X, 



?. 



WINCKWOETH : . ON BKIIGH 



21 



A proper and suflicieut reference thereforo shouki give tlie voUiui" (2, 7 or 9) and page, 

 adding Suppt. aftcr 2 in tlic casc of Tlicil. 4. Thus : 



Bergh, R. 1S74. f^cmpcr's Ilri.vn, 2, 309-314. . 

 Bergli, R. 1S80. ."Jemycr's iiciscn, 2 Siippl. 21. 

 Bcrgh, R. 1905. Scmpcr's lifi^cn, 9, 69. 

 If further detail is rcquired tlic numbcr of the Heft may be addcd botwoen volume 

 and page : Bergh, R. 1876. Malac. Unt. Sempcrs Beisen, 2, Heft 10, 413. 



The dates of publication, as far as I havc traced them, are giveu below. 

 Up to 1878, the dates are those giveu by Bcrgh in part 14, page xhi ; 

 the dates for the first three parts of volume 7 are given on page 158 of that 

 volume ; the other dates are dates of receipt at the British Museum 

 (Natural Hi.^tory). 



Scmper's Eeiscn, volume 2 — Malacologische Untersuchungen 



t 



\ 



allibrcory 



1898. 



Received at the Brititli Museum, 6 April 1897, 15 Februarj- ISOS and 22 November 



