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 T i F to F V- 



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. globosa. 



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 scabra. 



