. Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote. . This is fol- Fio. 244.—Stage in the conver- sion of Tornaria into Balano- ylossui, with four pairs of branchial slits (after Al. Agassiz). Letters as in figs. 242, 243. FIG. 243.—Stage in the con- nea(l- version of Tornaria into Bala- lowed bv a niUSCU- noylusiiit, with one pair of branchial slits (after E. Met- iar Collar. Jb*Oste- schuikoff), seen from the side. rior to t]ie collar So, external branchial open- ing ; p, peritoneal sac; re, there is a longer portion of the body, the circu
. Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote. . This is fol- Fio. 244.—Stage in the conver- sion of Tornaria into Balano- ylossui, with four pairs of branchial slits (after Al. Agassiz). Letters as in figs. 242, 243. FIG. 243.—Stage in the con- nea(l- version of Tornaria into Bala- lowed bv a niUSCU- noylusiiit, with one pair of branchial slits (after E. Met- iar Collar. Jb*Oste- schuikoff), seen from the side. rior to t]ie collar So, external branchial open- ing ; p, peritoneal sac; re, there is a longer portion of the body, the circular vessel; o, mouth; c, branchial region, which may be divided into he\rt. » a median distinctly ringed part (branchiae) and two lobed lateral portions usually filled with yellow glands. At the boundary, between the median portion and the two lateral lobes, there are on either side rows of openings which serve for the exit of the water from the branchial chamber. Then follows a third division of the body, the gastric region, upon the upper side of which there are four rows of yellow glands (generative glands).. 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 Claus, Carl, 1835-1899; Sedgwick, Adam, 1854-1913; Sinclair, F. G. (Frederick Granville), b. 1858. London, Swan Sonnenschein & co.
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Keywords: ., book, bookcentury1800, bookcollectionbiodiversity, bookdecade1890
