294 ihe American Geologist. May, isat* 
Plate XXI. 
Pig. I. Liiii^iilcpis pinniformis Owen. 
Lingulepis acuminata Con. (Walcott). 
V'\<g. 2. Hypseloconus (M.) reciirincs (Whitf.), var. cloiij^atus. P. 284. 
Fig. 3. Agraiilus convexus Whitf. P. 286. 
Fig. 4. PtycJioparia calvmenoidcs (Whitf.), (and head of /I .convexus). 
P. 28 > 
Fig. 5. Agraulics coiivexus'^\\\'ii., {'~,im\Q\\\iY\\\(\.\\A\). P. 288. 
Fig. 6. Hypseloconus stabilis, n. sp. P. 286. 
Fig. 7. Agraulus convexus ^\\\X.i., {?i\^x-Ag& %\L^). P. 288. 
Fig. 8. Hypseloconus rccurvus {'^\\\\.{.),{?xn?A\). P. 284. 
Fig. 9. Euomphalus strongi iy^hhi.), var. sinisfrorsus. P. 287. 
Fig. 10. Hypseloconus franconiensis, n. sp. P. 285. 
Figs. 11-14. Hypseloconus recurvus (Whitf.), (three different forms). 
P. 284. 
Fig, 15. Fragment of a partially coiled form of undetermined affin- 
ities. P. 287. 
Fig. 16. Hypseloconus rccicrvus (Whitf,), P. 284. 
Fig. 17. Tryblidiitm rectilaterale, n. sp. P. 280. 
Fig. 18. Tryblidium convexum, n. sp. P. 280. 
Fig. 19. Cheilocephalus St. croixensis, n. sp. P. 290. 
Fig. 20. Slabs showing several casts of Hypseloconus recuriius. P. 
284. 
Fig. 21. Hypseloconus recurvus {^\\\\.i.), xax. e lo ngatvs {iy^Q). P. 
284. 
[European aarl Amsrican Glacial Geologry Compared, IV.] 
THE PARALLEL ROADS OF GLEN ROY. 
By Warren Upham, St. Paul, Minn. 
Ill the western part of the Lochaber district of the central 
Scottish Highlands, from nine to twenty miles northeast of 
their highest mountain, Ben Nevis (4,406 feet), is Glen Roy, 
in wliich the river Roy flows southwest to the river and Glen 
vSpean, tributary to the southern end of loch Lochy and thence 
by the river Lochy to the sea in loch Linnhe at Banavie and 
Fort William. These glens, with Glen Glaster (Glas Dhoire), 
opening into Glen Roy from the east, Glen Collarig, which is 
a lower affluent of the Roy from the west, and the upper part 
of Glen Gloy; lying between Glen Roy and loch Lochy, to 
which it is independently tributary, bear, on their inclosing 
hill and mountain slopes three parallel horizontal shore lines, 
