. Amphioxus and the ancestry of the vertebrates [microform]. Vertebrates; Chordata; Fishes; Ascidiacea; Vertébrés; Cordés; Poissons; Ascidiacés. 20 01' AMriiioxcs. _<;uanlctl against the intrusion of noxious substam ICvcrvthing entering the mouth has tt) pass Ihrou^; vestibule richly jirovided with sensitive epithelial a This vestibule consists of the oral hood with its niari:;- eirri, at the back of which lies the definite oral opcniii, I'ilinu, as it was called by 1 Ii'.\Li:v on acci-uut o! resemblance to a similar structure in the young lamp- (Ammoc(etes). (Cf. l-'ig. 3.) In th
. Amphioxus and the ancestry of the vertebrates [microform]. Vertebrates; Chordata; Fishes; Ascidiacea; Vertébrés; Cordés; Poissons; Ascidiacés. 20 01' AMriiioxcs. _<;uanlctl against the intrusion of noxious substam ICvcrvthing entering the mouth has tt) pass Ihrou^; vestibule richly jirovided with sensitive epithelial a This vestibule consists of the oral hood with its niari:;- eirri, at the back of which lies the definite oral opcniii, I'ilinu, as it was called by 1 Ii'.\Li:v on acci-uut o! resemblance to a similar structure in the young lamp- (Ammoc(etes). (Cf. l-'ig. 3.) In the adult the \ carries twelve tentacles of its own, the viliv tcit'uii which are not to be confused with the lutccal cirri q{\ oral hood. The velar tentacles jiroject in a direction freely into the pharynx. Si vel anl mJ bel dt b3 orl ;». m. Fig. 6. — ./. Portion of a buccal cirrus to show groups of senso-cclls. />'. Isolated ci'lls ot tile ^kin; \\\o cohiuinar sense-ceils carrvuii; a si'ii-iy!.' and one cylindrical eiiulerniic cell with striated cuticular border. (.Ml' i l- (li; KUANS.) Groups of sense-cells occur on the side of the Imcc: cirri at intervals (Fig. 6). Some of these cells bc>^r. vibratile cilium at their free ends, and others bear sf- hairs. Both kinds of cells arc mingled in the same grou;. 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 Willey, Arthur, 1867-1942. New York; London : Mcmillan
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectfishes, bookyear1894
