. East coast marine shells; descriptions of shore mollusks together with many living below tide mark, from Maine to Texas inclusive, especially Florida . Fig. 51 Slit of Turrls presence of this gland, together with the notch in the shell, indicate affinity with the Conidae. The species are extremely numerous, also difficult to define and classify. In- dividuals are usually few in numbers. Many have been described from solitary examples and a considerable number inadequately il- lustrated, if at all. GENOS TURRIS Roedlng 1798, Pleurotoma Lamarck 1799 (TOWER SHELLS) TURRIS VIRGO Wood (T. alblda
. East coast marine shells; descriptions of shore mollusks together with many living below tide mark, from Maine to Texas inclusive, especially Florida . Fig. 51 Slit of Turrls presence of this gland, together with the notch in the shell, indicate affinity with the Conidae. The species are extremely numerous, also difficult to define and classify. In- dividuals are usually few in numbers. Many have been described from solitary examples and a considerable number inadequately il- lustrated, if at all. GENOS TURRIS Roedlng 1798, Pleurotoma Lamarck 1799 (TOWER SHELLS) TURRIS VIRGO Wood (T. alblda Perry). Color whitish; about five prominent raised spiral ridges which are most conspicuous near the periphery; additional, similar, closer ones below; pairs of finer ridges between some of the larger ones; suture well impressed; canal long, narrow. Length inches. Depth range 26-150 fathoms. A single example, occupied by a hermit-crab, was taken in Lake Worth, Flor- ida. In the West Indies it lives in com- paratively shallow water. PI. 52, Fig. 15 Palm Beach County, Florida; Gulf of Mexico; Antilles SUBGENUS ANCISTROSYRINX A very elegant group of deep-water shells which also occur in the Eocene fos- sil beds at Jackson, Mississippi and also probably in Europe. ANCISTROSYRINX ELEGANS Ball. In this shell the anterior portion of the whorls is cov- ered with graniilose spirals, one more prom- inent than the rest in front of which the suture coils; sinus comparatively short, banded outside by an elevated keel. The spines are very small and curved toward the apex; nucleus brownish, glassy and with one keel. Length 27 mm. PI. 38, Fig. 28 Florida Reefs; off Havana, 805 fath- oms GENOS CYMATOSYRINX Dall 1889, Drillia of Authors in Part CYMATOSYRINX FURCATA Reeve. Shell faintly channelled above periphery; ribs usually six in number, rounded, not strong, not in- terrupted at periphery but extending to su- ture; peculiar hump or varlx back of body
Size: 1892px × 2642px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectmollusks
