NOVITATES ZOOLOOICAE XXVI. 1919. 19 



[Castnia (Aciloa) inca Walk. 



Castnia inca Walker, List Lepid. Ins. Brit. Mus. part. i. p. 24. no. 22. 



There are no specimens from either Honduras or Venezuela in the Tring 

 Museum, so I cannot judge if the differences between inca and clitarchus are 

 individual, racial, or specific ; so I must leave the question to be settled later.] 



Castnia (Aciloa) inca orizabensis Strand 



Castnia ditarcha form, orizabensis Strand, in Seitz, Grossschmetl. Erde, vol. vi. p. 11. pi. 8 «. (1913;. 



The figure in Seitz taken from the type at Tring is much too dark. This 

 is the same insect as Monsieur Houlbert's var. mexicana, and therefore Strand's 

 name has priority. The majority of Mexican ?? are much darker than the one 

 mentioned by Walker, and 2 of my 33 also, but 2 agree fuUy with Herrich- 

 SchaefiFer's figure. 



3 cJ(J, 1 ? Orizaba, Mexico ($ type) ; 1 <? Tuxpan, Vera Cruz ; 2 ?? Cordoba, 

 Mexico (Bilimet, ex coll. Felder). 



Castnia (Acilia) clitarcha Westw. 



Castnia ditarcha Westvfood, Trans. Linn. Soc. Land. (2) i. p. 170. pi. 31. fig. 1 (1S77) (Panama). 



Should all this group turn out to be one single species inca, and not two, 

 it remains to be found out whether we have to deal with a number of local races 

 or only one polymorphic race all over its range. In any case, Strand is wrong 

 in naming the Honduras form, which is typical inca of Walker by subsequent 

 designation of Butler. There are at Tring 9 specimens : 



1 (J South America ! ! ? ; 2 $$ ? ; 2 (J^ Presidio, Vulcan de Chiriqui ; I <J 

 Juan Vinas, Costa Rica (W. Schaus) ; 1 cJ Vera Paz, Guatemala (0. Salvin, ex 

 coll. Felder) ; 2 $? Vulcan de Chirique, 5—9,000 ft. (Watson). 



Castnia (Aciloa) rutila Feld. 



Castnia rutila Felder, Seise Novara, Lipid, iv. pi. 79. f. 1 (1874) (Ega, Amazons). 



The Tring Museum has 4 specimens : 



1 ? Ega, Amazons (Bates, ex coll. Felder) (type) ; 1 3 Rio Demerara, British 

 Guiana ; 1 2 Christianeburg, Rio Demerara ; 1 ? Amazons (Bates, ex coll. 

 Felder) ; (ab. rutiloides). 



Monsieur Houlbert gave the name rutiloides to Preiss's figure of rutila from 

 Iqnitos, believing it to be a geographical race, but Mr. Bates's 2nd ? from the 

 Amazons is practically identical with Preiss's figure and thus proves it to be 

 only an aberration. 



Castnia (Aciloa) palatinus (Cram.). 



Papilio palatimis Cramer, Pap. Exot. vol. ii. part .xiv. p. 98. pi. clix. ff. B.C. (1777) (Surinam). 



We have 10 specimens at Tring: 



2 cJ<J Rio Demerara, British Guiana ; 1 <J, 1 ? Bartica, British Guiana , 

 1 $ British Guiana ; 2 <?<?, 1 ? St. Laurent de Maroni, Cayenne, August 1905 

 (E. Le Moult) ; 1 $ Surinam (ex coll. Felder) ; 1 ? Trinidad. 



