File:The transformations (or metamorphoses) of insects (Insecta, Myriapoda, Arachnida, and Crustacea) - being an adaptation, for English readers, of M. Émile Blanchard's "Metamorphoses, moeurs et instincts (14598335107).jpg

Identifier: transformationso01dunc (find matches)
Title: The transformations (or metamorphoses) of insects (Insecta, Myriapoda, Arachnida, and Crustacea) : being an adaptation, for English readers, of M. Émile Blanchard's "Metamorphoses, moeurs et instincts des insects;" and a compilation from the works of Newport, Charles Darwin, Spence Bate, Fritz Müller, Packard, Lubbock, Stainton, and others
Year: 1870 (1870s)
Authors: Duncan, P. Martin (Peter Martin), 1821-1891 Blanchard, Emile, 1819-1900. Metamorphoses, moeurs et instincts des insects Conger, Paul S., former owner. DSI Abbott, Charles C., former owner. DSI
Subjects: Insects Insects Myriapoda Arachnida Crustacea
Publisher: Philadelphia : Claxton, Remsen, and Haffelfinger
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
eusually quite destitute of eyes. The antennae are rudimentary,the segments of the body are more or less amalgamated with eachother, the feet are stunted, and the swimming appendages aretransformed into leaf-shaped branchiae. In the males, which aredwarfed, the eyes, antennae, and feet are usually better preservedthan in the females ; but, on the other hand, all the appendagesand every trace of segmentation have not unfrequently disappeared.In the females oi Entonisciis, which are found in the body cavity ofcrabs, the eyes, antennae, mouth-organs, the segmentation, and thewhole of the limbs (in one species) disappear without leaving atrace. One species would almost be regarded as a flat worm,rather than an Isopod, if its eggs and young did not betray itscrustacean nature.* Metamorphosis appears to be absent in the common wood-louse, which may be taken as the type of the Isopoda. The small water fleas, or DapJiniidcE, are well known to those * Fritz Miiller, translated by W. S. Dallas.
Text Appearing After Image:
liiiiiiiiiiiiiiiiJillii■ .^< THE DAPIINIID^. 465 who keep fresh-water aquaria. The Daphnia piilcx is very-abundant in ditches and ponds, and it is recognised by thecarapace consisting of two shell-hke valves, which enclose thebody, and allow the large antennae to protrude externally. It isthe type of an order, and is only interesting to us because it doesnot undergo metamorphosis. The young DaphniidcB are bornfrom the egg with ten legs and with the external appearance ofthe adults. Shell moulting occurs several times, and there ismuch that is interestinsj; in the creatures having two kinds of

Note About Images