A new Caecum from Puerto Rico and the Virgin Islands
Moore DR. 1970. A new Caecum from Puerto Rico and the Virgin Islands. Bulletin of Marine Science. 20(2):368-373
The shell of the adult Caecum insularum is only slightly curved, and tapers evenly from the anterior to the posterior end. The septum is even with the posterior end of the shell. The mucro is strong and forms a right-angled triangle when seen from the side; it forms an equilateral triangle when seen from the ventral aspect. The shape of the mucro varies a little from specimen to specimen. The aperture is circular. It is not expanded, and there is no terminal varix. The terminal annular rib is contracted, narrow, smooth, and is often colored brown. Color in the remainder of the shell is somewhat variable. It is usually white, sometimes with indistinct banding. Many specimens are tinged with brown, either near the aperture or suffused over the entire shell.
- Type
- Journal Article
- Authors
- Moore, Donald
- Units
- SFCN
- Keywords
- life stage, sculpture, shell, slug, Snail, Species Description