Bullia callosa
{{Short description|Species of gastropod}}
{{Use dmy dates|date=August 2020}}
{{Speciesbox
| image = Bullia callosa 001.jpg
| image_caption = Apertural view of a shell of Bullia callosa (museum specimen at Naturalis Biodiversity Center)
| genus = Bullia
| species = callosa
| authority = (W. Wood, 1828)
| synonyms_ref =
| synonyms =
- Buccinum callosum W. Wood, 1828 (original combination)
- Bullia (Bullia) callosa (Wood, 1828) · accepted, alternate representation
- Bullia callosa var. sulcata G.B. Sowerby III, 1889
}}
Bullia callosa, common name the callused bullia, is a species of sea snail, a marine gastropod mollusk in the family Nassariidae, the Nassa mud snails or dog whelks.{{WRMS species|224363|Bullia callosa Gray}}
Description
The length of the shell varies between 18 mm and 50 mm.
The shell is elongated and cylindrical. The whole external surface is smooth, shining, of a coffee and milk color. The elongated spire is pointed. It is composed of six not convex whorls. Each whorl is covered between the sutures with a layer of matter, which assumes at the base a chestnut color. This layer is much thicker upon the body whorl, and is continued, enlarging itself, to the left lip, where it forms a large semicircular callosity, of a deep chestnut color, bordered with white. Each of the whorls of the spire is likewise separated from the others by a fawn-colored line, which is delineated a little below each suture. The aperture is ovate, of a pale fawn-color, dilated towards the middle, strongly emarginated at its base. The columella is arcuated, callous, fawn-colored and smooth. The callosity of the columella is oblique, thick, furrowed, much shorter than the outer lip. From its lower part, a stria stretches out, which is directed obliquely upon the back of the shell, to its termination at the anterior angle of the right lip, which is sharp.[https://archive.org/details/generalspeciesic00kien Kiener (1840). General species and iconography of recent shells : comprising the Massena Museum, the collection of Lamarck, the collection of the Museum of Natural History, and the recent discoveries of travellers; Boston :W.D. Ticknor,1837]
Distribution
This marine species occurs from Angola to Mozambique.
References
{{Reflist}}
- Marais J.P. & Kilburn R.N. (2010) Nassariidae. pp. 138–173, in: Marais A.P. & Seccombe A.D. (eds), Identification guide to the seashells of South Africa. Volume 1. Groenkloof: Centre for Molluscan Studies. 376 pp.
External links
{{Commons category}}
- {{Gastropods.com|key=9|id=3279|title=Bullia (Bullia) callosa|access-date=15 January 2019}}
{{Taxonbar|from=Q4996910}}