Bolton, New Bvachiopoda and Mollusca. 



Explanation of figures in Plate 5. 



(The lettered numbers are those of the registers of the Manchester Museum, and are 

 painted upon the matrix enclosing the specimens.) 



Fig. i. Discina orbicularis. Ventral valve. Carre Heys, Colne. 



W 466, e coll. Wild. 

 „ 2. ,, ,, Dorsal and ventral valves. AshtonMoss 



Colliery. L 2620, e coll. Cairns. 



3. Aviculopecten Cairnsii. Left valve. River Tame, Dukin- 



field. L 3489, e coll. Cairns. 



4. Right and left valves. Same locality 



and collection as fig. 3. L 3490. 



„ 5. Anthracomya bellula. Conjoint valves. Bonfire Hill, 



Crawshawbooth. L 3491, e coll. 

 Dugdale. 



6. Tellinomya robusta. Conjoint valves seen from above. 



Watergate Colliery. L 3492. (The 

 anterior side of the shell is to the 

 right, the faintly marked area to 

 the left of the umbone being the 

 escutcheon within which is a small 

 well-marked ligament. The anterior 

 lunule is more strongly defined than 

 is indicated by the figure, and bears 

 a few feeble longitudinal ribs.) 



,, 7. „ Same shell as above, viewed from the 



right side. Posterior margin much 

 contracted, partly by abrasion. 



8. „ Seen from the left side, and showing 



a greater development than fig. 7. 

 Watergate Colliery. L 3493. 



„ 8a. Diagrammatic section through original 



of fig. 8. 



„ 9. Naticopsis globularis. Carre Heys, Colne. W 467, 



e coll. Wild. 



„ 10. Raphistoma (?) ornata. Figure of whole shell, built 



up from a series of four incomplete 

 specimens. Bacup, Rossendale. 

 L 3494, e coll. Bolton. 



