98 Prof. J. 0. Westwood on 



is evident that the former is a bad copy of the latter ; 

 they both represent the butterfly as measuring about five 

 inches in expanse (nearly an inch wider than the natural 

 size) , but Donovan incorrectly represents the fascia of the 

 fore-wings as extending quite to the costal margin, as 

 well as having the anterior spots of the fascia much too 

 elongated, especially that between the two terminal 

 branches of the post-costal vein, which is represented as 

 extending backwards to the cell itself; he has also drawn 

 the small white marginal incisures of the fore-wings at 

 equal intervals apart, whereas, two of them are wanting 

 near the apex of the wing. Mr. Butler (Cat. Lep. D. 

 Fabr. p. 252) states, however, that the type specimen of 

 P. Zenobia is in the Banksian collection, and is quite 

 distinct from Donovan's species, the latter being P. 

 Cyprceojila (Butler, Ent. Month. Mag. V. p. 60) . If this 

 be the case, we must admit that Fabricius incorrectly 

 referred his species to Jones's ' Icones,' and that Donovan's 

 assertion of his drawing having been made from the 

 Banksian type was false. We are thus reduced to the 

 Fabrician description ; and I think we must allow that 

 the words " maculis marginalibus albis " can only be in- 

 tended for the insect figured by Donovan and Jones ; 

 the "fascia interrupta nee marginem attingit" in the 

 fore-wings, although not inapplicable to the insect 

 figured by Donovan, would agree better with Stoll's 

 figure of Messalina, (pi. xxvi. f. 2), which Mr. Butler 

 regards as' the true P. Zenobia, agreeing with the insect 

 in the Banksian cabinet ; whilst the words " subtus con- 

 colores at posticae basi flav^e nervis striisque atris " agree 

 better with the insect figured by Jones and Donovan, 

 than with Stoll's P. Messalina, or even P. Odenatus, in 

 which the black mark towards the costa of the base of 

 the hind-wings is divided into two thick spots, which 

 Fabricius would hardly have called a stria ; in fact, the 

 description which he has given of his next species, P. 

 Cynorta, which has the hind-wings, beneath, marked as 

 in Stoll's Messalina, shows how completely he appreciated 

 this character, " affinis omnino praBcedenti {Zenobia) 

 paullo minor et maculae marginales albse desunt at basis 

 flava, alae posticae punctis tribus distinctis nigris ; " " pos- 

 ticis basi flavis nigro punctatis striatisque." Under 

 these circumstances, I am induced to retain the name of 

 P. Zenobia for the insect figured by Donovan, and to 

 apply that of P. Messalina to Stoll's insect, which Mr. 

 Butler regards as the true Zenobia. 



