. A manual of elementary zoology . Zoology. Fig. 211.—The Corn-cockle Worm.—From Theobald. A, Cockle gall; C, larvae; in D, gall cut open ; E, larvae magnified. 5. Larva and adults parasitic in different animals, with a free stage. —The Guinea Worm, Dracunculus medinensis. The female, about 90 cm. long, encysts beneath the skin of man, usually in the leg, with the head in the host's foot, causing an abscess. She is Fig. 212.—The Miners' Worm {Ancylostomum duodenale).—From Parker and Haswell, after Leuckart. A, Male and female in caitu ; B, anterior end; C, mouth, with spines; D, h
. A manual of elementary zoology . Zoology. Fig. 211.—The Corn-cockle Worm.—From Theobald. A, Cockle gall; C, larvae; in D, gall cut open ; E, larvae magnified. 5. Larva and adults parasitic in different animals, with a free stage. —The Guinea Worm, Dracunculus medinensis. The female, about 90 cm. long, encysts beneath the skin of man, usually in the leg, with the head in the host's foot, causing an abscess. She is Fig. 212.—The Miners' Worm {Ancylostomum duodenale).—From Parker and Haswell, after Leuckart. A, Male and female in caitu ; B, anterior end; C, mouth, with spines; D, hinder end of male, with expansion known as bursa. czi.£ Cervical glands ; ^ pharynx. The young escape through the abscess when the host wades in water, and enter the small crustacean Cyclops, with which they are swallowed by a new host. The male is small and has rarely been seen. The diseasejis common in tropical Africa and parts of Asia. The worm is removed by rolling on a twig. If it be broken during this process,. 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 Borradaile, L. A. (Lancelot Alexander), 1872-1945. London : H. Frowde, Hodder & Stoughton
Size: 2206px × 1133px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectzoology, bookyear1920
