1881.] 135 



spots situated wide apart, a very large sub-quadrate spot commencing at first and 

 terminating near third median nervule, followed by a small sub-lunate spot, and a 

 sub-marginal row of large but somewhat obscure lunate spots. Posterior wings 

 bright red with the outer margin broadly black, inwardly bordered with a series of 

 irregular spots of the same colour, and nine or ten black spots near base ; the broad 

 black marginal border contains two small red spots divided by the discoidal nervule, 

 and a marginal series of large pale and obscure lunate spots. 



Under-side of wings in general pattern as in C. nicobarica, Feld., but white 

 markings much more predominating, and differing principally by the third trans- 

 verse fascia on the posterior wings, which is broader, more irregularly spotted above, 

 and much more regularly and closely margined with small rounded spots beneath . 

 All the faseise are also placed closer together than in Felder's species, and the large 



sub-quadrate spot on the fore-wings is also visible beneath. 



Expanse of wings, 73 millim. 



Hab., Province Wellesley. 



This is a very distinct race or species of the Malayan representa- 

 tives of the genus. It is most closely allied to C. nicobarica, from 

 which it differs by its much smaller size, the extent of the white 

 markings on the anterior wings, and the different pattern beneath, as 

 already described, and its natural position appears to be between 

 Felder's species and C. Methypsea, Butl. 



C. Logani will be figured in a forthcomming work, " Rhopalocera 

 Malay an a." 



Derwent Grove, East Dulwich : 

 October, 1881. 



DESCRIPTIONS OF SOME APPARENTLY NEW SPECIES OF 

 A1LCTIIDM FROM NORTH AMERICA. 



BY ARTHUR G. BUTLER, F.L.S., F.Z.S., &c. 



Having recently had occasion to go through the descriptions and 

 examine the figures of all the known N. American species of Arctia, I 

 have found that two or three species in the National Collection are 

 still unnamed. 



Although it is always possible, in so variable a genus as Arctia, 

 that any named form may turn out to be an aberration or sport of 

 something previously described ; I still think it useful to have names 

 for such forms (even in the event of their proving to be sports), as it 

 obviates the necessity of describing them on every occasion when they 

 are referred to. 



The first species to which I shall have to call attention is nearly 

 allied to A. phyllira, of Drury ; unfortunately, it bears no locality, so 

 that it is possible that it may be a Mexican representative of Drury's 

 species. 



