. The Canadian naturalist and geologist. Natural history -- Periodicals. Tig. 4. Fig. 4. 5. Fig. 5. â Strophomena Philomela. â The same with a mesial fold. Description.âShell rather large; hinge line exceeding the greatest width, forming short rounded ears; sides gently convex, converging towards each othier; front margin and angles regu- larly rounded, sometimes with a projecting lobe in the middle. Width on hinge line from eighteen to twenty four lines. Length from two-thirds to four-fifths the width. In the ventral valve the umbo and depressions on each side are well defined and exactly lik
. The Canadian naturalist and geologist. Natural history -- Periodicals. Tig. 4. Fig. 4. 5. Fig. 5. â Strophomena Philomela. â The same with a mesial fold. Description.âShell rather large; hinge line exceeding the greatest width, forming short rounded ears; sides gently convex, converging towards each othier; front margin and angles regu- larly rounded, sometimes with a projecting lobe in the middle. Width on hinge line from eighteen to twenty four lines. Length from two-thirds to four-fifths the width. In the ventral valve the umbo and depressions on each side are well defined and exactly like those of the convex form of S. al- ternaia. The visceral disc is moderately and broadly convex y the deflected margin from one-fourth to one-third the whole length of the shell, passing into the disc with a short rounded curve. Dorsal valve with the curvature corresponding to that of the ventral valve. The area of the ventral valve is a little more than half a line in height at the foramen in a specimen two inches wide, and it in-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Natural History Society of Montreal. Montreal, Dawson
Size: 1781px × 1403px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthornaturalh, bookcentury1800, bookdecade1860, bookyear1860
