File:EB1911 Gastropoda - Triton variegatum (A) and Pyrula tuba (B).jpg

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Summary

Description

English: Triton variegatum (A) and Pyrula tuba (B). See legend below.

Date

published 1911

Source

“Gastropoda,” Encyclopædia Britannica (11th ed.), v. 11, 1911, p. 513, fig. 23.

Author

Joseph Thomas Cunningham

Permission
(Reusing this file)

This image comes from the 13^th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States.

English: Legend:

A, Triton variegatum, to show the proboscis or buccal introvert (e) in a state of eversion.
a,	Siphonal notch of the shell occupied by the siphonal fold of the mantle-skirt (Siphonochlamyda).
b,	Edge of the mantle-skirt resting on the shell.
c,	Cephalic eye.
d,	Cephalic tentacle.
e,	Everted buccal introvert (proboscis).
f,	Foot.
g,	Operculum.
h,	Penis.
i,	Under surface of the mantle-skirt forming the roof of the sub-pallial chamber.
B, Sole of the foot of Pyrula tuba, to show a, the pore usually said to be “aquiferous” but probably the orifice of a gland; b, median line of foot.

File history

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	18:59, 4 March 2019		716 × 426 (80 KB)	Library Guy	{{Information \|description ={{en\|1=Triton variegatum (A) and Pyrula tuba (B). See legend below.}} \|date =published 1911 \|source =“Gastropoda,” ''Encyclopædia Britannica'' (11th ed.), v. 11, 1911, p. 513, fig. 23. \|author =Joseph Thomas Cunningham \|permission ={{PD-Britannica}} }} {{en\|Legend:}} {\| \|- \|colspan="2"\| A, ''Triton variegatum'', to show the proboscis or buccal introvert (''e'') in a state of eversion. \|-valign="top" \|''a'',\|\|Siphonal notch of the shell...

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