82 LAMELLIBRANCHIATA. 
Modiolopsis postlineata, F. McCoy, A. M. N. H. ser. 2, vm 
(1851), p. 58, and Contrib. Brit. Pal. (1854), p. 193, and Brit. 
Paleeoz. Foss. (1852), pl. i 1, f. 22, p. 268. Middle Bala; 
Allt-yr-Anker, Mevfod. 
M. solvensis, H. Hicks, Q. J. G. S. xxrx (1873), pl. v, f. 18, p. 50. 
Tremadoc Beds ; Ramsey Island. Presented by Dr H. Hicks. 
Myacites modica (Bean), J. Lycett, Supp. Mon. Moll. Gt. Ool. 
etc. (1863), pl. xli, f. 1, 1 a, p. 83. Cornbrash ; Scarborough. 
Leckenby Collection. 
M. recurvum (Phillips), J. Lycett, Supp. Mon. Moll. Gt. Ool. ete. 
(1863), pl. xxxvi, f. 4, 4 a, p. 81. Cornbrash; Scarborough. 
Leckenby Collection. 
M. sinistra (Agassiz), J. Lycett, Supp. Mon. Moll. Gt. Ool. ete. 
(1863), pl. xxxv, f. 17 a, b, p. 82. Cornbrash; Scarborough. 
Leckenby Collection. 
M. subsidens, G. F. Whidborne, Q. J. G. S. xxxrx (1883), pl. 
xviii, f, 24, 24 a, p. 535. Inferior Oolite; Dundry. Presented 
by the Rev. G. F. Whidborne, M.A. 
Myoconcha implana, G. F. Whidborne, Rep. Brit. Assoc. (1882), 
p. 534, and Q. J. G. S. xxx1x (1883), pl. xviii, f 22, pl. xix, 
f. 5, p. 530. Inferior Oolite; Bradford Abbas. Presented by 
the Rev. G. F. Whidborne. 
Mytilus (Modiola) cuneatus, Sowerby, J. Morris and J. Lycett, 
Mollusca Gt. Ool. part 11 (1853), pl. xiv, £8, p. 151. Mullepore 
Bed; Stainton Dale Cliffs, near Scarborough. Leckenby Collec- 
tion, 
M. (Modiola) leckenbyi, J. Morris and J. Lycett, Mollusca Gt. 
Ool. part ii (1853), pl. xiv, f. 9, p. 131. Millepore Bed ; Stain- 
ton Dale Cliffs, near Scarborough. Leckenby Collection. 
Mytilus minimus, Salter, Cat. (1873), p. 182. Upper Ludlow ; 
Lesmahagow. 
Nucula bivirgata, Sowerby, A. J. Jukes-Browne, Q. J. G. 8. 
XXXI (1875), pl. xv, f. 6, p. 299. Cambridge Greensand ; 
Cambridge. 
N. cornueliana, dOrbigny, J. S. Gardner, Q. J. G. 5S. xi (1884), 
pl. v, f. 5, 6, p. 129. Lower Greensand ; Bennwworth. 
N. levata, v. Ctenodonta levata. 
