a 
267 
Further, on examining one of the blocks of wood, it was found to 
be perforated in two places, the size of the hole, exactly corre- 
sponding to that of the body of Monochamus dentator, and no doubt 
these passages from the interior were those by which the perfect 
insects had effected their egress. 
Both the Bath specimens of Monochamus dentator were taken in 
the Autumn, from which we are led to infer that season to be the 
one in which they ordinarily appear. 
Both specimens likewise were males, with the antenne in each 
case exactly four inches in length. If both sexes of this insect 
were imported into this country, and the conditions of the 
locality in which they happened to settle were favourable, as to 
climate, wood, and the particular trees required to support them 
in the larva state, there is no reason why the species should 
not breed in this country and eventually become naturalized. 
The Acanthocinus cedilis, to which species the Bath captures were 
in the first instance erroneously referred, and which has been met 
with in widely different parts of Great Britain; is thought to be 
nowhere indigenous except at Rannoch. In the cases in which it 
has occurred elsewhere, in one instance even in the midst of 
London, this species may have been originally introduced, and 
afterwards spread of itself to more distant parts of the country. 
Anyhow it is desirable that every occurrence of the rarer species 
of Longicorns in this country should be recorded, that we may 
determine in each case, as far as we can, the limits of their 
geographical distribution. 
The Natural History of the British Owls. By D, WriiutaMs, F.L.S. 
(Read December 10th, 1884.) 
Our respected President and Founder in his paper last year 
rather reflected upon the members of the Club for devoting the 
papers read at these meetings chiefly to Geology or Archeology, 
