44 



THE ENTOMOLOGIST. 



the name Attacus speculifer. The cocoon, which is very thick 

 and rich in silk, has the same form as that of A. atlas. A. 

 aurota, according to a former correspondent, Mr. A. Michely, 

 who has been dead some years, has six generations each year in 

 Frencli Guiana. Tlie motlis emerge a montli after the formation 

 of tlie cocoon ; the eggs hatch a week after they have been laid ; 

 and twenty days after, the formation of the cocoon takes place. 

 This is one of the species which it would be advisable to rear on 

 a large scale in its native country for manufacturing purposes. 

 The silk, although rather coarse in appearance, is brilliant and 

 abundant. A. aurota has been reared by Mr. Michely in French 

 Guiana on the orange tree and on Eucalyptus ; it can also be 

 bred on Ailanthus, liicinus, Casearia ramiflora, manioc {Jatropha 

 manihot), bamboo, and other plants. 



Attacus hesperus. Another species the moth of which is 

 magniheent. The cocoon is firm, smooth, without any floss, of 

 a dark brown, and about the size of Attacus ciinthia, but it is 

 more perfect in shape than cijnthia. Mr. Michely says the larva 

 can live on the same plants as A. aurota, and that it forms its 

 cocoon fifteen days only after its hatching. There are, he says, 

 five species of silk-producing Bombyces in Guiana. 



Among other American species we must quote the following, 

 described in the ' Transactions of the Entomological Society of 

 London' in 1884, by Westwood (T. I., p. 38) : — 



Saturnia ORIZABA, Westwood. Mexico. 



S. voRULLA, Westwood. Mexico. 



S. LAVENTERA, WcstwOod. MoxicO. 

 S. GELLETA, WcstwOOd. McxicO. 



S. ZACATECA, Westwood. Bogota. 

 EucHEiRA sociALis, Wcstwood. Mexico. 



Tudor Villa, Norbiton, Surrey. 



NOTES AND OBSERVATIONS. 



" Apple Trees and Wingless Moths.*' — The " case that the males 

 do carry up the wingless females " (Entom. xxvi. 20) is not mine. It 

 is that of the ' Standard ' correspondent. But it had my respect from 

 the first, for it was entirely fi-ee from hypothetical language. And I 

 must confess that, as I go farther into it, my respect ripens into faith. 

 Mr. Mitchell may think this a state of things with which " few 

 practical entomologists will agree," Then let us go to the practical 

 entomologist! Let us consult that charming book of Miss E. A. 

 Ormerod's — a book which should be in the hands of every farmer, 

 fruitgrower, gardener, and entomologist — * A Manual of Injurious 

 Insects, and Methods of Prevention.' Turning to page 319, under the 

 head of Cheimatobia brumnta, Miss Ormerod says : — " Another point is 

 the transportation of the ivingless female icinter moths to the trees by the males 



