and Seattle, Wash. We have seen one specimen from Vancouver Is. 



Nothing is known of the early stages. 



6. Platvptilia aca.ntthodactyla Huebner. PI. XLI, fig. 13. PI. 

 L, fig. 13a. 



iPtcrophorus calodactylns Fabricius (not D. & S.), Mant. Ins. II, 258, 1787 



(fide Mcyyick). 

 Alucila acanthodactyla Huebner, Samml. Eur. Schmett., Aluc. pi V, ff. 23, 24, 



1804-18. 

 Platyptilus acanlhodactylus Walker, List Lep. Ins. B. M. XXX, 929, 18(4 

 Amhlyptilia calminthcu Frey, Stett. ent. Zeit. XLVII, 16, 1886. 

 Ptcrophorus acanlhodactylus Porritt, Ent. Mo. Mag. XXIII, 132, 1886 (biol.). 

 Amhlyptilia acanthodactyla Fernald, Smith's List Lep. N. A. 87, 1891. 



Hofmann, Deutsch. Pter. 85, 1895 (bio!.). 



Tutt, Pter. Brit 53, 1896 (biol.). 

 Amhlyptilia acanthodactyla var. tetralicclla Hofmann, Deutsch, Pter. 86. 1895. 

 Platyptilia acanthodactyla Meyrick, Handbook 433. 1895. 



Fernald, Pter. N. A. 25, 1898. 



Id., Bull. 52 U. S. N. M. 443, 1902. 



Kearfott, Bull. Am. Mus. Nat. Hist. XXIII, 167, pi. VIII, f. 16. 1907. 



Meyrick, Gen. Ins. C, 11, 1910. 



Id., Wagner's Lep Cat. pars 17, 12, 1913. 



Barnes & McDunnough, Check List 150, 1917. 

 Genera! color dull brown. Antennae with alternate light and dark spots 

 above in some specimens, usually uniform dull brown. Palpi and frontal tuft 

 concolorous, the latter short, surpassed by third joint of former. Legs whitish 

 with dark bands on tibiae and tarsi; front and middle tibiae also striped; hind 

 pair mostly brown. Abdomen in poor condition in our series, in one specimen 

 brown with a faint trace of a dorsal stripe similar to tliat of pnnctidactyla. 

 Thorax white behind, with two dark brown dashes. 



Costa of primaries dotted with white to the brown triangle before cleft. 

 Disk in some specimens with traces of the wavy white marks found in pnnc- 

 tidactyla and with the usual vague dark spots near inner margin and in cell. 

 Both lobes with a heavy transverse white line preceded by a dark brown shade. 

 Between this shade and tlie dark triangle the wing is more or less tinged with 

 tawny, containing a small dark dash on the first lobe. Terminal area tinged 



