Compsodrillia alcestis

Compsodrillia alcestis is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.[1]

Compsodrillia alcestis
Original image of a shell of Compsodrillia alcestis
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Caenogastropoda
Clade: Hypsogastropoda
Clade: Neogastropoda
Superfamily: Conoidea
Family: Pseudomelatomidae
Genus: Compsodrillia
Species:
C. alcestis
Binomial name
Compsodrillia alcestis
(Dall, 1919)
Synonyms[1]
  • Clathrodrillia alcestis Dall, 1919
  • Clathrodrillia (Carinodrillia) alcestris Dall, 1919

Description

The length of the shell attains 43.5 mm, its diameter 15.3 mm.

(Original description) The slender shell is acute and pale yellowish brown. It contains (the protoconch lost), about ten whorls. The suture is strongly appressed with a prominent cord (afterwards broadening into a band) in front of it. The siphonal fasciole is constricted; with only arcuate striation. The sculpture on the early whorls consists of two or three strong cords, swollen where they override the ribs, these are prominent on the periphery. On the later whorls the peripheral cord becomes an undulated keel and the interspaces are closely spirally striate. On the body whorl in front of the keel are about a dozen major threads with wide spirally striate interspaces. The axial sculpture of (on the body whorl seven) peripheral waves, rather than ribs, overridden by the spirals, the incremental lines inconspicuous. The aperture is narrow. The anal sulcus is slightly removed from the suture, distinct, with a small subsutural callus . The outer lip is moderately produced, sharp edged, slightly crenulate by the spiral sculpture, smooth within. The inner lip shows a moderate layer of callus, with slightly raised outer edge which is continued over the columella and on the siphonal canal is separated from the feeble siphonal fasciole by a narrow chin. The siphonal canal is short, wide and slightly recurved.[2]

Distribution

This marine species occurs from the Gulf of California to Colombia

gollark: DVDs are digital and thus exactly copyable however.
gollark: That is a... somewhat bizarre conclusion to draw from that.
gollark: Universities do seem to mention "transferable skills" a lot, but I don't know how significant those actually are.
gollark: Probably, yes. I have a friend who likes programming language theory a lot but doesn't really expect to be able to get work in that (eventually).
gollark: The theoretical stuff isn't necessarily worse depending on what you want to do.

References
  1. Compsodrillia alcestis (Dall, 1919). Retrieved through: World Register of Marine Species.
  2. Dall (1919) Descriptions of new species of Mollusca from the North Pacific Ocean; Proceedings of the U.S. National Museum, vol. 56 (1920) This article incorporates text from this source, which is in the public domain.
  • Olsson, Axel A. "Biological Results of the University of Miami Deep-Sea Expeditions. 77. Mollusks from the Gulf of Panama Collected by R/V John Elliott Pillsbury, 1967." Bulletin of Marine Science 21.1 (1971): 35-92
  • Tucker, J.K. (2004). "Catalog of recent and fossil turrids (Mollusca: Gastropoda)" (PDF). Zootaxa. 682: 1–1295. doi:10.11646/zootaxa.682.1.1.
  • "Compsodrillia alcestis". Gastropods.com. Retrieved 15 January 2019.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.