the International Fisheries Exhibition. 119 
shape by the conditions of their peculiar habitat. I more than 
suspect that this so-called species of oyster is merely a variety 
of O. edulis, which was necessarily moulded on the branching 
coral, and therefore grew in the form of a bowl or cup. A 
large tropical Bulimus and a specimen of Helix pomatia are 
perched on a madrepore, as if in their usual association and 
position. 
NETHERLANDS. 
A poor set-out of native shells not properly named, and a 
few shells from Madagascar. 
Norway. 
Mollusca from Tromsé, 69° 40’ N. lat., and therefore far 
within the arctic circle. This is a good collection of fine 
specimens, but of a few species only, including Fusus gracilis, 
var. glaber, F. islandicus, F. Sarsi, Buccinum undatum and 
its varieties parvulum and fragile, B. grenlandicum (if not 
also a variety of the last) and its variety finmarchianum. 
SPAIN. 
An unsatisfactory exhibit; some specimens are wrongly 
named, e.g. “ Teredo navalis” instead of T. norvegica. 
SWEDEN. 
Dr. Malm’s Mollusca from the Gothenburg Museum. An 
old collection, and some specimens wrongly named, e. g. Mya 
Binghami, var. elongata, which is placed with Sazxicava 
rugosa as the young of that species. There are also a few 
shells from Bohusliin, which were contributed by Mr. Oscar 
Dickson, including Sélifer Turtoni of Broderip and Sowerby, 
Pleurophyllidia Loveni of Bergh, and Loligo Forbest of Steen- 
strup. But the most important collection of Mollusca in the 
Exhibition was furnished by Prof. Nordenskjéld, having been 
dredged in the icy or Siberian Sea during his celebrated voyage 
in the ‘ Vega.’ All of these are truly arctic species; and it 
may be desirable to mention a few of them with the recorded 
depths :—ConcHIFERA : Amusstum Hoskynsi, Forbes, 75 
fathoms, very large; Astarte fabula, Reeve, = A. Warhami, 
Hancock, 10 fathoms. GaAstropopa :—Trichotropis Kréyert, 
Philippi, 55 fathoms; 7. crinifera, Leche, 55 fathoms ; Pur- 
pura Freycineti, Middendorff, 0-1 fathom ; Buccinum Tottend, 
Stimpson, var., = B. terra@-nove, Morch, 55 fathoms ; Pleuro- 
toma sp. n., 55 fathoms. As Dr. Leche of Stockholm writes 
me word that he intends to describe the Conchifera only from 
