134 THK ENTOMOLOGIST. 



ill luck in rearing the Bombyx Yama-mai, I beg to give my 

 experience with the same. The eggs I had of Dr. Wallace 

 came out very well during the latter part of April and begin- 

 ning of May, and the larvae were going on very satisfactorily, 

 but few having died till I left home on the 1st of July, when 

 I gave them in charge of my gardener. They had mostly got 

 through their second moult, were an inch and more in length, 

 and apparently quite healthy ; but in a week after that they 

 began dying off, from no known cause : in the evening they 

 looked all well, and in the morning some twenty or so would 

 be hanging from the sides of the cage, dead and perfectly 

 flabby ; and in about ten days the whole (some 150) were 

 dead, the largest going first. I thought, when T first heard 

 of this, that it might be from some neglect ; but your state- 

 ment and Mr. Doubleday's show me others have, unfor- 

 tunately, not succeeded better than I have. If other gentle- 

 men would kindly give their experience, the causes of our 

 non-success might perhaps be ascertained. — G. P. Shear- 

 tcood ; Cedar Lodge, Stocktvell, August 15, 1868. 



Successful rearing of tlie Yama-mai. — My experience (if 

 worth anything) with Yama-mai was this : — Out of about ten 

 eggs received from Dr. Wallace two only hatched ; one died 

 in a ievf days ; the other fed on without the slightest trouble, 

 and is now in pupa. I kept it under a large globe, with a 

 branch of oak in a bottle, and found that the young succulent 

 leaves were distasteful ; the full-grown ones, from large trees 

 only, were eaten : perhaps there was too much moisture in 

 the food you gave, which might account for their condition 

 at death. — R. H. Fremlin ; IVateriugburg, August 6, 1868. 



Urapteryx sambucata at Gateshead. — In your 'British 

 Moths' you mention A. sambucata as a south-country species: 

 I beg to inform you that 1 have taken a single specimen at 

 Dunston. — T. H. Hedworth ; Dunsion, near Gateshead, July 

 29, 1868. 



Negro Variety of Biston Betularia. — Many pairs of the 

 black variety of Biston Betularia have been taken in cop. in 

 this locality during this and last season : one pair of them 

 has produced more than a hundred black specimens. — Johti 

 Thorpe ; Middleton, near Manchester. 



Is Notodonta dromedarius double-brooded ? — In the ' En- 

 tomologist,' vol. ii. p. .316, I find the question, " Is Noto- 



