574 Annals of the South African Museum. 



of Lamarck's position, not giving any reference to the page 

 and misquoting the words of Lamarck's paper. The French 

 author did not name the species " Tuhicinella major et minus 

 as Darwin states. On page 463 he records Tubicinella 

 {major) striata and Tuhicinella {minor) striata, with the 

 explanation that they are perhaps varieties one of the other, 

 though he suspects that they are two species. It is clear 

 that the parenthetical words major and minor were introduced 

 only for the sake of distinguishing what he considered to be at 

 least two varieties, and that he was unwilling to apply more 

 than one specific name, while the specific distinctness was still 

 doubtful. This modesty does not warrant our despoiling him 

 of the one specific name which he did give, and of which 

 Darwin makes no mention. The doubt expressed in The 

 Balanidae as to the exact date of Shaw's L. trachealis has been 

 solved by Mr. Sherborn, who explains that the plates 685-708 in 

 vol. xvii. of the Naturalist's Miscellany were published in 1805, 

 but plates 709-732 in 1806. For specimens crowded together 

 on a whale harpooned in Table Bay, Krauss {loc. cit.) uses 

 Lamarck's later name for this species, but gives a refer- 

 ence to Lamarck, Ann. du Mus., vol. i., p. 481, pi. 30, fig. 1. 



Gen. CHTHAMALUS, Eanzani. 



1820. Chthamalus, Eanzani, Memorie di Storia Naturale, Deca 



prima, p. 27. 

 1854. Chthamalus, Darwin, The Balanidae, Eay Soc, p. 447. 



Chthamalus dentatus, Krauss. 



1848. Chthamalus dentatus, Krauss, Die Siidafrikanischen Mol- 

 lusken, p. 135, pi. 6, fig. 27. 

 In Algoa Bay ; frequent on the rocks. 

 1854. C. cl, Darwin, The Balanidge, Eay Soc, p. 463, pi. 18, 

 figs. 3a-Sc. 

 Darwin observes that he has united two varieties consider- 

 ably different in external aspect, but connected by inter- 

 mediate forms. He says: "I have seen both varieties from 

 Natal, and both from the west coast of Africa." 



Gen. OCTOMEEIS, Sowerby. 



1825. Octomeris, G. B. Sowerby, Zoological Journal, vol. ii., p. 244. 

 1854. 0., Darwin, The Balanidee, Eay Soc, p. 482. 



