130 



7-8 rotundatis, profunde discretis, simplicibus vel liris volventi- 

 bus et costis longitudinalibus varie ornatis et clathratis : apertura 

 ovata ; labro continue, simplici, anfractum penultimum vix atti- 

 gente. Long, (exempli maximi) -^^ ; lat. -j^ poll. 



From the Colorado Desert (Gran Jornada) Dr. T. H. Webb ; 

 W. P. Blake. 



Peculiar from its large size, and slender form, though differing 

 greatly in its relative proportions. It differs from all others, in 

 being variously sculptured with revolving ridges and longitudinal 

 folds, like most Melanire. 



Amnicola longinqua. Testa parva, elongato-ovata, glabra ; 

 apice obtuso ; anfract. 5 rotundatis ; sutura profunda : apertura 

 elliptica, postice rotundata ; columella valde arcuata, sub-per- 

 forata. Long. ^ ; lat. yV poll. 



Found in the Colorado Desert (Cienaga Grande) by W. P. 

 Blake. 



In form, it is much like A. Cincinnatiensis, Hald., or like 

 A. galbana, or like miniature specimens of Faludina ponder osa. 

 It has a bleached or chalky color, probably from exposure, like 

 the other species found on the Cienaga Grande ; a region which 

 is immersed a portion of the time, and dry the remainder, and 

 was once, apparently, an extensive marsh, or shallow lake. 



Dr. Gould observed that certain modes of sculpture of 

 shells obtain in certain regions of the globe, and often serve 

 to a practised eye to determine their locality. The Helices 

 here described have the indented surface so usual in Cali- 

 fornia and Oregon species. 



DONATIONS TO THE MUSEUM. 



October 4th, A specimen of Gold Ore, from Bridgewater, Vt., and a speci- 

 men of Lead Ore; by Rev, Theodore Pai-ker, Several joints of the Basaltic 

 columns of the Giant's Causeway; by Mr. Henry B. Stanwood. A mass of 

 Quartz Crystals ; by Mr. C, R. Thayer. 



October 18th, A specimen of Short-eared Owl; by Mr. Thomas H. Hinckley, 

 of Milton. A specimen of Cannelton Coal, and a specimen of Coral from San 

 Juan d'Ulloa; by Mr. T, J. Whittemore. 



November 1st, A specimen of rock, bearing dendiitic markings, from Dor- 



