. A manual of zoology. Zoology. Fig. 343. Fig. 344. Fig. 343.—Hyalcea complanala from above (after Gegenbaur). a, anus; br, gill; c, heart; g, gonad; h, liver; m, mantle; oe, oesophagus; re, nephridium; ^', stomach; //, pedal ganglion and otocyst. Fig. 344.—A, Clione papilionacea.* Cavolinid^ make the 'pterpod ooze' of the deep seas. GYMNOSOMATA; shell lacking. Pneumodermon, Clioiie* Sub Order III. NUDIBRANCHIA. Shell, ctenidia, and osphradia lacking; most possessing accessory gills (cerata) of varying form and distribution. Doridiid^ (Fig. 345J. Tritoniid^, JEolivx. Fig. 345.—Doris bilamellat
. A manual of zoology. Zoology. Fig. 343. Fig. 344. Fig. 343.—Hyalcea complanala from above (after Gegenbaur). a, anus; br, gill; c, heart; g, gonad; h, liver; m, mantle; oe, oesophagus; re, nephridium; ^', stomach; //, pedal ganglion and otocyst. Fig. 344.—A, Clione papilionacea.* Cavolinid^ make the 'pterpod ooze' of the deep seas. GYMNOSOMATA; shell lacking. Pneumodermon, Clioiie* Sub Order III. NUDIBRANCHIA. Shell, ctenidia, and osphradia lacking; most possessing accessory gills (cerata) of varying form and distribution. Doridiid^ (Fig. 345J. Tritoniid^, JEolivx. Fig. 345.—Doris bilamellata* Fig. 346.—^Solidia papulosa (from Ludwig-Leunis). (Dendronotus*); , cerata lacking. In ^olida: branches of the diges- tive tract enter the cerata, expand distally to small sacs filled with nettle cells (p. 207) used for defense; they are derived from hydroids on which these animals feed Order III. Pulmonata. In several respects the Pulmonata are intermediate between the Proso- branchs and Opisthobranchs. Like the latter they are orthoneurous and her- maphroditic (fig. 339). On the other hand, the respiratory organ is far forwards. 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
