186 MR. J. O. WESTWOOD ON THE LEPTDOPTEROUS 



colores et dilutiores," apply to it better than to the female of C. Marcelserresii. Mr. 

 Walker, from an inspection of the original drawings of Jones's ' Icones,' Danai, pi. 72, 

 referred the Pabrician insect to the C. nicon of Hubner. A copy of the figure of Jones 

 was made by Donovan, and is preserved in the Hopeian collection at Oxford. By the 

 kindness of Mr. Drewitt, the relative of Mr. Jones, and the present possessor of the 

 volumes of his ' Icones,' I have been enabled to verify the figure and insect, the fascia 

 beyond the middle of the fore wings being quite straight, and extending to the anal 

 angle ; the apical margin of the fore wings is but slightly rounded ; and the black edge 

 of the hind wing does not extend to the outer angle. 



The figure of Drury of his Tap. thais (iii. pi. 16. f. 4) exhibits several characters 

 hitherto unnoticed, which clearly identify it with Hubner's figure of the female of 

 C. nicon. These are the subtruncate (instead of strongly rounded) apical margin of the 

 fore wings, the curved (instead of quite straight and transverse) inner edge to the 

 central pale fascia of the fore wings, and the fulvous outer angle of the hind wings, towards 

 which the second black fascia emits two or three short striga? or small oval spots. In 

 the females of Q. Marcelserresii these strigse or spots are united to the marginal fascia, 

 which is extended to the outer angle. 



The males of the two species are at once distinguished by the undersides of their fore 

 wings being broadly black in the male of C. chremes and pale brownish grey in that of 

 C. Marcelserresii. 



I cannot but think the unique female described by Boisduval as agreeing with 

 " la figure donnee par Drury tres-exacte," is a very small female of thais, measuring 

 only 5 centimetres in the expanse of the fore wings, whereas the female which he 

 describes of thais (his C. chremes) measures 9 centimetres. 



The Castnia morphoides of Walker is certainly only a large female of 0. thais, agreeing 

 closely with Hubner's figure {nicon $). 



The following is the description of an insect from Georgia, in North America, which 

 Herr Schaufuss considers may be a variety of this species. 



" C. thais, var. ? Schaufuss [Nunq. Otios. p. 10]. Viel kleiner als Thais, Dr. Die Binden 

 oben fast verloschen oder schmaler, unten orangegelb : Oberfliigel mit nur einer 

 aus dreieckigen Flecken zusammengesetzen Binde, die in die Bandflecken, welche 

 oben nur angebraunt erscheinen, verlauft." 



Sab. Georgia, America. 



54. Castnia Marcelserresii. C. alis anticis ovatis (margine apicali versus apicem 

 rotundato), livido-fuscis aut f usco-fulvescentibus, fascia recta obscura e medio costse 

 ad medium marginis interni extensa, macula magna obliqua obscura intus subito 

 dilatata et interdum cum fascia irregulari e costa versus angulum analem extensa 

 connexa, apice obscuriore et parum angulato : alis posticis maris fuscis, serie 

 subapicali lunularum pallidiorum vix distinctarum (singulis punctum nigrum in- 

 cludentibus) : alis posticis fceminae rufo-fulvis, fasciis tribus undulatis nigris (ultima 

 marginali intus dentata) : alis anticis subtus in utroque sexu pone medium macula 

 magna bipartita costali fasciaque subapicali plus minusve distincta nigris. Long^ 

 corp. unc. 1. Expans. alar, antic, unc. 2^-3. 



