TESTACEOUS MOLLUSCA. 107 
To the list of 1886 we are enabled to add 37 species 
(marked by asterisks in the following pages), of which the 
Spirula is a pelagic cephalopod, accidentally drifted to 
our shores. ‘The 9 species enclosed in square brackets 
are for various reasons doubtful. Five of them, viz., 
Pinna rudis, Trochus lineatus, Odostomia conoidea, O. 
pusilla, and Cerithiopsis tubercularis, may quite possibly 
occur but require confirmation: Donax trunculus is a 
certain error in Rep. I and should be expunged, the speci- 
mens being referable to D. vittatus: Aplysia depilans is 
an almost equally certain error: Fusus islandicus of Forbes 
and C. H. Brown= F. gracilis, DaC.; while there is much 
reason to believe that Cardiwm echinatum was mistaken 
for C. aculeatum by Forbes in his ‘‘ Malacologia Monensis.”’ 
The following should be added to the bibliographical 
references on p. 247 of Rep. I. 
Forbes and Hanley’s ‘‘ History of Brit. Mollusca’’ (1858). 
Dr. J. G. Jeffrey’s ‘‘ Brit. Conchology”’ 5 vols. (1868). 
Thos. Pennant’s ‘Brit. Zoology” vol. TV (1777). 
Chas. H. Brown’s Mollusca in Dr. Nichol’s “ Southport,”’ 
3rd edition (1883). 
Rev. Carleton Greene’s ‘‘ Marine Moll. of N. Wales”’ 
in ‘‘ The Conchologist”’ vol, I, No. 1. 
B. Tomlin’s ‘‘ Notes on N. Wales Mollusca ’”’ in ‘‘ Quar- 
terly Journal of Conchology,” vol. VII, No. 1 Jany.., 
1892), also containing some corrections of Rev. C. 
Greene’s paper. _ 
Dr. G. W. Chaster’s ‘‘ Mollusca of Southport and Dis- 
trict’ in Rep. I of Southport Soc. Nat. Sc.. (1892). 
