. Zoology : for students and general readers . Zoology. DSlYBLOPMENT OF GASTROPODS. 263 tie on the left side of the body behind the head. In a large Lunatia it is an inch long, with a vein at the base, the gill- lobes arranged like the teeth in a comb. A smaller, much narrower lung lies within and parallel to it. Tlie ovary is situated near the stomach, the ovi- duct ending near the vent. The eggs are laid in capsules (Fig. 190, Purpura lapillus and two egg- capsules) of varied form attached to rocks or, as in Trochus and the I^udibranchs, in masses of jelly at- tached to sea-weeds or stones.
. Zoology : for students and general readers . Zoology. DSlYBLOPMENT OF GASTROPODS. 263 tie on the left side of the body behind the head. In a large Lunatia it is an inch long, with a vein at the base, the gill- lobes arranged like the teeth in a comb. A smaller, much narrower lung lies within and parallel to it. Tlie ovary is situated near the stomach, the ovi- duct ending near the vent. The eggs are laid in capsules (Fig. 190, Purpura lapillus and two egg- capsules) of varied form attached to rocks or, as in Trochus and the I^udibranchs, in masses of jelly at- tached to sea-weeds or stones. As a type of the mode of devel- opment of Gastropods may be cited that of Calyptrma si- nensis, represented in our waters by Calyptrma striata Say (Fig. 191).. Pig. 'iSO.—Furpnra, and Its egg capsules, the latter enlarged.— After Morse. Fis. 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 Packard, A. S. (Alpheus Spring), 1839-1905. New York : Henry Holt
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectzoology, bookyear1879
