and page: 
 WINGKWORTH:, 
ON BERGH 21 
A proper and suflicient reference therefore should give the volume (2, 7 or9)and page, 
adding Suppl. after 2 in the case of Theil. 4. Thus: 
Bergh, R. 1874. Semper's Reisen, 2, 309-314. 
Bergh, R. 1880. Semper’s Reisen, 9% Suppl. 21. 
Bergh, R. 1905. Semper’s Reisen, 9, 69. 
If further detail is required the number of the Heft may be added between are 
Bergh, R. 1876. Malac. Unt. Semper’s Reisen, 2, Heft 10, 413. 
Fr. (Natural History). 
The dates of publication, as far as I have traced them, are given below. 
Up to 1878, the dates are those given by Bergh in part 14, page xl ; 
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 
Semper’s Reisen, volume 2-_Malacologische Untersuchungen 
Hs date part pages plates contents 
Br z 20 Feb. 1870 1 1-30 1- 8 Oratena ... Flabellina. 
. 10 July 1871 2 49-118 9-16 Phyllobranchus. Cyerce. 
ee. 5 8May 18572 3 137-176 17-20 Stliger. Plakobranchus. 
* 15 Dec. 1872 _ 4 177-203 21-24 Elysiadae. 
250ct. 1973 5 205-246 25-31 Irmapontia. Phylliroe. Acura. 
10 June 1874 6 247-285 32-35 Pleurophyllidia ... Pleuroleura. 
21 Sep. 1874 7 287-314 36-39 Bornella. Hero. *- 
10 Mar. 1875 8 315-343 40-45 Scyllaea. 
30 Sep. 1875 9 345-376 46-48 Tethys. Melibe. 
4May 1876 10 377-427 49-53 Phyllidia ... Kentrodoris. 
28 Apr. 1877 11 429-494 54-57 Orodoris ... Chromodoris. 
15 Dec. 1877 12 495-546 58-61 Platydoris ... Trippa. 
8 July 1878 13 547-601 62-65 Hexabranchus ... Fracassa. 
603-645 . 66-68 Lamellidoris .. . Asleronotus. 
23 Dec. 1878 14 1-Ji — Uebersicht, Register, u.s.w. 
; 3Dec. 1884 15 647-754 69-76 Chromodoris ... Marionia. 
; 2Aug. 1888 16,i 755-814 77-81 Nud. Mauritius. 
! 27 Mar. 1889 16,11 815-872 82-84 Nud. Mauritius. 
9 Apr. 1890 17 873-991 85-89 Nud. Sunda-Meeres, u.s.w. 
22 July 1892 18 995-1168 -—- System, Register. 
Supplement to volume 2 
1850 1 1-78 A-F Nachträge. 
1831° 2 79-128 _G-L Nachträge. 
19 May 1886 3 131-225 M-R Marseniaden. 
26 July 1887 4 227-289 S-Z, #6 Marseniaden. 
h Semper’s Reisen, volume ?—Malacologische Untersuchungen 
* Mar. 1897 ° 1 1-51 1-4 Pleurobranchaca. 
* Dec. 1897 ° 2 53-15 5-8 Oscaniopsis ... Oscaniella. 
* Nov. 1898 3_ 117-158 9-12 Pleurobranchus. 
27 Mar. 1900 4 159-208 13-16 Haminaea....Plakobranchus. 
29 Jan. 1901 5 209-256 17-20 Bullacea. 
15 Oct. 1901 6 257-312 21-24 Bullacea. 
7 Oct. 1902 7 313-382 25-29 Acteon ... Oscaniella. 
* Received at the British Museum, 6 April 1897, 15 February 1898 and 22 November 
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