129 



bling Macroglossa. The example sent is rather dwarfed, but still 

 shows the character of the genus. It is well illustrated by 

 Herrich-Schiiffer, (Auss. Schmett., fig. 170). The genus Xyleutes 

 of Hiibner, to which Packard referred this species, consists of per- 

 fectly heterogeneous forms and, therefore, Mr. Grote's XysUis 

 must be adopted, but I cannot, on that account, call it robinicE 

 Grote, any more than of Packard. This interchange of authors 

 may be satisfactory to workers in the United States, but it causes 

 us endless trouble here by obscuring the true authorship of the 

 specific name, which to us is of far more importance than the 

 generic. I heartily wish, and so does every Englishman on this 

 side of the water, that American authors would reconsider their 

 system of adopting other persons' children. In -daily life such a 

 course would be a heavy tax upon their own patience (and prob- 

 ably their pockets). In Entomology the burden falls upon their 

 brother students. 



AGARISTID^. 



Alypia sacramenti. Grote. 



Some of our examples of A. langtoni approach very close to 

 this; perhaps, as Mr. Stretch says, the example of^. sacramenti 

 is "larger," but not so appreciably larger as some specimens of 

 y4. /rt:;/^/<3;/z are than others. The individual sent to us is from 

 Colorado. 



Alypia kidingsii. Grote. 



A good, distinct species, allied to A. macciilochii, which we 

 have from Hudson's Bay. Mr. Edwards has sent us a pair of 

 A. ridingsii from the summit of the Sierra Nevada. 



COPIDRYAS GLOVERI. Grote. 



This species interests me much from its close relationship to 

 the Indo-African genus ^goccra. The primaries in Copidryas 

 are, however, more Noctuiform. One specimen from Ari- 

 zona. 



ZYG^NID^. 



Gnoph.-ela HOPFFERI. Grote and Robinson. 



One specimen from California. 



It would be interesting to compare the larva of this species 

 ■with that of Pericopis. Unless I am much mistaken they would 

 be found to be very nearly allied. (Compare figure of P. catilina, 

 Cramer, Pap. Ext. i, pi. 79, figs. E. F., which is referable to the 

 sub-genus P/ialoe, Guerin). 



The genus Pericopis and its allies are Arctiidce, but Gnc- 

 4hcela (for what reason I know not) was referred by Walker to 

 the ZygcenidcB, and has ever since remained there. It is true that 

 the two families completely run together, so that one can only 

 fix the boundary Hne between them in the most arbitrary manner, 



