. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. BULIMULUS. 391 Fig. 274. marked ^villl s|>()t5 and obsolete blotches of horn-color; spire conic, acute; whorls , rather convex, the last about as lonj; as the spire, hardly attenuated at base; columella with a small dentiform fold; aperture scarcely oblique, acuiuinately ohlonu;, brownish within; peristome straij^^ht, its Yv^ht margin somewhat arched, its coluinellar margin broad- ened above, spreading. Length 33, diameter 14-15 mill.; of aperture, length lG-17, breadth 7^ mill. One of the uniformly wh
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. BULIMULUS. 391 Fig. 274. marked ^villl s|>()t5 and obsolete blotches of horn-color; spire conic, acute; whorls , rather convex, the last about as lonj; as the spire, hardly attenuated at base; columella with a small dentiform fold; aperture scarcely oblique, acuiuinately ohlonu;, brownish within; peristome straij^^ht, its Yv^ht margin somewhat arched, its coluinellar margin broad- ened above, spreading. Length 33, diameter 14-15 mill.; of aperture, length lG-17, breadth 7^ mill. One of the uniformly white forms of the species is figured in Fig. 274, and two of the same from the table-land west of Fort Clark, figured in Fig. 272, show the variation in breadth of which the species is capable. Jaw as usual in the genus; nu- merous delicate ribs; a strong upper muscular attachment. There are about 76 rows of teeth on the lingual membrane of B. alternatus, each consisting of 75 (37—1—37) teeth. Central teeth long, unicuspid, bluntly pointed, the laterals bicuspid, modified as they pass off laterally into the marginals. Genitalia not 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
Size: 2108px × 1185px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorha, bookcentury1800, bookdecade1860, booksubjectzoology
