THE ZooLocist—Aueust, 1875. 4583 
Exhibitions, &c. 
Mr. Dunning remarked that the Ornithoptera bred by Mr. Sealy from 
larve taken at Cochin, South India, and exhibited by him at a recent 
meeting, had been identified as O. Minos. 
Mr. Bond exhibited two specimens of a Curculio, sent by Mr. Griffin from 
Nova Fribourgo, Brazil, which were attached to the same twig and were 
both attacked by a fungus. Mr. Janson said that they belonged to the 
genus Hylopus, and were well known to be subject to such attacks. 
The President exhibited a lock taken from a gate at Twickenham entirely 
filled with the cells of a species of Osmia, which Mr. Smith said was most 
probably O. bicornis, of which he had known several instances in locks. 
The larve were still alive and healthy. 
The President also exhibited an example of the minute Hylechthrus 
Rubi, one of the Stylopide, parasitic upon Prosopis rubicola, recently ob- 
tained from briars imported from Epirus, and remarked upon a method of | 
expanding the wings of Stylopide. In repose these wings were rolled up 
in an elongate form; but he found that by pressing them gently forward 
from below they suddenly became erect, and then easily retained an 
expanded position. He further exhibited males and females of Spilomena 
troglodytes (one of the Crabronide) reared from bramble stems found at 
Shere, in Surrey; also a series of Halictus nitidiusculus, stylopized, and 
recommended entomologists going to the south coast in August to search 
for stylopized Halicti, especially on thistles. Finally, he remarked on the 
parasites of Osmia and Anthidium; and exhibited two specimens of the 
Coleopterous genus Zonitis (Z. mutica and Z. bifasciata) reared from the 
cells of Osmia tridentata, and a third (Z. preusta) from those of Anthidium 
contractum, which latter had also produced two species of Chalcidide 
(Leucospis dorsigera and Eurytoma rubicola). He enumerated eleven 
insects as attacking the same Osmia in various stages, of which he had 
himself reared six species, including the two Zonites aforesaid, the other four 
being Cryptus bimaculatus, Melitobia Audouini, Halticella Osmicida and 
Chrysis indigotea; some of which had been recorded by Dufour and Perris, 
together with Stelis minuta and two species of Diptera (Senometopia 
Spinipennis and Conops flavipes); two other Crypti (C. confutor and 
C. signatorius) being cited by Dr. Giraud. The Zonitis devoured the egg 
and pollen-paste whereon the Stelis also subsisted; the Chrysis, Crypti 
and Senometopia fed upon the soft larvee externally ; Halticella was reared 
within the more solid adult larvee, whose tegument, desiccated and black (as 
in specimens exhibited) served for the hybernation of the parasite; the 
Melitobia destroyed the nymph in its soft state by external attack, and the 
Conops deposited its egg in the body of the bee itself after maturity. 
Specimens of this Osmia alive, and of the briars from which they were 
produced, were also exhibited. 
