358 Rev. Canon Norman — A Month on 



of R. Testce. The lip is considerablj thickened, and sculptured 

 externally with many fine longitudinal striae. I think that 

 there can be little doubt that these two forms are one species. 

 It is possible also that R. suhsoluta is not specifically distinct 

 from them. 



2. Alvania suhsoluta (Aradas). 



1847. Rissoa suhsoluta, Aradas, Mem. di Malac. Sic. vol. iii. p. 21. 

 1853. Rissoa abysdcola, Forbes & Hanley, Hist. Brit. Moll. vol. iii. 



p. 86, pi. Ixxvii. figs. 1, 2, and pi. JJ. tig. 3 (varietatis abyssicola 



iigura bona). 

 1867. Rissoa abyssicola, Jeffreys, Brit. Conch, vol. iii. p. 19, pi. IxaI. 



fig. 9 (figura mala). 

 1878. Alvania abyssicola, G. O. Sars, Moll. reg. arc. Xorv. p. 177, pl. x. 



fig. 7, a-c (formee typicEe optimse figurte). 

 1870. Rissoa abyssicola, Tar. obtusa, Jeifreys, " Mediterranean Mol- 



lusca," Ann. & Mag. Nat. Hist. ser. 4, vol. vi. p. 12 (separate copy). 

 1875. Rissoa ekyantissima and subsoluta, Moaterosato, Nuova Revista 



delle Couch Medit. p. 17. 

 1884. Rissoa subsoluta and R. Tester, var. abyssicola, Jeffreys, Proc. 



Zool. Soc. p. 115, pl. ix. fig. 3. 

 ? 1884. Rissoa deliciosa, id. ibid. p. 121, pl. ix. fig. 7. 

 1884. Actotiia subsoluta, Monterosato, Nomen. gen. e spec, di alcune 



Conch. Medit. p. 61. 



Specimens in my collection are as follows : — 



0. '^Alvim'a eleganti'ssi'ma, Palermo " *, from Marchese di 



Monterosato. — Three specimens. 



b. ^^Actom'a suhsoluta = deliciosa, Palermo," from Monte- 



rosato. — Four specimens. 



c. ^'Rissoa suhsoluta, Aradas, Palermo, very deep," from 



Monterosato. — Two specimens. 



d. Off Batalden, near Floro, Norway, 200 fath. — Two speci- 



mens, A. M. N. 



€. Oster Fiord, near Bergen, 375 fath. — Five specimens, 

 A. M. N. 



/. Off Lervig, Hardanger Fiord, 200 fath. — Five specimens, 

 A. M. N. 



g. Rodberg, Trondhjem Fiord, 250-300 fath. — Twelve speci- 

 mens, A. M. N. 



h. Loch Fyne. — Five specimens, Mr. MacAndrew. 



1. The Kattegat. — Five specimens from the Copenhagen 



Museum. 



a and b (received at different dates) are identical and rather 



* Monterosato subsequently united his A. elegantissima with A. suh- 

 soluta. 



