414 
[March 
British Museum Catalogues. British Lepidoptera^ Parts 5,10 and 
12; Part 13, Nomenclature of Hgmenoptera ; Part 15, Nomenclature 
of Neuroptera; Part 17, Nomenclator of Anoplura^ Euplexoptera and 
Orthoptera ; Part 11, Anoplura^ or Parasitic Insects ; List of British 
Ourculionidse^ with synonyma^ hy John Walton. 9 Parts. 12ino. 
WRITTEN COMMUNICATIONS. 
The following papers were presented for publication in the Proceed¬ 
ings 
Description of a new genus and species of North American Noc- 
tuina, by Aug. P. Grote.” 
“ Notes on Tenthredinidae, with descriptions of new species, in the 
Collection of the Entomological Society, by Edward Norton.” 
“ On the North American species of the genus Osmia, by E. T. 
Cresson.” 
And were referred to Committees. 
VERBAL COMMUNICATIONS. 
Dr. Leidy exhibited twigs of the Sour Gum, Nyssa multiflora, on 
which were specimens of a Coccus. This was demi-oval, about 11 lines 
long and 1 broad, mahogany-colored, smooth and shining. Some of 
the specimens were infested by a fungus parasite, the mycelium of 
which pervaded the interior of the body converting it into a dense 
white mass. From the surface there projected nine or ten re¬ 
curved, pointed stipes from a line to a line and three-fourths long. 
The specimens were obtained last summer. Since they were collected 
a hymenopterous parasite had escaped from several of them, one of 
which was also preserved. 
Mr. James Ridings stated that he had noticed many years since upon 
an Apricot tree, growing in his garden, an insect of a nature somewhat 
similar he thought to that just spoken of. In appearance it seemed so 
far as he remembered, like that exhibited by Dr. Leidy, and doubtless 
was an insect of the same genus, but could not at present undertake to 
describe it exactly. It was always to be found on the under side of 
the branches upon which it seemed to feed by some mode of suction. 
The best idea he could impart to the members of the effect of these 
