510 ADDENDA ET COHRIGENDA. 



Page 251. Ditrema argenteum. 



b-e. Fine specimens (males and pregnant females). Esquimault 

 Harbour. Collected by J. K. Lord, Esq. — Tbese specimens are 

 smaller (8-10 inches) than specimen a. from San Francisco 

 (11 inches), and the maxillary does not extend quite so far 

 backwards as in the latter. 



Page 267. Chromis niloticus. 

 l^m. Fine specimens. Port Natal. From Mr. Th. Ayres's Collection. 

 These specimens do not belong to Ch. mossamhicus or Ch. sparr- 

 nutnni, as we might have been tempted to believe, but they agree in 

 every respect with C%. niloticus. They are caUed " Black-fish " in 

 the colony. 



Page 269. Chromis tristrami. 



Specimen c, from Ashantee, ought to be referred to Chromis guine- 

 ensis (p. 271). 



Page 271. Chromis guineensis. 

 a. Adult. Ashantee.— D. ^. A. |. L. transv. 3/11. 



Note. 



We have given the name of Atypus to an Australian fish (vol. ii. 

 p. 64) ; as this name is preoccupied, we propose that of Atifpiclitliys. 



