Toledonia perplexa Dall 1902
- Dataset
- Gastropods from the Burdwood Bank (southwestern Atlantic): an overview of species diversity
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Mollusca
- class
- Gastropoda
- order
- Cephalaspidea
- family
- Diaphanidae
- genus
- Toledonia
- species
- Toledonia perplexa
description
Description. Shell height to 2.5 mm (up to 4.1 mm according to Dall 1902); elongate-ovate, delicate. Protoconch of 1.5 slightly convex whorls. Teleoconch of up to 2 whorls, slightly convex in outline; last whorl comprising about 85 % of total shell height. Suture deep, slightly channeled. Surface white; only sculptured with faint growth lines. Aperture ovate, interior white; columella with a strong fold, callus narrow, slightly expanded over the umbilical area.
description
Fig. 5 M
discussion
Remarks. Based on the study of shell morphology, Dell (1990) concluded that Toledonia limnaeaeformis (Smith, 1879) and T. perplexa are two different species, with only the latter present in Patagonian waters. The material studied here is similar to T. perplexa, although differs by having a lower spire. The significance of such differences could not be determined given the poor current state of knowledge of the group.
materials_examined
Examined material. 6 an. and 11 sh. (MACN-In 40707); holotype (USNM 109022).
Name
- Homonyms
- Toledonia perplexa Dall 1902