Marine Dredgings and other Natural History Materials. 171 
lyra, Lepadogaster Decandoli and Lepadogaster bimaculatus, 
Motella cimbria, Hippoglossoides limandoides, Rhombus (Zeu- 
gopterus) norvegicus, Pleuronectes cynoglossus, Zeugopterus 
punctatus, and Neroplius equoreus. 
Of these, perhaps the rarest and most interesting species 
is Lhombus (Zeugopterus) norvegicus, Giinther. This is one 
of the more recent additions to the British fish-fauna. There 
were two specimens of this species in the collection, and both 
were of small size. One of the specimens was from Loch Braca- 
dale, Skye, and measured 1°87 inch (47°5 mm.); the other 
was obtained in the Gairloch, West Ross-shire, and measured 
2°3 inches (58:0 mm.). Rhombus norvegicus is described and 
figured by Dr Giinther in vol. xv. of the Proceedings of the Royal 
Society of Edinburgh. There is also an interesting note on the 
same species, accompanied by a very good ficure of an East 
Coast specimen, by Professor M‘Intosh, St Andrews, in part iii. 
of the Z’welfth Annual Report of the Fishery Board for Scotland, 
MOLLUSCA. 
Of the 96 species of Mollusca obtained in the collection, 
only a small number are of special interest; the others are 
all more or less common and generally distributed. A large 
proportion of the species are also represented by only one, 
or at most by a few specimens each; while, on the other 
hand, and in contrast to these, there are a few species that 
are represented by a considerable number of specimens. For 
example, T'rochus zizyphinus (or Zizyphinus zizyphinus, as it 
is named in the Table of Distribution) was represented by at 
least five dozen specimens, most of them, however, young. 
Lima elliptica is another species that was numerously repre- 
sented ; so also were Pecten pes-lutraw (Pecten septemradiatus), 
Nucula nucleus, Leda minuta, Corbula gibba, and Astarte 
sulcata, but these were exceptional cases. 
Among the Mollusca contained in the collection that 
appear to be of more or less interest, mention may be made 
of the following :—Among univalves, Philine scabra, a small 
but pretty shell, that has the outside covered with micro- 
scopic sculpture resembling a succession of chain-links; 
Murex erinaceus, a somewhat rare Scottish shell, and seldom 
obtained living; Zrophon barvicensis, a rare and pretty 
