History of the Theory af Heredity. 59 



emy, Jourdan, Siebold and others. They all agree that 

 while parthenogenesis is rare in this species, it does 

 sometimes occur, and it is known that the partheno- 

 genetic eggs give rise to fertile males and fertile females, 

 which may unite sexually and thus produce fertile eggs. 

 Dr. Kipp has reared another form, Smerinthus populi, 

 from eggs fertilized by a male which hatched from a 

 parthenogenetic egg, and laid by a female which had 

 been reared in the same way. 



In Bronn's Klassenund Ordnungen, Gaerstecker gives 

 the following list of moths in which parthenogenesis 

 has been observed, with the name of the observer. The 

 list might be greatly enlarged by the addition of cases 

 which have been recorded since its compilation, but 

 it is sufficient for our purpose, which is simply to show 

 that the fact has been verified repeatedly by many ob- 

 servers. 



Sphinx ligustri, once. Treviranus. 



Smerinthus populi, four times... .Nordmann, Brown, Newnham, 



Kipp. 



Smerinthus ocellatus, once Johnston. 



Euprepia caja, five times Brown, Lehocq, Robinson, Sehlapp, 



Barthelemy. 



Euprepia vilHca, once Stowcll. 



Saturnia Polyphemus, twice. Curtis, De Filippi. 



Gastropacha pini, three times Scopoli, Suckrow, Lacordaire. 



Gastropacha quercifolia, once Easier. 



Gastropacha potatoria, once Burmeister. 



Gastropacha quercus, once Pleininger. 



Liparis dispar, once Carlier. 



" Egger Moth" (Liparis dispar ?), once Tardy. 



Liparis ochropoda, once Popoff. 



Orgyia pudibunda, once Wernberg. 



Psyche apiformis, once Rossi. 



Bombyx mod, many times Schmidt, Siebold, Jourdan, 



Barthelemy, aud others. 



