128 



with the intervening valleys roughened by oblique finer strise, 

 passing from before backwards. The peristome is round, sharp 

 at the edge, and bevelled inwards. The columellar margin is 

 somewhat flattened, and a decided callosity is present. 



Prof. R. Tate writes me as follows regarding this shell : — " The 

 shell is imperforate, and the columella is large and medially 

 depressed— it is related to Littorina, and not to Turbo." Dr. 

 Paul Fisher,* describes Cyclonema as imperforate, or slightly 

 umbilicate ; on the other hand Mr. G. W. Tryon, Junr.,f places 

 Cyclonema in the Litton nida\ As the specimen now figured 

 favours this view, it is so assigned. 



Cyclonema lilydalensis, sj'). nov. 



(PI. xix., fig. 3.) 



Sp. Char. — Shell with the general character's of the preceding 

 species but the upper wliorl smaller in proportion to the size of the 

 body whorl, with a much larger number, and finer spiral ridges, 

 their rounded outline, and a more channeled appearance to the 

 intervening valleys. The oblique decussating strise are finer and 

 less distinct. 



Obs. — This is either a distinct species, or a vei"y well mai-ked 

 variety. 1 am inclined to the former opinion, fortified by that 

 of my colleague Mr. C. Hedley, F.L.S. In form and character of 

 the s^jiral sculpture C. lilydalensis resembles C. (hiiUeri, Q^hlerti 

 from the Devonian of Ebray, France, and equally so in the last 

 named character C. zonatum, Lindstrom,>5 from the Wenlock 

 rocks of Gotland. 



Family PlrurotomariiDvE. 



Genus Phanerotrema, Fischer, 1885.|| 



Phanerotrema australis, sp. 'nov. 



(PI. xix., figs. 4 and 5.) 



Sp. Char. — Shell rhomboid-ovate, spire short, whorls four, the 

 upper small, the last or body whorl inflated ; sutures channeled ; 

 band wide, flattened, bordered by fine keels, and ornamented with 

 equidistant backwardly-concave rugye, on the upper whorls just 

 above the suture, and on the body whorl almost median in position, 



* Man. Conchyl. et de Pal. Oonchyl., 1887, p. 814. 



t Struct, and Syst. Cohnchology. 1883, II., p. 241. 



X Faune du Calcaire d'Erbray, 1889, p. 220, t. 15, f. 10. 



§ Sil. Gastropoda and Pfceropoda of Gotland, ISSi, p. 178, t. 18, f. 43, 44. 



y See Fischer's Man. Conchyl. et de Pal. Coachyl., 1887, p. 851. 



