MARSHALL: ADDITIONS TO 'BRITISH CONCHOLOGV.' 249 



species more than twenty years ago in the little island of 

 Herm, in company with C. cancellatus, but did not note 

 its specific difference until Mr. Duprey made it known. I 

 subsequently found it in Guernsey and Jersey, and in one 

 or two places in S. Devon. It is gregarious, and I have 

 taken as many as thirteen under one stone, besides young. 

 It is not rare at Guernsey and Jersey, where it seems to 

 aff'ect certain limited spots, and where one or two may be 

 found under almost every stone. The animal is flesh 

 pink, not blood red as stated by Jeffreys, and they attach 

 themselves very slightly underneath stones. The plates 

 are very thin and brittle. 



Tectura testudinalis var. pallida Verk. Colour whiti.-h, 

 except the centre or dorsal scar, which is reddish brown. 

 Occurs sparingly with the type. 



Flssurella graeca var. gibba Jeff". Named by Jeffreys in 

 his Appendix, and figured but not described. It is smaller, 

 thicker, more tumid, higher proportionately, the sculpture 

 is finer and more equalised, and it is less expanded behind, 

 giving the shell a more oblong appearance. Guernsey 

 and Herm. 



Calyptrsea chinensis var. spirata Nardo. Smaller and 

 more conical, with an acute apex. I have dredged this 

 off Portland Breakwater in eleven fathoms, where it is not 

 uncommon, and it doubtless occurs in other places. It 

 derives its peculiar form by adhering and shaping itself to 

 the whorls of Turiitella ferebra. Dr. Jeffreys, in the 

 'Lightning' Report, gives this name to a variety of C/epi- 

 dida unguifomiis, but Monterosato and others make it a 

 variety of this species. 



Cyclostrema millepunctatum Friele. (See'Conchologist,' 

 vol. ii., no. 6, in which Dr. Chaster records the discovery of 

 two specimens from the Isle of Man). Dr. Chaster has 

 subsequently dredged three more specimens at Oban, and 

 on sending me an example I recognised it as a shell I had 



