| 词条 | Pyrgocythara hemphilli |
| 释义 |
| taxon = Pyrgocythara hemphilli | image = Pyrgocythara hemphilli 001.jpg | image_caption = Shell of Pyrgocythara hemphilli | authority = Bartsch & Rehder, 1939 | synonyms_ref = [1] | synonyms =
| display_parents = 3 }}Pyrgocythara hemphilli is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.[1] DescriptionThe length of the shell attains 8 mm. The small, glistening, acute shell is brownish, with the projecting sculpture paler. The protoconch is dark brown, glassy, and rather irregularly coiled. It contains one smooth whorl followed by a peripherally keeled turn and about eight subsequent whorls. The suture is distinct, appressed, with a nodulose band in front of it where the ends of the ribs are cut off by a very narrow fasciolar constriction. The spiral sculpture consists of a few incised lines cutting only the interspaces between the ribs, on the spire. On the body whorl there are six or seven of these lines, with much wider interspaces, followed by three strong cords close-set on the siphonal canal. The axial sculpture consists of (on the body whorl about 13) protractively oblique whitish narrow ribs extending from the fasciole to the cords of the siphonal canal, with subequal interspaces and not continuous up the spire. The silky incrementatl lines are evident. The aperture is narrow. The anal sulcus is deep and rounded, with a strong subsutural callus. The outer lip is sharp-edged, with a feeble varix and a brown spot behind it. The inner lip and the columella show a thick coat of white enamel, the throat not lirate. The siphonal canal is constricted, very short, deep, and slightly recurved.[2] DistributionP. hemphilli can be found in Caribbean waters, ranging from the western coast of Florida to the Bahamas.[3]References1. ^1 {{WRMS species|420357|Pyrgocythara hemphilli Bartsch & Rehder, 1939||11 August 2011}} 2. ^[https://archive.org/details/proceedingsofuni561920unit Dall (1919) Descriptions of new species of Mollusca from the North Pacific Ocean; Proceedings of the U.S. National Museum, vol. 56 (1920) {{PD-notice}}] (described as Elaeocyma arbela) 3. ^Tunnell, John W., Jr., Felder, Darryl L., & Earle, Sylvia A., eds. Gulf of Mexico Origin, Waters, and Biota, Volume 1: Biodiversity. Texas A&M University Press, 2009. 667.
External links
2 : Pyrgocythara|Gastropods described in 1939 |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。