. Animal forms; a second book of zoology. Zoology. ANIMALS OF UNCERTAIN RELATIONSHIPS 71 by the retreating tide. They are usually highly colored with yellow, green, violet, or various shades of red, and are so twisted into tangled masses that the differ- ent parts of the body are indistinguishable. As the animal crawls about, a long thread- like appendage, the pro- boscis, is frequently shot out from its sheath at the forward end of the body and appears to be used as a blind man uses his stick. At other times, when small worms and other animals are encountered, the proboscis is shot out farthe
. Animal forms; a second book of zoology. Zoology. ANIMALS OF UNCERTAIN RELATIONSHIPS 71 by the retreating tide. They are usually highly colored with yellow, green, violet, or various shades of red, and are so twisted into tangled masses that the differ- ent parts of the body are indistinguishable. As the animal crawls about, a long thread- like appendage, the pro- boscis, is frequently shot out from its sheath at the forward end of the body and appears to be used as a blind man uses his stick. At other times, when small worms and other animals are encountered, the proboscis is shot out farther and with greater force, impaling the victim on a sharp terminal spine (Fig. 44). The food is now borne to the mouth, located near the base of the proboscis, is passed into the digestive tract, traversing the entire length of the body, and is far- ther operated on by systems of organs too complex to be considered Fig. 44.—A band or nemertean worm. A, entire worm ; B, head, bearing numerous eyes and spine-tipped 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 Jordan, David Starr, 1851-1931; Heath, Harold, 1868- [from old catalog] joint author. New York, D. Appleton and company
Size: 1706px × 1465px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1902
