Iv PREFACE. 



" You have many forms not found by Dunker or previous observ- 

 ers. * * * A number of your bivalves are probably new. The 

 Scalpellum you sent is a new form which I shall name S. Stearnsii 

 with your permission. It is a very distinct species, more nearly allied 

 to the fossil S. Pf eifferi Weithof er of the Vienna Basin (Miocene) 

 than to any living species. * * * 



" Of the Brachiopoda sent, two are new species, and one of them I 

 propose to name Terebratella Stearnsii." 



In accordance, therefore, with Prof. Pilsbry's suggestion, I publish 

 this list, which contains all the species obtained by me, over half of 

 which were so rare and found in such limited numbers and at such 

 long intervals that they are retained in my private cabinet; of the 

 others I have abundance for exchange and for sale. 



There are in the collection 72 named species not found in Dunker; 

 32 species remain as yet undetermined, many of which will prob- 

 ably be found to be new to science. In Rotella, Tapes, Cytheria, 

 etc., are many beautiful color varieties which I believe have not been 

 before recorded. 



Preliminary descriptions of a number of the new species collected 

 have been published in The Nautilus for December, 1890, and Jan- 

 uary, 1891. An illustrated paper on the Brachiopoda, by Wm. H. 

 Dall and H. A. Pilsbry, will appear in the Proceedings of the Acad- 

 emy of Natural Sciences of Philadelphia, 1891; and another paper by 

 H. A. Pilsbry, in the same Proceedings, will describe new Gastropoda 



and Pelecypoda. 



FREDERICK STEARNS. 



