94 GASTEROPODA. 
Actzonina fasciata, J. Lycett, Supp. Mon. Moll. Gt. Ool. ete. 
(1863), pl. xliv, £15, p.107. Forest Marble; Laycock. Walton 
Collection. 
A. humeralis (Phillips), W. H. Hudleston, G. M. dec. 3, 11 (1885), 
p. 202. Dogger Series; Blue Wyke. Leckenby Collection. 
A. luidi (Lhwyd), J. Lycett, Supp. Mon. Moll. Gt. Ool. ete. (1863), 
pl. xli, f 18, 18 a, b, c, p. 106. Forest Marble ; Laycock. 
Walton Collection. 
A. oliveformis (Dunker), J. Lycett, Supp. Mon. Moll. Gt. Ool. 
etc. (1863), pl. xh, f. 4,4 a. Forest Marble ; Laycock. Walton 
Collection. 
A. scarburgensis, J. Lycett, Supp. Mon. Moll. Gt. Ool. ete. (1863), 
pl. xxxi, f. 13, 13 a, p. 28. Cornbrash ; Scarborough. Leckenby 
Collection. 
Another specimen, ventricose variety, W. H. Hudleston, 
G. M. dec. 3, 11 (1885), p. 204. Cornbrash ; Scarborough. 
Leckenby Collection. 
A. suessea, J. Lycett, Supp. Mon. Moll. Gt. Ool. ete. (1863), 
pl. xlv, f 29, p. 107. Forest Marble; Laycock. Walton 
Collection. 
A. wiltonensis, J. Lycett, Supp. Mon. Moll. Gt. Ool. etc. (1865), 
pl. xlv, f. 25, p. 107. Forest Marble ; Laycock. Walton Col- 
lection. 
Alaria arenosa, W. H. Hudleston, G. M. dec. 3, 1 (1884), pl. vu, 
f. 7, p. 198, and Brit. Jurass. Gasterop. Inf. Ool. (1888), pl. iv, 
f.1, p. 110. Dogger Sands; Blue Wyke. Leckenby Collection. 
A. bispinosa (Phillips), W. H. Hudleston, G. M. dec. 2, vil 
(1880), pl. xvii, f. 6 ¢, p. 533. Lower Calcareous Grit ; Cayton 
Bay. ULeckenby Collection. 
A. bispinosa (Phillips) var. elegans, W. H. Hudleston, G. M. dec. 
3, I (1884), pl. vi, f. 8,8 a, p. 152. Cornbrash ; Scarborough. 
Leckenby Collection. 
A. bispinosa (Phillips) var. pinguis, W. H. Hudleston, G. M. 
dec. 3, I (1884), pl. vi, £. 9,9 a, 10, 10 a, pp. 152—3. Kella- 
ways Rock ; Scarborough. Leckenby Collection. 
A. hamus (Deslongchamps) var. phillipsi (d’Orbigny), W. H. 
