Prams, 1X 
(For text see pages 236-247.) 
Fic. 1.—Kennerlia glacialis, twice natural size. Specimen from Labrador, collected by Prof. A. S. Pack- 
ard, jr., 1864. 
Fic.la.—The same. Interior view of another specimen. 
Fic. 2.—Orenella decussata, six times natural size. From Grand Manan, New Brunswick. 
Fic. 3.—Crenella faba, four times natural size. From Labrador. 
Fic. 4.—Awinopsis orbiculata, eight times natural size. From Labrador. 
Fic. 5.—Acmeea rubella, four times natural size. From Labrador. 
Fic. 5a.—The same specimen. Profile view. 
Fic. 6.—Astyris rosacea, four times natural size. From Labrador. 
Fic. 7.—Bela pleurotomaria, three times natural size. From off Cape Cod. 
Fic. 8.—Bela sarsii, four times natural size. From Labrador. 
Fic. 9.—Cingula castanea, eight times natural size. From Gulf of Saint Lawrence. 
Fic. 10.—Bela incisula, twice natural size. From Eastport, Maine. 
Fic. 11.—Menestho albula, eight times natural size. From Labrador. 
Fic. 12.—Sipho lividus, natural size. From a specimen taken off Metis, Canada, by Principal J. W. 
Dawson. : . 
Fic. 13.—Buccinum Totteni, natural size. Off Metis, Canada (J. W. Dawson). 
Fig. 14.—Buccinum ciliatum, twice natural size. Riviére du Loup, Canada (J. W. Dawson). 
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