Microshells: Caecum swinneni n. sp. ミジンギリギリツツ類09

BIBLIOGRAPHY
Species 学名	Caecum swinneni n. sp. Nofroni, Pizzini & Oliverio, 1997
和名 Japanese name Common name	ミジンギリギリツツ類09
Class Subclass Order 綱亜綱目	GASTROPODA PROSOBRANCHIA DISCOPODA 腹足綱前鰓亜綱盤足目
Group グループ	ミジンギリギリツツ Caecids
Super Family / Family 科目	RISSOIDEA CAECIDAE リソツボ超科ミジンギリギリツツガイ科
Genus(Subgenus) 属 (亜属)	Caecum () ミジンギリギリツツ()
COUNTRY 国	ISLAS CANARIAS カナリー諸島
LOCALITY 採集場所	Puerto del Carmen (Lanzarote Isl.), ランサローテ島
DISTRIBUTION 分布	Lanzarote-Isl., Tenerife, Canaria Isl.. カナリア諸島
HABITAT 生息場所
DESCRIPTION 説明 (Japanese)	The information is provided by Mr.Mauro Pizzini. Description (between parentheses holotype's measurements). Shell small, white, semitransparent. Moderately curved, slender, (H/L ratio = 4.8), subcylindrical. Sculpture of marked longitudinal, slightly coiled, ridges ; rough and irregular growth lines, normally little elevated, determine sometimes a chequered pattern on the first half of the tube.Apertural varix consisting of a swelling, crossed by 7/8 very small ring ofequal size. After the small rings the swelling tends to contract, andthereafter to enlarge newly . Septum rather immersed with respectto the cutting plane; the mucro, very characteristic and rather protruding,has a triangular shape, with a wide base narrowing toward the apex butwith a spatuliform tip, similar to a squashed ball, sligthly bent to right; dorsal side concave, ventral one slightly concave.Aperture perfecly circular. Juveniles, more conically shaped than adults,show nearly inalterated all peculiar characteristic of the species but theapertural swelling. Operculum, soft parts and larval shell unknown. Dimensions: mean length 2.0 (1.77) mm; mean diameter 0.4 (0.37) mm.Distribution. It is presently known only from the islands of Lanzarote andTenerife.See I. Nofroni, M. Pizzini & M. Oliverio, 1997.Contribution to theknowledge of the Family Caecidae. 3. Revision of the Caecidae of the CanaryIslands. (Caenogastropoda:Rissooidea). Argonauta, X (7-12): 3-32 この情報はMauro Pizzini氏より提供されたもの
原色日本貝類図鑑	N
続原色日本貝類図鑑	N
学研生物図鑑貝	N
生物大図鑑貝類	N
日本及び周辺地域産軟体動物	N
原色世界貝類図鑑 1	N
原色世界貝類図鑑 2	N
Compendium of Seashells	N
Compendium of Landshells	N
Australian MARINE SHELLS
日本近海産貝類図鑑
Last modified on 1997/10/08