. The Canadian naturalist and geologist. Natural history -- Periodicals. 30 Post-Pliocene Deposits of the St. Lawrence, several of these forms in the figures ; but there are many inter- mediate varieties, and my wood-cut representations fall far short of the exquisite beauty of the shells themselves, which appear under the microscope as if worked in pure translucent porcelain. Size TiF to FV- Parker and Jones regard the three species last described as identical. Williamson also leans to this view; and since in my specimens there is a gradation from those that are smooth to those that are ribbe
. The Canadian naturalist and geologist. Natural history -- Periodicals. 30 Post-Pliocene Deposits of the St. Lawrence, several of these forms in the figures ; but there are many inter- mediate varieties, and my wood-cut representations fall far short of the exquisite beauty of the shells themselves, which appear under the microscope as if worked in pure translucent porcelain. Size TiF to FV- Parker and Jones regard the three species last described as identical. Williamson also leans to this view; and since in my specimens there is a gradation from those that are smooth to those that are ribbed, and from these to those th;tt are netted, I can scarcely hesitate to adopt the same conclusion, in which case the two la-t species must be regarded as varieties of E. Fig. 11. 8. Biloculina ringens, D'Orb. (Fig. 11).—I have found only two specimens of this species, and neither revealed much of its real character until mounted as a transparent object. I have figured one of them as it appears in this way ; and it well shows the manner in which the successive cells are added, the orifice being alternately at opposite ends of the shell. Size about ^\. Locality.—Tanneries. All the species of Foraminifcra above noticed are found living as well as fossil. Three of them have been obtained b}7 myself from Gaspe Bay, and the others may probably be found there. The species most abundant in the tertiary clays is also that which prevails in Gaspe Bay, and the conditions of life in both nre the same. The Gaspe specimens were found in mud, in from 10 to 15 fathoms, and holding Leda Umatula, Tellina calcarea, and Astarte sulcata, so that it may be regarded as strictly equivalent to our Montreal Leda clay, in or at the surface of which the Foraminifera chiefly occur. Two species found at Gaspe have not as yet been recognized in the tertiary clays. One is a globu- lar shell, probably Orbulina universa, the other a rough, punc- tured, yellowish species, probably Bulimina
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