ME. A. G. BUTLEE ON THE SPHJNGHLE. 545 



The type of this species was presented to the collection by the Eev. E. P. Murray. 

 It is exceedingly closely allied to A. ■anceus of Cramer, from the female of which it 

 scarcely differs, excepting in its superior size, slightly broader and less angular primaries, 

 and a dark brown longitudinal streak on the thorax ; it may, I think, be the female of 

 Zonilia mixtura of Walker. 



5. ACOSMEETX MIXTURA. 



<J, Zonilia mixtura, Walker, Lep. Het. Suppl. i. p. 34 (1864). 



Am. 



Not having seen the type, I can only judge by the description that Z. mixtura is re- 

 ferable to this genus. 



Genus 2. Otus, Hiibner. 



Otus, Hiibner, Verz. bek. Schmett. p. 142. gen. 1 (1816). 



1. Otus steiacus. 



Deilephila syriaca, Lederer, Ver. zool.-botan. Vereins Wien, Band v. p. 195, Taf. 2. figs. 9, 12 



(1855). 

 Pergesa syriaca, Walker, Lep. Het. Suppl. i. p. 32 (1864) . 



vSiberia (Lederer). 



Allied to 0. chcerilus of Cramer. 



The genus Otus was restored to the first three species of Walker's Darapsa in 1865, 

 thus restricting the group to nos. 4-10. But, as I have shown, all the species excepting 

 no. 4 are referable to other genera previously formed ; so that Mr. Grote, to all intents 

 and purposes, fixed D. rhodocera as Walker's type. I find, however, that in the first vol. 

 Bull. Buffalo Soc. Nat. Sci. p. 22 he has restored Walker's name to Otus of Hiibner, a 

 genus which is structurally distinct from the type already fixed ; I am therefore unable 

 to follow this later decision of his. He does not state his reasons for the alteration in 

 the Bulletin, nor am I aware that he has done so elsewhere ; still I am satisfied that so 

 sound an entomologist has not acted capriciously. 



^ 



Otus chcerilus. 



Sphinx chcerilus, Cramer, Pap. Exot. iii. p. 91, pi. 247. fig. A (1782). 

 Otus charities, Hiibner, Verz. bek. Schmett. p. 142 (1816). 

 Chcerocampa chcerilus, Harris, Sill. Journ. vol. xxxvi. p. 302 (1839). 

 Darapsa chcerilus, Walker, Lep. Het. viii. p. 182 (1856) . 

 Sphinx azalea, Smith and Abbot, Ins. Georg. vol. i. p. 53, pi. 27 (1797). 

 Sphinx clorinda, Martyn, Psyche, pi. 25. figs. 66, 67 (1797). 



United States (Doubleday) ; West Canada (Bush). B.M. 



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