46 
modify his opinions to an extent involving the change of specific 
names, in the manner followed in this instance by Linnzeus (which is 
however a power which I deny that an author ought to possess), we 
must remove from the Carolina species all right to the name of Paphia 
and confer it on the African insect ; but I contend that as Linnzeus 
clearly defined the American species under that name in the ‘Museum 
Ludov. Ulr.,’ and in his subsequent work made no attempt to dis- 
criminate the three species, we are warranted, Ist, in retaining the 
name of Paphia for the American insect, in which case it will be ne- 
cessary to sink the Fabrician name of Polyphemus into a synonym of 
Paphia; 2ndly, in giving to the African one the Fabrician name of 
Dione (striking out the incorrect Fabrician reference of Petiver’s 
Guinea insect to the Asiatic species) ; and 3rdly, in giving a different 
specific name to the Tusseh silk moth of India, to which Fabricius 
restricted the name of S. Paphia, but which it ought certainly not to 
retain, seeing that Linnzeus, when he first proposed that name, knew 
only the African and American insects. Drury has however enabled 
us to clear up the difficulty as to this third species, having figured it 
in the second volume of his ‘ Illustrations’ under the name of Mylitta 
(pl. 5. fig. 1= Paphia, Cramer. Ins. 13. tab. 147. fig. A), which name 
Fabricius also adopted, giving the Asiatic species twice over under 
the names of Paphia and Mylitta. 
The synonyms of the three species will stand thus :— 
1. Saturnia Paphia, Linn. Mus. Lud. Ulr. 
B. Polyphemus, Fabr. 
Hab. North America. 
2. Saturnia Dione, Fabricius. 
Phalena Guineensis, Petiver. 
Ph. Paphia, Linn. Syst. Nat., ed. 10. ex parte. 
B. Petiveri, Guérin, Ann. Soc. Sericicole. 
Hab. Africa. 
3. Saturnia Mylitta, Drury, Fabr. 
B. Paphia, Cramer, Fabricius. 
The Tusseh Silkworm Moth. 
Hab. India. 
SaturniA Wan tpercu, Boisduval in Delegorgue, Voy. dans 
PAfr. Austr. ii. p. 600. 
Of this supposed species, which inhabits Port Natal, I have seen 
specimens, but I cannot consider them distinct from 8. Dione, of 
which they are highly coloured individuals. The following is M. 
Boisduval’s description :— 
‘Elle est un peu plus grande que la Saturnia Pyri d’ Europe, et 
son port est assez différent. Le dessus des quatres ailes est jaune, 
fortement saupoudré d’atomes bruns avec une bande étroite, brune 
doublée intérieurement de gris violitre commune réguliére; com- 
mengant prés du sommet des supérieures et arrivant au bord interne 
des inférieures, juste au niveau de l’extrémité de abdomen. Vers le 
base des quatre ailes on voit une autre bande commune trés-sinueuse 
irréguliére, violitre précédé 4 la base des supérieures d’une espéce dé- 
