XVil, Xxi| (elke) 
Mr. Morice in regarding a genus as formed by the further 
differentiation of a single species, but it appeared to him that 
it was the splitting of the single community into separate 
sub-communities which was the foundation of the process. He 
quite agreed with Dr. Dixey that epigony was far superior to 
syngamy as a test of species, but he was considerably influenced 
by the much greater ease with which the latter evidence could 
be obtained in quantity. For one synepigonic family bred, the 
records of probably many hundred examples of pairing could 
be preserved. ‘The former evidence is indeed hardly available 
at all for the travelling naturalist, while its collection on a 
large scale demanded the existence of the much-needed 
zoological station. Although, as Dr. Dixey had said, many 
degrees of syngamy were known to exist, it is improbable 
that the intermediate grades are sufficiently common to 
obscure the test, except in isolated cases. In conclusion the 
PRESIDENT said he had found much comfort in the reflection 
that after all the inter-breeding community is an objective 
fact, however difficult it may be to prove in any particular case, 
and that if this be accepted as a criterion of species it will be 
one in which the subjective element is reduced to a minimum. 
March 16th, 1904. 
Commander J. J. Waker exhibited specimens of the 
“ Bugong”’ Moth, Agrotis spina, Guenée, from Jervis Bay, 
N.S.W. (referred to at the previous meeting); and Carthxu 
saturnoides, Walk., a.remarkable moth from Perth, W.A., 
now referred to the Geometrina, but possessing an extraordinary 
superficial resemblance to a Saturniid in aspect, though not to 
any one of the known Australian species of that family. 
Colonel C. SwinHoE said the moth was a Monocteniid ; and 
there was nothing in Australia which it could mimic. 
[Mr. WaLker has since presented these specimens to the 
Hope Department. | 
Dr. F. A. Dixey exhibited a remarkable pale form of 
Mamestra brassicx, taken by Dr. G. B, Longstaff and himself 
at Morthoe, North Devon, on July 16, 1903. The specimen 
