ACADEMY OF SCIENCES. ' 49 



From A. W. Saxe, borings from artesian well at Santa Clara. 

 From Capt. Thos. W. Williams of whale ship Florence, eyes of 

 the Balcsna Mysticetus and B. Sibbaldius. From F. Gruber, speci- 

 mens of barred owl (Syrniiim nebuloseum) mottled owl (Scops 

 Asio), and Carracara eagle (Polyborus thaurus). From Henry 

 Edwards, Dyadophis mirabilis. From Col. Geo. E. Gray the 

 following mollusca, Anodonta Galiforniensis, Physa humerosa, 

 Tyronia 6'^///i/v/ft(Stmp.), and T. protect. From Henry Hemphill, 

 specimens of new species of brackish water mollusk, Paludinella 

 Neivcombiana, with descriptions. Also Alexia setifer from Kureka, 

 H. B. , a shell forma also on China, but possibly introduced on 

 this Coast by the Chinese. 



Description of a New California Mollusk. 



BY HENRY HEMPHILL. , 



PaludbipJla Newcombiana. Hemphill. 



Shell thin, turbinate with four or five rounded whorls; apex sub-acute, last 

 whorl somewhat inflated, subrimate, with or without three or four longitud- 

 inal brown bands; aperture ovate, outer lip thin, inner lip appressed to the 

 columella and somewhat thickened; suture deep; epidermis greenish. 



Operculum with nucleus sub-central with 2% whorls. 



Length of largest specimen, % inch. 



Breadth of largest specimen, -^ inch. 



Habitat, Humboldt Bay, California. 



I found this shell cpiite abundant on the Salt Marshes surrounding Hum- 

 boldt Bay, California, associated with Alexia setifer Coop., and Assiminea Cal 

 ifornica Coop., both of which are also abundant. f 



I take great pleasure in naming this species after my old friend Dr. W. 

 Newcomb, well-known to the Scientific world, to whom I am much indebted 

 for aid in my conchological pursuits. 



W. N. Lockington read a paper on the anatomy and classifica- 

 rion of Eehni or sea urchins. 



Dr. Kellogg described a new species of the order Compositse, 

 which he named Brickellia multiflora: * 



Brickelia multiflora. 



BY DR. A. KELLOGG. 



Si cm 1 — 2 feet, woody, perennial, white, striated, erect; heads very small, 

 (about five lines long,) 3 — 4-flowered, compound leafy racemes panniculately 



Proc. Cal. Acad. Sol, Vol. VI.— 4. 



