SUPPLEMENT. 217 



Shetland, 60-80 f. F. Palermo (Seguenza and Benoit) ! E. 

 Loffoden L, 250 f. (Danielssen, /. Sars). 



P. 256. — Cerithitjm metula. Fair Isle (Moller) ! ; N. of 

 Hebr., 170 and 189 f. (C. and T.). E. Loffoden I., 300 f. 

 (Sars). 



P. 258. — C.reticulatem. Orkneys (Thomas) ! F. Through- 

 out Great Britain and Europe. E. Madeira (Watson) ! 



P. 261. — C. PERYEfismr. St. Magnus Bay ; Fair Isle (Mol- 

 ler) ! F. Portrush (A. Bell) ! ; Christiania — Cyprus ! Ex- 

 tremely variable in size ; both the large and small forms occur 

 in Sicily and Dalmatia. 



P. 264. — O. tuberculatum. Mr. Dodd found a small speci- 

 men at Herm ; and M. Cailliaud records a variety (C. Mediter- 

 raneum, Desh.) as living at Pornichet in the Loire-Inferieure. 



P. 266. — Ceeithiopsis tubeeculaeis. Orkneys (Thomas)!; 

 N. of Hebr., 189 f. (C. and T.). F. Portrush (A. Bell)!: 

 Christiania — Rhodes ! Dr. Tiberi found specimens of different 

 sizes living with Modiolaria marmorata in the tunic of Ascidia 

 mentula at Naples. This indicates a parasitic habit. Monstr. 

 CJarlcii. Dalmatia (Brusina, as C. bilineata) ! 



P. 268. — C. Baeleei. The operculum has a very short 

 spire. Wexford coast, 40 f. (Walpole) ! E. Arcachon (La- 

 font) ! ; G. Naples (Tiberi)! ; Sicily (Stefanis) ! 



P. 269. — C. ptjlchella. Spire of the operculum small and 

 resembling a Cristellaria. Mathilda margaritula, Semper, a 

 tertiary fossil of Lapugy in Transylvania, may be this species. 



P. 271. — C. Metaxa. F. Pisa (Manzoni) ; Rhodes (Mus. 

 J. d. PI.) ! E. Dalmatia (Brusina, as C. acicula) ! 



P. 272.— C. cosTULATA. N. of Hebr., 170 and 189 f. (C. 

 and T.). E. Loffoden I., 300 f. (Sars). Not my C. nivea, 

 which I have now ascertained to be a Cerithium ; Carpenter 

 and Thomson dredged a living specimen of it in 550 f. between 

 the Outer Hebrides and the Faroe Isles. 



P. 276. — Purpura lapilltjs. N. of Hebr., 530 f., dead 

 (C. and T.). F. Bohuslan (Thuden) ; New England (Ham- 

 lin, /. Packard). E. Minorca (Ramis, /. Hidalgo). Var. 

 imbricata. Hayle (Hockin). 



P. 279, 1. 9 from top, for " siliceous " r. " chitinous ". 



VOL. V. L 



