PLAT HSV 
Figs. 1—5.—Naiadites carinata. A series of casts showing the muscle-scars 
and line of the mantle, and the variation of contour. From the roof of the Hard 
Mine Coal, Adderley Green, North Staffordshire. My Collection. (Page 138.) 
Figs. 4 and 5.—Naiadites carinata. Testiferous examples from the same 
locality. My Collection. (Page 138.) 
Figs 7—9.—Naiadites carinata. Casts from the Stanley Main Seam, 
Wakefield. My Collection. (Page 138.) 
Figs. 10, 11, and 15.—Naiadites carinata. Young examples from the roof of 
the Hard Mine Coal, Adderley Green, North Staffordshire. My Collection. 
(Page 138.) 
Fig. 12.—Naiadites carinata. An obese form from the same locality. My 
Collection. (Page 138.) 
Figs. 13, 14.—Naiadites carinata. Two views of a very obese form showing 
the much-wrinkled periostracum. Same locality. My Collection. (Page 138.) 
Fig. 15.—Naiadites carinata. A testiferous specimen of moderate growth. 
Same locality. My Collection. (Page 138.) 
Fig. 16.—Naiadites carinata. An aberrant form from the same locality. In 
the Collection of John Ward, Esq., F.G.S., of Longton. (Page 138.) 
Fig. 17.—Naiadites quadrata. A large compressed form from the roof, Hard 
Mine Coal, North Staffordshire. My Collection. (Page 140.) 
Figs. 18 and 19.—Naiadites quadrata. Crushed examples from the Burnwood 
Tronstone, Fenton. My Collection. The artist has drawn this shell with its 
anterior side uppermost. (Page 140.) 
Fig. 20.—Naiadites quadrata. A crushed testiferous example from above the 
Woodhead Coal of Froghall. My Collection. (Page 140.) 
Figs. 21, 283—25.—Naiadites quadrata. Uncrushed examples from the roof of 
the Hard Mine Coal, Adderley Green, North Staffordshire. My Collection. 
(Page 14.0.) 
Fig. 22.—Naiadites elongata. From the Ironstone Band in the Middle Coal- 
measures of the Lancashire Coal-field, Prestolee. (Page 142.) 
Figs. 26—35.— Naiadites elongata. A series from the Knowles Ironstone of 
Fenton Park, North Staffordshire, figs. 31 and 32 being the type forms. 
(Page 142.) 
