214 



pearance. The specimen itself was not yet received. Dr. 

 Storer proposed a vote of thanks to Dr. F. B. E. Browne 

 for this donation, and to Dr. A. W. Chapman, of Apalachi- 

 cola. Fa., for a package of plants of that region, presented 

 at a late meeting. Voted accordingly. 



Dr. Gould read descriptions of the following species of 

 Physa, from the Collection of the Exploring Expedition. 



Physa tabulata. Testa ovata, sub-solida, impolita, fuligino- 

 sa ; spira anfr. 4-5 ventricosis, superne angulato-carinatis, late 

 tabnlaiis : aperlura elliptica, dimidiam testse longitudinis super- 

 ans ; columella albida, vix plicata ; fauce fusco-castaneo. Long. 

 y'q, lat. ^(j poll. Hah. New Zealand. 



Not to be mistaken for any other species. It is very much 

 more angular than P. ancillaria, and the keel upon the angle, 

 when closely examined, is found to be minutely crenu'ated. 

 P. variabilis, Gray, has the lower instead of the upper part of 

 the whorl angular and keeled. 



Physa gibbosa. Testa obovata, tenuis, glabrata, luteo-cornea : 

 spira acuminata, anfr. 5 rotundatis, ultimo postice vald^ gibboso, 

 antice altenuato ; apertura angusla, subovalis, trientes duae lon- 

 gitudinis adequans ; columella sinuata, callo induta. Long, f, 

 lat. f poll. Hah. New South Wales. 



The resemblance to P. ancillaria, in the younger specimens, is 

 very striking ; the older ones are more like P. tabulata, but the 

 last whorl is merely gibbous and not angular. P. Novcb Hol- 

 landicB is somewhat similar, but is much more elongated, and 

 neither angular nor gibbous. 



Physa sinuata. Testa parva, ovata, cornea, arcuatim striata: 

 spira acuta; anfr. 5 rotundatis postice sub-angulatis ; sutura 

 profunda : apertura obovata, angusta, antice sub-efTusa, postice 

 emarginata ; labro antrorsum arcuato ; columella incrassata, sub- 

 perforata, reflexa. Long. ^, lat. { poll. Hab. Feejee Islands. 



-Eemarkable for its thickened inner lip, and for the advancing 

 outer lip and consequent posterior sinus and arched striae of 

 growth, found in no other species except P. gibbosa. 



Physa reticulata. Testa tenuis, elongata, ovato-conica, fulva, 



