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File:The American lobster (Cut 31-34) (6678739319).jpg

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jll. U.S. F.C.
The American Lobster. (To face page 209.)
Plate I.
Cdt 31. — Surface view of egg nauplius,
showing thoracic abdominal fold. The
mouth, as in cut 30, is screened by the lab
rum, and the optic disks are more sharply
defined; second antenna? forked; embryo
about 12 days old. 29 diameters.
Cut 32. — Surface view of egg nauplius,
showing parts much more concentrated
than in earlier stages. Antenna? exhibit
traces of segmentation, and the second
antenna? have a slender inner branch.
The abdomen is bifid at its extremity,
which nearly touches the labrum ; optic
disk lobular; embryo 14 to 10 days old.
August 14. 29 diameters.
Cut 33. — Surface view of embryo with first
maxilla; budded; embryo 16 to 18 days
old. August 5. 29 diameters.
In cuts 31-38 there is little attempt to
show more than the form of the embryo.
The series G to J represents the progres-
sive development of the summer eggs.
Compai'e the Eate of Development, pp.
55 to 57, and table 18.
Cut 34. — Surface view of embryo, showing
5 pairs of post-mandibular appendages.
The antennae have grown obliquely back-
ward until they come to lie nearly paral-
lel with the abdomen. The telson. which
is now distinctly forked, partially over-
laps the brain. Eye-pigment not yet
apparent. Nearly same stage as 3 (5),
table 18; about 21 days old. From egg
killed in Perenyi fluid, August 15, 1893.
29 diameters.

Drawn by F. H. Herrick.
Date
Source https://www.flickr.com/photos/biodivlibrary/6678739319
Author Herrick, Francis Hobart
Full title
InfoField
The American lobster; a study of its habits and development.
Page ID
InfoField
37159785
Item ID
InfoField
114284 (Find related Wikimedia Commons images)
Title ID
InfoField
53809 (Find related Wikimedia Commons images)
Page numbers
InfoField
Cut 31-34
BHL Page URL
InfoField
https://www.biodiversitylibrary.org/page/37159785
DOI
InfoField
10.5962/bhl.title.53809
Page type
InfoField
Illustration
Flickr sets
InfoField
  • The American lobster
Flickr tags
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Flickr posted date
InfoField
11 January 2012
Credit
InfoField
This file comes from the Biodiversity Heritage Library.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.

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current13:28, 15 September 2015Thumbnail for version as of 13:28, 15 September 20151,221 × 1,867 (195 KB)Fæ (talk | contribs)== {{int:filedesc}} == {{BHL | title = The American lobster; a study of its habits and development. | source = http://www.flickr.com/photos/biodivlibrary/6678739319 | description = jll. U.S. F.C. <br> The American Lobster. (To face page 209.) <br> Plat...

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