Elements of comparative anatomy (1878) Elements of comparative anatomy elementsofcompar00gege Year: 1878 Fig. 211. Diagram to exhibit the relations of the respiratory chamber to the ventral groove. A in Balanoglossus. Bin Tunicata. r Respiratory chamber, n Ventral groove. * Ventral folds. at its anterior as well as at its posterior extremity in a blind dilatation. The sides of the groove, which is at first in the Salpas very broad, but later becomes narrow as in the other Tunicata, do not sink equally below the surface in all parts, but form in various regions a variety of prominences which m
Elements of comparative anatomy (1878) Elements of comparative anatomy elementsofcompar00gege Year: 1878 Fig. 211. Diagram to exhibit the relations of the respiratory chamber to the ventral groove. A in Balanoglossus. Bin Tunicata. r Respiratory chamber, n Ventral groove. * Ventral folds. at its anterior as well as at its posterior extremity in a blind dilatation. The sides of the groove, which is at first in the Salpas very broad, but later becomes narrow as in the other Tunicata, do not sink equally below the surface in all parts, but form in various regions a variety of prominences which may be described as longitudinal ridges parallel with the groove. Between these are more or less deeply-cut fissures, so that the contour of the groove in cross-section is described by a much contorted line. The epithelium of the respiratory chamber exhibits even at the free edge of the groove
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