OA.T^LOaUES 



OF THE 



FAMILIES 



PORCELLAINID/E AND AMPHIPERASID/E, 



Bt S. R. ROBERTS. 



It has been the aim of the writer, in the compilation of these Cata- 

 logues, as far as possible to recognize the services of old authors wher- 

 ever they were binomial. This will meet with some opposition, especially 

 from those who wish to adhere to the rules laid down by certain Associa- 

 tions, which ignore the claims of all Authors prior to Linnaeus. 



The families have been subdivided according to H. and A. Adams; 

 although but little importance can be attached to some of these subdivi- 

 sions ; yet as they serve to lessen the labor in arranging the Catalogues, 

 they are here adopted. Some difficulty has been experienced regarding 

 dates of publication, especially where the monographs were published in 

 parts. As an illustration, Kiener's Monograph was published in this 

 manner, no dates being given to indicate when each part was issued. When 

 these dates are known correctly, some of his species may have priority. 

 Sowerby's Monograph in Conch. Illus. was completed in 1837, and that 

 date has been taken for his species in some cases. 



The writer here returns thanks to Messrs. John G. Anthony, G. W. 

 Tryon, Jr., and others, who have aided him in compiling these Catalogues, 

 and to Mr. John H. Redfield, who has made some valuable additions to 

 the geographical distribution of the species. 



Monographs referred to : 



C. Ic. = Reeve's Conchologia Iconica. 

 C. 111. = Sowerby's Conchological Illustrations. 

 Thes. = Sowerby's Thesaurus Conchyliorum. 

 Coq. Viv. = Kiener's Coquilles Vivantes, &c. 



