THE NAUTILUS. 



111 



1 

 J 



The quaint and marvellous shells of this extremely inter- 

 esting group of molluscoid " worms " are very scarce in col- 

 lections of recent shells. Essentially a class of the past, it is 

 all but extinct, the living forms hardly exceeding a hundred. Eagerly sought by 

 progressive students, our stock of them is constantly changing, but at present we 

 have on hand the following species, -a very representative series : 



Lingula anatina 15 .40 



" hians .15 



" sp. (wet) 50 .75 



Discinisca lamellosa .00 



" l8evis(wet) 20 .80 



Cran ia anomala ( wet ) 



Lacazella meditteranea 



Hemithyris psittacea 



" nigricans? 



Terebratulina caputserpentis.. 

 (unguicula) 



..> 



!.50 



.40 

 .10 .15 



.15 

 -.35 

 -.30 



.75 

 -..50 

 -.00 



.00 



Liothyrina sphenoidea ? 1.00 



Terebratella dorsata ? ( brach. v) .20 



' cruenta 1.50 



" rubicunda .25 



Terebratalia transversa 50 .75 



Laqueus californicus 50 .75 



" rubellus .50 



Magellania flavescens '25 .50 



( Neothyris) lenticularis 50 .75 



" dilatata .50 



Macandrevia cranium .25 



Dallina gray! .40 



Muhlfeldtia truncata .35 



Frenulina sanguinea .25 



Megerliiia lamarckiana .25 



Kraussina rubra .35 



Cistella cuneata (wet) 10 .20 



septentrionalis 1; 



" (wet) 1.: 



japonica 



cancellata? 3.: 



Liothyrina vitrea 4." 



" " (wet) 



I The classification is that of Hall and Clarke. ) .Specimens marked " wet " are 

 carefully preserved in alcohol or formalin. 



Ward's Natural Science Establishment, 



28 TO 40 COLLEGE AVENUE, ROCHESTER, NEW YORK: 



THE DR. JftMES LEWIS COLLECTION. OF MOHAWK. NEW YORK, 



was recently purchased by us and added to our already large stock. Not for 

 many years has a collection containing such valuable suites of Land and Fresh 

 Water Shells been offered to collectors in large or small lots. Dr. Lewis was wel 1 

 known as one of the ablest scientific conchologists in the 'OO's and '70' s. He assist- 

 ed in arranging the Fresh Water Shells in the Smithsonian, Vassar, and Hamil- 

 ton Colleges, State Museum at Albany, and many others. The ablest concholo- 

 gists of his time were his constant correspondents, and many thousand shells in 

 his cabinet were from Isaac Lea. One of his favorites was the Strepomatidse. 

 Nearly all his specimens had been compared with types, so that probably no bet- 

 t er labeled shells are in existence. 



We can furnish to collectors choice suites of any Strepomatid;^. other Fresh 

 Water Univalves, fully 2,000 species of Foreign Land and Fresh Water Shells , 

 and a very attractive lot of Marine, and especially the smaller marine shells- 

 Write us fully what you are collecting or specializing and we will gladly send 

 you a box on examination. Our new system of approval boxes has met with favor 

 in every part of the country. Over one hundred active conchologists are con- 

 stantly selecting from same. 



WEBB'S MM. SCIENCE ESTABLISHMENT, Walter F, WeiA, M'gr,, 



ALBION, NE\V YORK. 



4Sf"Col lections purchased for immediate cash. 



