. A manual of zoology. Zoology. 2SS C(ELHEL^IINTHES P g at the posterior end for the passage th' bears a strongly arched and has an opening ul mc pusuruui cuu ivi ui^ jjtic.;.!!^^ of the staUi (tigs. 277, 278). The rlatter dorsal valve frequently bears a -acteristic feature in the calcareous skeleton of the arms (llg. 2 78) which, characteristic feature in the calcarec when present, has very different forms \Mten closed the ^-ah'es completely. Fig. 276.—Anatomy of RhynchomTta psittacca (after Hancock).^ a', left, a', right arm; a, opening into the cavity of the arm; d. intestine; c, blind end
. A manual of zoology. Zoology. 2SS C(ELHEL^IINTHES P g at the posterior end for the passage th' bears a strongly arched and has an opening ul mc pusuruui cuu ivi ui^ jjtic.;.!!^^ of the staUi (tigs. 277, 278). The rlatter dorsal valve frequently bears a -acteristic feature in the calcareous skeleton of the arms (llg. 2 78) which, characteristic feature in the calcarec when present, has very different forms \Mten closed the ^-ah'es completely. Fig. 276.—Anatomy of RhynchomTta psittacca (after Hancock).^ a', left, a', right arm; a, opening into the cavity of the arm; d. intestine; c, blind end of the intestine; g, stomach with liver; m, adductors and divaricators of shell; o. cesophagus; p'. p', dorsal and ventral mantle lobes; .•;/, stalk; i, 2, first and second septum, on the second a nephrostome. enclose the body. When tliey open the gape is anterior, the posterior parts remaining in contact. Here, except in the Ecardines, a hinge is developed just in front of tlie posterior margin, consisting of teeth in the ventral valve which ht into corresponding grooves in the dorsal. Opening. 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 Hertwig, Richard, 1850-1937; Kingsley, J. S. (John Sterling), 1854-1929, ed. and tr. New York, H. Holt
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1912
