of British Mollusca . 65 
under Cylichna umbilicata , he writes : — u Var. conidus , LofFo- 
den I., 300 f. (Sars), not var. conulus of Weinkauff, which he 
has since named C. Hoernesi ; this is C. pyramidata of A. 
Adams.” It appears probable from the words “Norwegian 
and Mediterranean ” in the first of these quotations that he 
there used G. pyrcimidata for the shell we now understand as 
Tornatina ovata , Jeffr., whereas in the second he makes 
C. pyramidata synonymous with the shell I have above 
spoken of as Cylichna [Bulla) striatula , Forbes = G. Hoernesi , 
Weink.j 
Genus 2. Volvula, Adams. 
35. Volvula acuminata (Bruguiere). 
Off Berwick [R. Hoivse in Newcastle Museum). This is 
the only instance of its occurrence off the east of England. 
Fam. 3. Scaphandridae. 
Genus 1. Cylichna, Loven. 
36. Cylichna cylindracea (Pennant). 
Var. linearis , Jeffreys. 
37. Cylichna alba (Brown). 
At the time when ‘ British Conchology ’ was published 
the only known British locality for this species was north- 
north-west of Unst, Shetland, where Jeffreys and myself 
dredged it on several occasions. It has since been found 
north-north-west from the Butt of Lewis in 189-530 fathoms 
(‘ Lightning,’ Stats. 12, 13) ; off the west of Ireland in 430- 
1366 fathoms (‘Porcupine,’ 1869, Stat. 23 a, 19) ; near the 
same ground as by the ( Lightning,’ in 530 fathoms (‘ Knight 
Errant,’ Stat. 7). 
Genus 2. Diaphana, Brown, 1833 
= Amphisphyra, Loven, 1846. 
38. Diaphana hyalina (Turton). 
39. Diaphana expansa (Jeffreys). 
40. Diaphana ventrosa (Jeffreys). 
41. Diaphana globosa (Lovdn). 
Utriculus globosus, Jeffreys, Brit. Conch, vol. v. p. 223, pi. cii. fig. 8. 
Diaphana globosa , G. O. Sars, L c. p. 290, pi. xviii. figs. 4 and 3 c. 
Diaphana hgemalis, G. O. Sars, l. c. p. 291, pi. xviii. fig. 4. 
Ann. & Mag . N. Hist. Ser. 6. Vol. vi. 5 
