422 Annals of the South African Museum, 



careous particles are similar to those of atrd the general appear- 

 ance of the two species, especially in life, is quite unlike. The 

 bright rose-red ventral surface of edulis makes it much the hand- 

 somer of the two, but unfortunately the colour is soon lost in 

 alcohol. 



* HOLOTHURIA AFRICANA. 



Tlieel, 1886. CHALLENGER Holoth., p. 174; pi. VIII, fig. 7. 



Although the type locality for this species is Simon's Bay, 1020 

 fms., it is not in the present collection and I therefore can add 

 nothing to Theel's satisfactory description and ligures. 



HOLOTHURIA CINERASCENS. 



Stichopus (GymnocMrota) cinerascens Brandt, 1835. Prod. Descr. 



Anim., p. 251. 



Holotliuria cinerascens Lampert, 1885. Die Seewalzen, p. 82. 

 HolotJmria pulchella Selenka, 1867. Zeits. f. W. Zool., vol. XVII, 

 p. 329; pi. XVIII, figs. 61, 62. 



It is a pity to have to abandon Selenka's familiar name for the 

 older and less euphonious one of Brandt but Ludwig's demonstration 

 of the identity to the two leaves us no choice. Ludwig's Revision 

 of Brand's holothurian names (1881, Zeits. f. w. Zool.. vol. XXXV, 

 ]. 575) was one of the most valuable contributions to the study of 

 holothurian taxonomy ever made, and it is unfortunate that neither 

 he nor Theel adopted the resulting changes in nomenclature. 



This species, previously known from Mozambique and widely 

 distributed in the Indo-Pacific region, is represented in the present 

 collection by two specimens. The larger is either from Mozambique 

 or Natal, while the smaller, which is in poor condition, is said to 

 be from Durban, Natal. The species therefore evidently ranges as 

 far south as Durban, but is apparently not common as Mr. Barnard 

 did not meet with it at the intermediate locality of Delagoa Bay. 



HOLOTHURIA DIFFICILIS. 

 Semper, 1868. Holothurien, Heft III, p. 92; pi. XXX, fig. 21. 



A single specimen of this Indo-Pacific species is in the collection 

 of the South African Museum. It bears the label: Mozambiqiie. 

 In rock pools, freely exposed. Light brown. Nov. 1912. K. H. 

 Barnard. Although known from Mauritius, this species was not 



