NOVITATES ZOOLOGICAE XXVI. 1919. 13 



Castnia (Elina) icarus (Cram.) 



Papilio icarus Cramer, Pap. Exot. vol. i. part ii. p. 26. pi. xviii. £f. A.B. (1775) (Surinam). 



Messrs. Houlbert and Oberthiir place in the icarus section of their genus 

 Elina 6 species and one variety. Mr. Talbot (see postea, p. 30) lumps all these, 

 with the exception of juturna, as aberrations of icarus. In my opinion both 

 these points of view are wrong and I consider we have only one species of the 

 icarus group with 5 subspecies; the most southern of which, icarus endelechia 

 Druce, appears in 4 forms or aberrations. 



As a rule the typical form icarus icarus is considerably larger than the 4 

 other subspecies. 



The Tring Museum has 19 specimens of icarus ircarus: 



1 o' Surinam (ex coll. Van Lennep, ex coll. Felder) ; 1 (J, 1 ? Rio Demerara, 

 British Guiana ; 1 S Mouth of Kouron River, Cayenne, September 1905 (E. 

 Le Moult) ; 1 ? Gourdonville, Kouron River, November 1905 (E. Le Moult) ; 

 1 ? Onaca, Sta Marta, 2,000 ft. (Engelke) ; 1 <J Ciudad Bolivar, June 1891 ; 

 1 ? La Vuelta, Caura River, April 1904 (S. M. Klages) ; 6 <J<J, 2 ?? Suapure, 

 Venezuela, March 1899 (S. M. Klages) : 1 ,^, 2 ?? Cayenne. 



Castnia (Elina) icarus penelope Schauf. 



Castnia penelope Schaufuss, Xunquam Otiosus, p. 9. pi. 1 (1870) (Brazil). 



The Tring Museum possesses 2 <J (J and 2 ?$ which agree exactly with Schau- 

 fuss's description ; and 2 (J<J almost identical with i. endelechia Druce, but with 

 more black on hindwing : ab. endelechiodes ab. nov. 



1 tJ, 1 ? Amazon (Bates, ex coll. Felder) ; 1 o Upper Amazon ; 1 J Nivac, 

 Matto Grosso ; 2 (J<J Nivac, Matto Grosso. ab. endelechiodes ab. nov. 



Castnia (Elina) icarus endelechia Druce 



Castnia endelechia Druce, P.Z.S. 1893, p. 280 (Corrientes Argentina). 



This subspecies is more variable than the others ; but the aberrations 

 appear to be rare, the 3 named aberrations being represented in collections by 

 6 specimens only, viz. 4 ab. icaroides, 1 ab. jordani, and 1 ab. -paraguayensis. 



The Tring Museum possesses 15 specimens of i. endelechia and its aberra- 

 tions. 



8 (J(J, 2 $? Sapucay, nr. Villa Rica, Paraguay, November — December 1902 — 

 1904 (W. Foster) ; 2 <J<J ? ; \ 6 Paraguay. 



ab. icaroides Houlb. 



1 (J Sapucay, nr. Villa Rica, Paraguay, November — December 1904 (W. 

 Foster) ; 1 ? Rio Bermejo, Chaco, Argentina, December 1903 (Jose Steinbach). 



ab. jcyrdani Houlb. 

 1 (J Sapucay, nr. Villa Rica, Paraguay, November — December 1904 (W. 



Foster). 



[ab. paraguayensis Strand 

 The Tring Museum does not possess this aberration.] 



