Explanation or Plate III. 1 
Figure 1. Nucula Aowlingi McLearn n.sp. Right valve x 1$, Geol. Surv., Can., Mus. No. 5394, 
holotype. 
2. The same specimen. Posterior view of both valves x 1J. 
3. Dicranodonta dowlingi McLearn n. sp. Posterior view of both valves. Geol. Surv., 
Can,, Mus. No. 5395, holotype. 
4. Another view of the same specimen. Right valve, 
5. Another specimen of the same. Mould of interior of left valve. Geol. Surv., Can., 
Mus. No. 5407, paratype. ( 
6. Nemodon mcconnelli McLearn n.sp. Right valve x 2. Geol. Surv., Can., Mus. No. 
5396, holotype. 
7. Inoceramus dowlingi McLearn n.sp. Left valve. Geol. Surv,, Can., Mus. No. 5398, 
holotype. 
8. The same. Left valve. Geol. Surv,, Can., Mus. No. 5399, paratype. 
1 Unless otherwise stated illustrations are natural size. 
