44 ENTOMOLOGICAL SOCIETY 
killed. The prey is then carried, as a cat carries a mouse, into the burrow 
and is devoured with leisure. 
Mr. Schwarz made a short communication on Rhyncolus cor- 
ticalis. This Calandrid beetle, described by Boheman more than 
40 years since, had hitherto remained unknown to American 
Coleopterists. A specimen from Florida, collected by Mr. H. G. 
Hubbard, corresponds exactly with the description, and the species 
must be referred to Horn's genus Allomimus. It is closely allied 
to A. dubius though apparently specifically distinct. 
Mr. Schwarz also stated that upon examination of about one 
hundred and fifty specimens of the common Tomicus materiarius 
Fitch (now Gnathotrichus materiarius] he had failed to find any 
males among them. In fact, the male sex appears to be entirely 
unknown and has never been described. He alluded to the great 
rarity of, and difficulty in finding, the males of most species of 
those Scolytid beetles which bore into the solid wood, because the 
males probably never leave the burrows. 

APRIL i, 1886. 
Seven persons present.' Mr. Mann in the chair. 
Prof. John Murdoch tendered his resignation as a member of 
the Society. 
Dr. Riley stated that on account of severe illness he had been 
prevented from attending the last two meetings of the Society, 
and asked permission to present his address as retiring president 
at one of the next meetings. This permission was unanimously 
granted.* 
Mr. Schwarz offered some remarks on North American Scoly- 
tids. He exhibited a section of the trunk of Red Oak, showing 
the work of Monarthrum mali, the species being hitherto known 
only to attack Apple trees. About twenty specimens of the 
beetle were found in a single gallery. The main gallery runs in 
the solid wood concentric with the bark ; the secondary galleries 
branch oft' rectangularly from the main gallery and run upward 
or downward. They are but little longer than the beetle itself, 
* Continued ill health prevented Dr. Riley from writing out his address. 
