. A textbook of invertebrate morphology [microform]. Invertebrates; Morphology (Animals); Invertébrés; Morphologie (Animaux). TYPE VCELENTEHA, 95 wJiich development ceases varies iu different forms; in Tuhu hirui, for instance, the medusoid bud resembles a medusa ex cei^t that It lacks tentacles, sense-organs and mouth, and is not iree-swimming; in (lava not only does development cease at an earlier stage, but a certain amount of degeneration. PlO. SHOWING THE DEVELOPMENT OF A MeDUSABUD A ontpushing of body-wall of polyp ; B, tliickenino- of • C ' ' ..on of subumbrellar c
. A textbook of invertebrate morphology [microform]. Invertebrates; Morphology (Animals); Invertébrés; Morphologie (Animaux). TYPE VCELENTEHA, 95 wJiich development ceases varies iu different forms; in Tuhu hirui, for instance, the medusoid bud resembles a medusa ex cei^t that It lacks tentacles, sense-organs and mouth, and is not iree-swimming; in (lava not only does development cease at an earlier stage, but a certain amount of degeneration. PlO. SHOWING THE DEVELOPMENT OF A MeDUSABUD A ontpushing of body-wall of polyp ; B, tliickenino- of • C ' ' ..on of subumbrellar cavity ; A ^^^^^a .{::7:i .ne by al- E of nuHal cauuls ; F. t ansver ect .n tlirough E, along the line indicated by ah. nausvtrse section cc = circular canal. ,., ^ r,^,.^, ra = cavuy of nmnubrium. su = submnbrelhu- cavity »o = radial canal. = velum. ^ occurs, the rudimentary subumbrellar cavity never commu mcatmg with the exterior and the radiating and chX canals being entirely obliterated ; and finally in Ena^^Z the bud never develops beyond the earliest stagefn wllr t 13 a simple tubular outgrowth of the body-wall. The Relationsliips of the various Orders to one Another mn.« .1 nvlnirioB show sucli a simple type of organizationT ifl ,7 ^^^ that they represent more ol- h Jclosei; ^;: ^iTe n eZ7? UT'f ^.nisual habitat in fresh water suggesi; the pos^W^'of ^"; hr^l^' ^,.o some degradation. On supposition that they rep^J^"^. 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 McMurrich, J. Playfair (James Playfair), 1859-1939. New York : H. Holt
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyo, bookyear1896
