SCIENTIFIC KOTES. 



255 



of unideiitaria. It is proved then, I think, that Mr. Pierce, though 

 unfortunately reversing the facts as above explained, is right in his rnain 

 conclusion that the two species are to be regarded as quite distinct. 

 Mr. Tutt's caution as to the possibility of a specimen being mended 

 with a body from another species is not uncalled for. I once received 

 from a most illustrious Continental entomologist a Pyrak with a head 

 belonging to an insect of a different genus, which at first caused me 

 great astonishment, and it is well-known that Mr. Stainton once de- 

 scribed a new species from an equally artificial monster. — E. Mevrick, 

 The College, Marlborough. October 22nd, 1892. 



Male copulating more than once. — This season a male Leitcoma 

 salicis was found in company with four distinct females of this species, 

 this taking place on four consecutive days ; the strange part of the 

 whole thing being that all the females laid perfectly fertile ova. Prior 

 to this experience I thought that the first intercourse usually proved 

 fatal to the male. — F. B. Newnham, Church Stretton, Salop. 



The Ova state of GEOMETRiE. — The following notes on the duration 

 of the egg state of certain Geometry, may be looked upon as a supple- 

 ment to those already published by Mr. Fenn (ante, pp. 173-176). 



GEOMETRiE. DURATION OF OVA STATE. 



— F. J. BucKELL. August^ 1892. 



