Mr. J. Gwyn Jeffreys on Mediterranean Mollusca. 69 
Nucula nucleus, L. B. C. ii. 143, and v. 172,*pL 29:12. 
Med. 40-100 f. ; P. 10-1180 f. 
N. tenuis, Ea 'B. C. ii. 151, and v. 172, pl. 29. f. 4. Med. 
6 g. 130-250 f.; P. 15-18 3 f. 
Leda pen Münster. B.C. ii. 15 A and v. 173, pl. 29. f. 5. 
Med. 50-310 f.; Æg. 130 £.; P. 40-1180 f. A valve of 
this species from 310 fathoms is permeated by the same 
tubular organism as the above mentioned valve of Terebra- 
tula vitrea, Some extremely minute shells, which have the 
general appearance of young L. pygm«a, but are Roe 
| oval and rounded at each end, without any slope from 
E. - beak, were in the dredgings from 310 fathoms. They dem 
be the fry of L. pellucida, Ph. (a Calabrian and Bein 
fossil), although in that species the teeth are numerous 
and close-set, Soie in these shells they are very few and 
remote. 
Leda acuminata*, Jeffre 
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ee eem distinct. L. 0-112 25, 
310 f.; P. 370-862 f. Biher known only as 
Sicilian fossil, "Professor Seguenza having kindly sent me 
(— from the neighbourhood of Messina, as L. messa- 
e has not described it, I venture to prefer the 
iumscioriie name which I had Prem to the species when 
I dredged it off the west coast of Ireland to the local name 
propo: sed b im. 
L. commutata, Ph. i. 65 (Nucula striata), and ii. 46 (N. minuta). 
Med. 130 f. 
30-1 00 £.; g.1 
L. pella, L. - Ph. i. n Erap ii. 45 (Nucula emarginata). Med, 
50-100 f.; Marm. 2 
* Pointed, 
