Mr. J. Gwyn Jeffreys on Mediterranean Mollusca. 65 
the cou condyles; m, a oh ridge; », palato-temporal 
ee nn , & depression, proba ly marking the position of the 
rig 
Fig. 3. View or the anterior portion of the left mandible, exhibiting the 
à teeth and surface-ornamenta tion: a, anterior extremity 
A 4. Three præmaxillary tobti, seen in front, ewe - nlar; gei. 
ud 
Fig, 6. nah bag ee view of the apical proai of pa same, exhi- 
ng the stri 
Fig. 7. Two of the ated variates teeth, considerably enlarged. 
V.—Mediterranean Mollusca. 
By J. Gwyn Jerrreys, F.R.S. 
ALTHOUGH the coasts of the Mediterranean have been dili- 
gently explored by many naturalists during the last half- 
century, the Mollusca from deeper eal are not sufficiently 
known. With the exception of Forbes’s dredgings in the 
JEgean, which reached the extreme limit of 230 fathoms, and 
of the accidental discovery of abyssal life by means of the 
electric telegraph-cable taken up between Cagliari an 
at a depth of from about 1100 to between 1500 and 1600 fa- 
oms, 1 am not aware that any a une yearn of 
n 
dredgings carried on for two years by Mr. M‘Andrew in dif- 
ferent parts of the Mediterranean, and which have been of the 
greatest service to all who are interested in the geographical 
distribution of the Mollusca ; but these dredgings, as recorded, 
did not exceed the depth af fifty fathoms. For the sane 
reason I will not specially refer to the dredgings of Admiral 
Acton, the Marquis de Monterosato, Herr Weinkauff, Mr. 
Hanley, Professor Capellini, the Marquis James Doria, 1 
Susini, Dr. Man ere myself, and others on the coasts of 
Naples, £ Sicily, Algeria, Nice, Spezzia, Corsica, Elba, and 
The kindness ^ my friend Capt. Spratt, R.N., F.R.S. (who 
is so well known to the scientific world, not only i in connexion 
with Tobes. (a exploration, but as the author of an 
admirable work on Crete), and of Capt. Nares, R.N. (the 
commander of H.M.S. ? Newport), enables me to offer the pre- 
sent small contribution towards our knowledge of the Medi- 
terranean Mollusca. "The dredgings of Capt. Spr att were 
made in 1845 and 1846, those of Capt. Nares in 1868 and 
1869. The former may be thus stated :—5Sea of Marmora, 
20 fathoms; east coast of Eubcea, 100 f.; Hydra Channel, 
130 f.; off the south end of Hydra, 250 f; ; and F miles 
Ann. & Mag. N. Hist. Ser. 4, Vol. vi. 
