SUPPLEMENT. 217 



Shetland, 60-80 f. P. Palermo (Segueiiza and Benoit) ! E. 

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



P. 256. — Cerithium metula. Pair Isle (MoUer) ! ; N. of 

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

 (Sars). 



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

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



P. 261. — C. PERYEKSinn. St. Magnus Bay ; Pair Isle (Mol- 

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

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

 in Sicily and Dalmatia. 



P. 264. — 0. tuberculatum. Mr. Dodd found a small speci- 

 men at Ilerm ; and M. Cailliaud records a variety {C. Mediter- 

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



P. 2QQ. — Ceeithiopsis TUBEPvCULAEis. Orkneys (Thomas) I ; 

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

 Christiania — Rhodes ! Dr. Tiberi found specimens of different 

 sizes living with MocUolaria marmorata in the tunic of Ascidia 

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

 ClarMi. Dalmatia (Brusina, as C. hU'meata) ! 



P. 268. — C. Barleei. 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 margaritida, Semper, a 

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



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

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



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 Paroe Isles. 



P. 276.— PuRPTjRA LAPiLLFS. N. of Hebr., 530 f., dead 

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

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

 imhricata. Hayle (Hockin). 



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



VOL. V. L 



