Zoology of the Invertebrata : a Text-Book for Students
The book Zoology of the Invertebrata : a Text-Book for Students was written by author Shipley, A. E. (Arthur Everett), Sir, 1861-1927 Here you can read free online of Zoology of the Invertebrata : a Text-Book for Students book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Zoology of the Invertebrata : a Text-Book for Students a good or bad book?
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2. Canal containing blood-vessel. 3. Sub-oesophageal nerve ganglion. 4. Mouth. 5. Stomach. 6. Peduncle. 7. Plexus of blood-vessels. 8. Median crest on dorsal shell. 9. Organic membrane which has separated from shell during the process of de- calcification. --6 dorsal shell is rather the smaller; both are of a brownish hue with small white spots. The body of the Argiope lies almost entirely in the dorsal shell (Fig. 107), and is supported by certain ridges which this shell bears on its inner sur...face. The BRACHIOPODA 171 whole animal is about 2 "5 mm. long, and about the same in breadth. The shells are secreted by the body-wall or by the mantle. Siace the body Ues chiefly in the dorsal shell, the larger part of the latter is secreted by the body-wall, and the dorsal mantle is of small extent; on the other hand, the greater part of the ventral shell is lined by a fold of integu- ment, the ventral mantle. The substance of the shell is composed of minute calcare- ous spicules kept together by a network of organic fibrils (Kg.
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