146 
Just previous to leaving the field. Dr. R. W. Ells, ex-president of 
our club, visited Rockland and the quarries adjoining. When at Clarence 
Creek, one and a half miles below Rockland, Ont., he made quite an 
extensive collection of fossils which the writer has examined only cursorily 
and the following forms are included in it : 
Fossils Collected by Dr. R. W. EUs at Clarence Creek, near Rockland, 
Out., Sept., 1893. 
1. Crinoidal fragments. 
2. Stictopora acuta, Hall. 
3. Prasopora Selwyni, Nicholson. 
4. ? Monotrypella sp. 
5. Discina or Trematis sp. 
6. Crania sp. cf. C. sp. 
7. Lingula quadrala, Eichwald. 
S. Leptsena sericea. Sowerby. 
y. Rafinesquina alternata, Conrad. 
10. Streptorhynchus filitextum, Hall, 
11. Orthis testudinaria, Dalman. 
12. " pectinella, Conrad. 
3r 
14. 
sp. (? N. sp.) 
vel Anazyga sp. 
15. Platystrophia bifofata, v. lynx, Eich. 
16. Bellerophon sulcatinus, Emmons. 
17. Rhynchonella increbescens, Hall. 
18. Calymene senaria, Conrad. 
19. Cheirurus pleurexanthemus, Green. 
20. Dalmanites callicephalus, Green. 
2i. Ill ,'iius sp (cf. I. Milleri or Trentonensis.) 
22. Asaphus platycephalus, Stokes. 
23. ' megistos, Locke. 
24. Trinucleus concentricuSj Eaton. 
( )f these Nos. 5, 6, 7, t6, and 2 | are of more than ordinary interest, 
especially the last form Trinucleus concentricus, Eaton, a small trilobite 
which is very common in the Trenton of Montreal and Montmorency, 
