. Beginners zoology. Zoology. Fig. 204. â Circulation and Respiration IN Snail. a, mouth; 6, b, foot; c. vent: d, d, lung; h, heart. Blood vessels are black. (Perrier.) the cephalopods, or " head-footed " molluscs. Surrounding the mouth are eight or ten appendages which serve both as feet and as arms. These appendages have two rows of sucking disks by which the animal attaches itself to the sea bottom, or seizes fish or other prey with a firm grip. The commonest examples are the squid, with a long body and ten arms, and the octopus, or devil- fish, with a short body and eight arms. C
. Beginners zoology. Zoology. Fig. 204. â Circulation and Respiration IN Snail. a, mouth; 6, b, foot; c. vent: d, d, lung; h, heart. Blood vessels are black. (Perrier.) the cephalopods, or " head-footed " molluscs. Surrounding the mouth are eight or ten appendages which serve both as feet and as arms. These appendages have two rows of sucking disks by which the animal attaches itself to the sea bottom, or seizes fish or other prey with a firm grip. The commonest examples are the squid, with a long body and ten arms, and the octopus, or devil- fish, with a short body and eight arms. Cephalopods have strong biting mouth parts and complex eyes somewhat resem- bling the eyes of backboned, or vertebrate, animals. The large and staring eyes add to the uncanny, terrifying appearance. The sepia or " ink " discharged through the siphon of the squid makes a dark cloud in the water and favours its escape from. Fig. 205. âa Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Coleman, Walter M. Toronto : Macmillan
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectzoology, bookyear1921
