Zoological Society. 305 



tioribus pilis albidis margin atis, oculis rufescentibus, pedibus flavescen- 

 tibiis, femoribus saturatiQribus, tibiis rectia elongatis pilosis, tarsis pi- 

 losis fortiter spinosis. 

 Hah. in nidis Aiithophorce refuses apud Gravesend in Comitatu Cantiano. 



The author then gave some account of the habits of the males and 

 females, which he had seen emerge from the nymph state, and re- 

 marked that out of about one hundred and fifty specimens of perfect 

 insects and nymphs obtained from one bee's nest, he had only found 

 eleven males. Having placed about one hundred females in a small 

 glass tube closed, as he thought, securely with a cork, he was sur- 

 prised at the end of a fortnight to find that nearly the whole had 

 escaped, by insinuating themselves into slight fissures in the sides of 

 the cork, between this and the glass. From this circumstance he 

 is now disposed to think that the habit of the female is to penetrate 

 into the bee's nest, after this has been closed, and deposit her eggs 

 on the nearly full-grown larva within; as a few weeks after the 

 escape of these females he discovered three individuals in an open 

 cell of AnthopJiora which contained a nearly full-grown larva, and 

 which had remained nearly close to the glass tube from which the 

 Anthophorabia had escaped. Two of these individuals now appeared 

 tj be in the act of oviposition. He noticed also on the same bee- 

 larva some larvae of the parasites in different stages of growth ; so 

 that he regards the species as an external feeder, like the larva of 

 Monodontomei'us . 



Specimens of the male and female insects were exhibited at the 

 meeting. 



ZOOLOGICAL SOCIETY. 



Dec. 10, 1850.— Prof. Owen, V.P., F.R.S., in the Chair. 



On the Marine Mollusca discovered during the 

 Voyages of the Herald and Pandora, by Capt. 

 Kellett, R.N., AND Lieut. Wood, R.N. By Professor 

 Edward Forbes, F.R.S. etc. 



Out of 307 species of shells collected by the voyagers, 217 are ma- 

 rine Gasteropoda, 1 is a Cephalopod, and 58 marine bivalves. The 

 genera of which species are most numerous are — Murex, Purpuray 

 Trochus, Terebra, Strombus, Conus, Columbella, Littorina, Olivtty 

 CypreBUy Natictty Patella^ Chiton^ Venus, and Area. Among the 

 more local genera represented in this collection are, MonoceroSy 

 Pseudoliva, Cyrtulus, Saxidomus, and Crassatella. The specimens 

 are usually in very fine preservation. Many of the species are rare or 

 local. 



The localities at which they were chiefly collected were the coast of 

 southern California, from San Diego to Magdalena, and the shores of 

 Mazatlan . Unfortunately the precise locality of many of the individual 

 specimens had not been noted at the time, and a quantity of Poly- 

 nesian shells, mingled with them, have tended io render the value of 

 the collection as illustrative of distribution less exact than it might 



Ann. ^ Mag. N. Hist. Ser. 2. Volx.. 20 



