IV THE NAUTILUS. 



THE MANUAL OF CQNCHOLOGY. 



I 'Minded l>\ | la- late < ieo. \\". Try on. Jr.. continued under tlie care of the Con- 

 chologica] Section. Academy of Natural Sciences of Philadelphia, by Henry A. 

 Pilsbry,< !onservator. 



The .Manual of ('oiicliology is a ttill\ illii.^tra/i'd monouraphy of recent mol- 

 lii^ks. [ssued iii octavo form, in <|ii;>.rterl v parts. Kadi part coiai)rises (Hior 

 more) paires of letterpress, and !."> to -JO plates. 



Two scries ;>re now in proinvs< : the FIKST SKUI i-:s. Marine Univalves, of 

 which seventeen volumes have appeared, finishing the series as planned by the 

 illustrious founder. ( ifthe SKCONM SKI: i KS, Terrestrial Mollusks, Ten Volumes 

 have been published, completing Helix with index. A few copies of Vol. IX of 

 t his series. ( iuide to the Study of Helices" will be sold separately at the regular 

 subscription price. Separate copies of the [ndex, suitable for the purpose of a 

 < atalogne or < 'heck list, can also be had at -1.IMI each 



The Monography of the Bull mi hi' - been commenced in the tenth and eleven I h 

 \ olnmes. 



The illustrations of the .Manual h;:ve received hiuh commendation, and are 

 fully equal to the best figures of shells published. 



Prices: Plain umcoloredi edition, s:>.0d per part. Colored edition, s~>.(Xl per 

 part. Fine edition i both colored and India-tinted plates i. sx.oo per part. 



Structural a ori Systematic t'onoliolo.v, by (ii-:o. W. TRYON, JR. 



A COMPLETE CONCHOLOGICAL TEXT-BOOK of 1,200 pages, 140 plates, and over 

 'i.-iiHi timires of Genera, Anatomy, etc. Three volumes bound in one. Cloth. 

 Price, sfj.w. 



I-'or I'urt hei- information or descriptive circular, with sample plates of Man- 

 na I. add res,.;. 



S. RAYMOND ROBERTS, Treasurer, 



P. 0. Address, GLEN RIDGE, NEW JERSEY, U. S A. 



An illiisiniic.l CATALOGUE OF JAPANESE MARINE MOLLU^KS, by !'. 

 Stearns and II. A. Pilsbry. Cloth. s'!.(KI; pa]>er, *>.'*). 



MESSRS. SOWERBY & FULTON 



[nvite collectors to write for their new lists of Mollusca. which contain thou- 

 sands of species, representing neai-l.x- all the genera. 



To Curators of American Museums. 



We invite you to apply for estimate for any collections of Mollusca you may 

 be wanting. \Ve can supply such at lowest co-it. 



Exchange or Purchase for Sppcies not in Stock. 



SPECIAL OFFERS-16 Species of Pretty Philippine Tree Snails, post free, 

 $2 00 25 Soecies of PTE ROPODA, nost free, $5.00 



SOWERBY & FULTON, 

 121 Fulham Road, London, S. W., England. 



FOR SALE. 



On account of sickness of proprietor (estab 

 Hshed twenty- five years), a Natural History 

 Store and Curiosity Shop, at 816 Bioadway, 

 New York Citv. 



