Archive image from page 124 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana01todd Year: 1836 Fig. 34. of the lower surface, and the intestine (b,b.) connected to the shell by a mesentery (c), on which vessels are ra- mified, passes in a convoluted manner upwards to the oppo- site axis where the anal aperture (a) is surrounded by the five openings of the ova- ries (d,d.) The mouth is surrounded with a maxillary apparatus containing five teeth, and the exterior of the complicated and solid shell is seen to be provided with moveable cal- ~o m ramose ten
Archive image from page 124 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana01todd Year: 1836 Fig. 34. of the lower surface, and the intestine (b,b.) connected to the shell by a mesentery (c), on which vessels are ra- mified, passes in a convoluted manner upwards to the oppo- site axis where the anal aperture (a) is surrounded by the five openings of the ova- ries (d,d.) The mouth is surrounded with a maxillary apparatus containing five teeth, and the exterior of the complicated and solid shell is seen to be provided with moveable cal- ~o m ramose tenta- cula (c) and an osseous ap- paratus. The intestine is long, convolu- ted, vascular, supported by a mesentery, and termi- nates in a cloaca (z) at the opposite axis of the bo- dy. The rami- fied internal branchial ( ff) open from' the cloaca; the great systemic artery receives the aerated blood from the branchiae, and the organs of generation (m) open near the anterior part of the body. The irritable coriaceous skin is supported by five broad longitudinal subcutaneous muscular bands, and five crowded series of tubular mus- cular feet extend from its surface. (See ECHI- NODERMA.) The SECOND SUB-KINGDOM Or DIPLO-NEU- ROSE DIVISION comprehends four classes of helminthoid animals and the same number of entomoid classes, viz. 6. Entozoa, parasitic,simple,internal,or fixed animals, for the most part of a lengthened cylindrical form, without distinct organs of sense or any internal skeleton, the mouth or anterior part of the body generally provided with recurved sharp spines, the body generally covered with an elastic white transparent inte- gument, the nervous system seldom distinct, the vascular system without auricle or ven- tricle, without respiratory organs, and with the sexes generally separate. (See ENTOZOA.) 7. Rotifera, minute aquatic animals with distinct nervous and muscular systems, provided with eyes, lateral maxilla?, a dorsal vessel, an intestine with two apertures
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