Abstract

Four new species of Chaetodermatidae (Chaetoderma usitatum, Falcidens chiastos, F. lipuros and F. macrafrondis) and a new genus and species of Prochaetodermatidae (Rhabdoderma australe) are the first Chaetodermomorpha described from off Australia; all are from the shelf in Bass Strait or from the continental slope off southeastern Australia. Two species are numerous: F. chiastos occurs at densities sometimes up to 180 m2 from 22 to 120 m in 20 of the 23 shelf samples that contain Chaetodermomorpha, and the prochaetodermatid R. australe is common from deeper water, 1,120 to 2,510 m. Several additional species only recently received or with a single specimen are noted but not described; three belong to Prochaetoderma, Limifossor, or Scutopus, thereby extending the recorded ranges of these genera to the western Pacific. Of the 16 species of Chaetodermomorpha collected, four are shelf species occurring at depths of less than 200 m (F. chiastos, F. lipuros, one Prochaetodermatidae, one undetermined), six are upper slope species extending to 1,000 m (three species of Falcidens, Chaetoderma sp., Scutopus sp., Limifossor sp.) and six extend below 1,000 m (C. usitatum, F. macrafrondis, R. australe, Falcidens sp., Chaetoderma sp., Prochaetoderma sp.). These depth distributions are similar to other Pacific Chaetodermomorpha genera except for Chaetoderma, a genus usually common on the shelf but missing from Bass Strait.

 
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Bibliographic Data

Short Form
Scheltema, 1989, Rec. Aust. Mus. 41(1): 43–62
Author
A. H. Scheltema
Year
1989
Title
Australian Aplacophoran molluscs: I. Cheatodermomorpha from Bass Strait and the Continental Slope off south-eastern Australia
Serial Title
Records of the Australian Museum
Volume
41
Issue
1
Start Page
43
End Page
62
DOI
10.3853/j.0067-1975.41.1989.135
Language
English
Date Published
30 June 1989
Cover Date
30 June 1989
ISSN
0067-1975
CODEN
RAUMAJ
Publisher
The Australian Museum
Place Published
Sydney, Australia
Subjects
MOLLUSCA; TAXONOMY; BIOGEOGRAPHY
Digitized
21 October 2008
Available Online
04 November 2008
Reference Number
135
EndNote
/Uploads/Journals/17701/135.enw
Title Page
/Uploads/Journals/17701/135.pdf
File size: 106kB
Complete Work
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