206 



This shell, with several others from the Pacific Islands, forms 

 a group characterized by their slender, elevated'form, and the rib 

 which circumscribes the umbilical region. It is more deeply 

 and uniformly colored than C. ruiens, Quoy, which is also 

 smaller, thinner, and has a much larger umbilicus. 



Cyclostoma terebrale. Testa parva, turrita, acuminata, 

 flavida vel dilute cornea, laevigata, umbilico rimato circumvallato 

 perforata : spira elevata, acuta, anfr. 6-8 convexiusculis, antice 

 sub-angulatis, sesc partim oblegentibus ; sutura impressa ; aper- 

 tura sub-rotunda, postice angularis, campanulata ; perislomate 

 simplici, anfractui penultimo laie adnato. Lat. y^jj, alt. |- poll. 

 Hab. Taheiti and Eimeo. 



Distinguished from allied species by its acuminated spire, an- 

 gular, imbricated whorls and expanded aperture. It bears a 

 general resemblance to Pupafallax, Say. 



Cyclostoma vallatum. Testa parva, solida, elongato-conica, 

 lucida, fusco-cornea : spira anfr. 6 convexis, sub-angulatis, ulti- 

 mo costa valida umbilicnm ambiente munito ; sutura profunda : 

 apertura oblique ovata ; peristomate continuo, simplici, campan- 

 ulato. Lat. ^, alt. ^ poll. Hah. Tongataboo. 



Cyclostoma scitulum. Testa parva, elongato-conica, tenuis, 

 rufo-cornea, striis incrementi tenuibus solum insculpta, arete 

 umbilicata : spira elevata, anfr. 6-7 rotundatis, supernis sub- 

 angulatis ; sutura profunda : apertura rotundato-ovata, parva, 

 trientem longltudinis adequans; peristomate simplici, pallido. 

 Long, -i, lat. y^jj poll. Hab. Taheiti and Eimeo, Manua. 



Almost exactly like Amnicola Sayana^ Anth. It is larger 

 and more ventricose than C. vallatum, and is distinguished from 

 C. terebrale by its less slender form and unexpanded lip. 



Dr. Cabot stated that two specimens of the Cinereous 

 Owl had been procured lately, by Prof. Agassiz. One was 

 shot in Vermont, the other in Cambridge. 



Mr. S. L. Bigelow read a paper on the Trout of Monad- 

 nock Pond,; giving details of their habits, as observed by 

 himself, and anecdotes of the different modes of capture, &-c. 



Dr. Storer submitted the following Resolutions, which 



