128 
with the intervening valleys roughened by oblique finer stride, 
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. It. 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 Littorinidie. As the specimen now figured 
favours this view, it is so assigned. 
Cyclonema lilydalensis, sp. nov. 
(PI. xix., fig. 3.) 
Sp. Char. — Shell with the general characters of the preceding 
species but the upper whorl 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 vaileys. The oblique decussating striae are finer and 
less distinct. 
Ohs. — This is either a distinct species, or a very well marked 
variety. I am inclined to the former opinion, fortified by that 
of my colleague Mr. C. Hedley, F.L.S. In form and character of 
the spiral sculpture C. lilydalensis resembles C. Guilleri , CEhlertJ 
from the Devonian of Ebray, France, and equally so in the last 
named character C . zonatum , Lindstrom,g from the Wenlock 
rocks of Gotland. 
Family PLEUROTOMARiimE. 
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 ruga?, 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, 188 i, p. 178, 1. 18, f. 43, 44. 
y See Fischer’s Man. Conchyl. et de Pal. Conchyl., 1887, p. 851. 
