PLATE IX. 



FIG. 1. Obolus triparilis, n. sp. a Mould of the dorsal valve ; b Longitudinal section 

 of this valve. Both Mag. f . From Assise E. Ib Dugald brook, Escasonie 

 N. S. See p. 136. 



FIG. 2. Obolus Brctonensis a Ventral valve ; b Interior of same ; c Longitudinal 

 section of same ; d Dorsal valve ; e Interior of same ; / Longitudinal 

 section of the two valves. All mag. f . g Portion of the surface enlarged to 

 show sculpture, Mag. ^ ; h a portion further enlarged. Mag. 1 -f. From 

 Assise E. 3d. Dugald brook, Escasonie, N. S. See p. 141. 



FIG. 3. Lingulcpis Greywa a, ventral valve, 6, interior of! the same, c, Longitudinal 

 section of the same d, dorsal valve,- e, mould of the same, /, Longitudinal 

 section of the same. All mag. f. From Assise E. 1 d. Dugald brook, 

 Escasonie, N. S. See p. 126. 



FIG. 4. Hyolithes cf. tenuistriatus (and cf. princcps)a, Tube, from the ventral face b, 

 same from the left side. Mag. \. From Assise E. 2} (a?) Young point, 

 George river, N. S. See p. 83. 



