179 



Helix lurida. Testa globoso-conica, depressa, glaberrima, 

 iiilida, livido-castanea, infra pallescens, ad umbilicum minutum 

 declivis : spira anfr. 6 convexis, radiatim et obtuse striatis, ultimo 

 prope aperturam subangulato ; sutura impressa, marginata : aper- 

 tura lunata, fauce livida ; labro acuto, ad umbilicum reflexo, albo. 

 Lat. 1, alt. ^ poll. Hab. Feejee Islands. 



Groups with the preceding species to which it is very similar, 

 but differs essentially in the want of revolving strias, its carinated 

 periphery, and light-colored umbilical region. It probably be- 

 longs to Nanina. 



Helix calva. Testa tenais, depresso-globosa, nitida, paliide 

 stramineo-virescens, arete umbilicata : spira anfr. 5 baud turgidis, 

 striis incrementi obsoletis ; sutura baud impressa, marginata: 

 apertura semilunaris ; labro slmplici, acuto, ad umbilicum paulum 

 reflexo. Lat. |-, alt. ^ poll. Hah. Feejee Islands. 



Similar to the preceding, but smaller and lighter-colored, and 

 is plainly distinguished by its smooth, shining, rounded spire, 

 similar to the summit of H. Moricandi or H. lychnuchus. This 

 must also be a Nanina. 



Dr. G. also announced the receipt of another letter from 

 Dr. F. W. Cragin, of Surinam, accompanying various con- 

 tributions to the Cabinet, and proposed a vote of thanks to 

 Dr. C. Voted unanimously. 



Dr. Cabot mentioned, that having heard that Terns 

 were breeding on the islands of Beverly harbor, he had 

 visited those islands, and found the birds there, in great 

 numbers. The Arctic Tern and the Roseate Tern were 

 observed, besides great numbers of the common species. 

 He believed this was the most northern limit at which the 

 Roseate Tern had been found, on this side of the Atlantic. 

 ; Dr. Cabot also mentioned, that he had observed, this 

 season, abundance of Horse Mackerel {Temnodon saltator) 

 in Beverly harbor, twenty or more at a time. He believed 

 that this fish had not usually been seen in shoals. The ap- 

 pearance presented by their motion through the water, pre- 

 cisely resembled that of the sea-serpent, as described by 

 observers. 



