THE NAUTILUS. 93 



Mr. Geo. J. Streator, Garretsville, Ohio, writes : " I shall be glad 

 to donate to the U. S. collection some of the best shells of this part 

 of Ohio." 



Mr. Geo. W. Webster, Lake Helen, Florida writes: " INIyself and 

 son shall be glad to donate exanijoles to the U. S. collection. We 

 are much interested in the subject." 



These are but samples of the letters which are being constantly- 

 received. In sending specimens, members should avoid duplicating 

 species already in the collection. None but the finest kind of spec- 

 imens should be sent. 



As the shells are received they are examined, prej)ared for mount- 

 ing, named and then mounted upon cards, which tit into neat trays. 

 Special attention is paid to the labelling, each species having the 

 exact name and locality and name and address of the donor, thus : 



Haliotis corrugata, Gray, 



Catalina Id., Cal. 

 G. W. Lichtenthaler, Bloomington, 111., 1890. 



Fossil species are placed with living species of the same genus, so 

 that ready comparisons may be made between them. 



Donations to United States Collection. 



Since last announcement the following have been mounted and 

 placed in the collection. The numbers attached to the names desig- 

 nate the trays. [Want of space in this number, compels us to defer 

 part of the list until next month.] 



G. W. Lichtenthaler, Bloomington, 111. — 



4.5, Purpura crispata, Chemn., Puget Sound, Wash.; 46, Pur- 

 pura saxicola, Val., ^Monterey, Cal.; 80, Puqxira canalicula- 

 tum. Duel., Tillamook Bay, Oreg. ; 79, Buccinum cj^aneum, 

 Brug., Alaska ; 60, Siphonalia Kellettii, Forbes, Santa Barbara, 

 Cal. ; 59, Chrysodomus dirus, Reeve, Alaska ; 48, Xassa perpin- 

 guis. Hinds, Ban Pedro, Cal. ; 68, Amphissa corrugata. Reeve, 

 Puget Sd., AVash. ; 78,Crucibulum spinosum, Sby., San Diego, 

 Cal. ; 51, Crepidula adunca, Sby., San Diego, Cal. ; 49, Verrae- 

 tus squamigerus. Cooper, San Diego, Cal. ; 86, Littorina scutu- 

 lata, Gould, San Luis Obispo, Cal. ; 85, Littorina Sitchana, 



