NOVITATES ZOOLOGICAE XXVI. 1919. 27 



Castnia (Nasca) unifasciata Feld. 



Castnia unijasriata Felder, Reise \omra. Lipid, iv. Erklar. Taf. p. 3. pi. Ixxix. fig. 5 (1875) 

 (Amazons). 



In the Erkldrungen der Tafeln, p. 3, it is stated that this insect was from 

 the Amazons, collection Bates. There is, however, no indication whatever of 

 this on the specimen for the characteristic Felder locality label, a small circular 

 disc of blue paper, only has " Type '" on it ; this, however, is not of much conse- 

 quence, because Felder was, judging from the specimens at Tring, very careless 

 about labels. The specimen in addition to this blue disc has the full Type label 

 in red ink of all the No vara types. 



1 ? Amazons (Bates, ex coll. Felder) (type). 



Of the genus Westwoodia Houlb. (nom. praeocc.) no specimens exist at 

 Tring. Mr. Talbot has explained (postea, p. 430) that pelopia is an Erj-cinid 

 and not a Castniid. Probably Houlbert's pelopioides also is only an aberrant 

 erycina, though we have so many closely allied but distinct Castnias occurring 

 in one and the same district that the fact of both erycina and pelopioides 

 occurring in Ecuador is not necessarily a proof of their identitj'. 



It may strike the readers of this article that I have throughout put Castnia 

 in front of my species names, and the Houlbert-Oberthiir generic names in 

 brackets. This must not be taken to mean that I consider that all the Cast' 

 niinae belong to the smgle genus Castnia, but only that I am not yet satisfied 

 as to the number of genera or their exact limits. At any rate I am not yet 

 satisfied that Messrs. Houlbert and Oberthiir's genera nor the limits of their 

 genera are the final and correct ones. I must, however, associate myself \vith 

 all Mr. Talbot has said in the article here following as to the great advance in 

 our knowledge brought about by the monograph we both have here discussed, 

 and to the immense service Messrs. Houlbert and Oberthiir have rendered to 

 Entomology by their great work. According to the figures given by Monsieur 

 Houlbert in the monograph, Mr. Oberthiir's collection contains 374 specimens 

 of 104 forms of Castniinae, while the Tring Museum possesses 919 specimens 

 of 117 forms. 



The British Museum possesses in the general collection 260 specimens of 

 70 forms, and in the Adams collection 132 specimens of 28 forms, or altogether 

 392 specimens of 76 forms. According to Mr. Houlbert the Paris Museum 

 possesses 165 specimens of 55 forms and the Oxford Museum contains 176 

 specimens of 54 forms. Mr. Joicey's collection at Witley has 709 specimens 

 of 97 forms. 



