302 Zoological Society. 



of the Andes, and may be characterized as Buliuus Adamsonii. 

 This shell approaches most nearly to Bid. Phasianella, Val. ; it 

 is distinguishable by its bands, the dark colour of its inner lip, and 

 the straightness of its pillar in front. 



A paper was read, entitled, " Descriptions of some new Species 

 of Cuvier's Family of Brachiopoda, by W. J. Broderip, Esq., 

 V.P.G.S. and Z.S., F.R.S., L.S., &c." 



These new species are as follows: Terebratula Chilensis and 

 Uva, Orbicih.a lamellosa and Cumingii, (approaching nearest to 

 Orb. striata, Sow.,) Lingula Audebardii and Semen. Orb. lamel- 

 losa was found by Mr. Cuming in groups, the individuals being in 

 many instances piled in layers one over the other on a sandy bottom, 

 at a depth ranging from five to nine fathoms. At Ancon they 

 were found attached to dead shells, and also clinging to the wreck 

 of a Spanish vessel of about 300 tons, which went down in the bay 

 about twelve years ago. The sunken timbers (for the sheathing was 

 gone to decay,) were covered with these shells, much in the same 

 way that beams on land are sometimes invested with flat parasitic 

 Fungi. At lquiqui they were taken adhering to a living Mytilus. 



In illustration of Mr. Broderip's paper the Shells described in it 

 were exhibited; as were also drawings of them. They form part of 

 the extensive collection made by Mr. Cuming on the western coast 

 of South America. 



Mr. Owen read a paper "On the Anatomy of the Brachiopoda of 

 Cuvier, and more especially of the genera Terebralula and Orbicula." 



The paper commences by a brief history of the formation of the 

 order by Cuvier, and then refers to the anatomical particulars 

 which have been recorded as regarding Terebratula by preceding 

 writers. Among these Pallas seems to have given the best de- 

 scription of the animal. It is on one of this subdivision that the de- 

 scription given by Linnxus of the animal of his genus Anomia is 

 founded. 



Mr. Owen's materials for the anatomy of Terebratula consist of 

 specimens of four species, three of which are inhabitants of the 

 South Pacific Ocean (including one brought home by Mr. Cuming, 

 and two by Captain P. P. King, R.N.); the fourth, Ter. psittacea, 

 Brug., was brought from Felix Harbour, Boothia Peninsula, by 

 Commander J. C. Ross, R.N. 



The mantle adheres very closely to the valves : the lobe which 

 corresponds to the perforated valve is traversed longitudinally by 

 four large vessels ; the opposite lobe is similarly traversed by two 

 such vessels. Its margins are thickened, not as in the Lamellibran- 

 chiate Bivalves from contraction, but owing to a peculiar structure 

 connected with respiration. They are puckered at regular distances, 

 the puckerings being apparently caused by the insertions of delicate 

 cilia, which pass as far within the mantle as they project out of it, 

 but which are so minute as to be observable only by means of a 

 lens. In the interspaces of the cilia the margin of the mantle is mi- 

 nutely fringed, and within the fringe is a canal, which extends along 

 the whole circumference. From this canal the large vessels of 



