THK ENTOMOLOGIST. 261 



specimens : it is generally known on the continent as C. 

 roixtns, Muls., a name long posterior to Mr. Wollaston's. 



In the allied genus Caeliodes, C. exigiuis, Olio., is sepa- 

 rated from C. Geranii, Pk., which it certainly very closely 

 resembles ; and the C. I'ldiginosns, MarsJi., is regarded 

 by M. Brisout not only as a good species, but as t/ie species, 

 the Inie C. guttula being very rare and of more northern dis- 

 tribution : the specimens sent by me were all returned as 

 C fuliginosus. 



From this brief sketch it will be seen that much yet remains 

 to be done in the collation of Faunas of different countries, 

 so as to avoid the results of insulation, which would appear 

 to be quite as active in inducing man to make species as it is 

 said to be in Nature in producing the species themselves. 



G. R. Crotch. 



University Library, Cambridge. 



Some Remarks on the Genus Nothus of Olivier. 

 By G. R. Crotch, Esq. 



The unique species composing this genus has been 

 hitherto of considerable rarity in collections in this country; 

 during, however, the last two years it has been brought me 

 from Monk's Wood, Huntingdonshire, in comparative num- 

 bers, by a man who works there for Lepidoptera. This year 

 1 have also succeeded in finding a few myself, late in June, 

 on the flowers of the whitethorn. They are singularly active 

 when dislodged (though that is no easy mailer), and fly 

 almost immediately, but on dull days are, 1 believe, more 

 quiet. Their resemblance to Telephoridas is very striking, 

 and, occurring among countless hosts of T. ruslicus and T. 

 lividus, it is by no means easy at first to distinguish them ; 

 indeed they have more characters than of mere resemblance 

 in common. They seem to frequent old hedges outside the 

 wood, but I have also taken them in the interior ; and in 

 early spring they were brought me from the blackthorn 

 flowers : these examples ran smaller on the average, and 

 were further remarkable for being almost entirely of the 

 variety described by Stephens (Man. S38, 2648) as N. an- 

 ceps, distinguished by having simple femora in both sexes j 



