. Elementary text-book of zoology. Zoology. PEE IP ATI'S. 513 a Ph delicate tubes, which distributed upon the Long beneath the oesophagus, but, soon diverging, remain widely separate for the rest of their course. They are without ganglionic swellings ; are connected together in their whole length by fine transverse commissures, and finally unite with each other over the rectum at the end of the body (fig. 416). The alimentary canal begins with a muscular pharynx, and runs in a straight course. The anus is terminal. A dorsal longitudinal vessel probably functions as heart. [A pair of elongated
. Elementary text-book of zoology. Zoology. PEE IP ATI'S. 513 a Ph delicate tubes, which distributed upon the Long beneath the oesophagus, but, soon diverging, remain widely separate for the rest of their course. They are without ganglionic swellings ; are connected together in their whole length by fine transverse commissures, and finally unite with each other over the rectum at the end of the body (fig. 416). The alimentary canal begins with a muscular pharynx, and runs in a straight course. The anus is terminal. A dorsal longitudinal vessel probably functions as heart. [A pair of elongated unbranched glandular tubes, the salivary glands, open into thebuccal cavity.] Moseley discovered a well-developed tracheal system, the stigmata of which are distributed over the whole surface of the body. The tracheal trunks are are viscera in fine tufts, slime glands (considered as testes by Grube) open on the oral papilla?; they produce an exceedingly sticky fluid, which the ani- mal ejects when irritated. The Onychophora are, ac- cording to Moseley, of separate sexes. The ova- ries are united to form one structure placed in the middle line on the dorsal side of the intestine, near the hind end of the body. There are two long ovi- ducts, which function as uterus • and open by a common aperture on the ventral surface close to the hind end of the body (fig. 416). The testes are paired and egg-shaped, and lie towards the hind end of the body. The vasa deferentia are coiled and unite to form a common duct, which opens at the same place as do the female organs (fig 417). The eggs develop in the uterus. 33. 116.—Anatomy of a female Peri/iufns (after Moseley). F, Antenna?; G, brain \vith the ventral nerve cords (IV); Ph, pharynx; D, intestine ; A, anus; ,SV, slime gland ; Or. ovaries ; Od, oviduct; V, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illust
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1884
