. Handbook of zoology [microform] : with examples from Canadian species, recent and fossil :. Zoology; Invertebrates; Zoologie; Invertébrés. PROVINCE MOLLUSCA. 151 Jh'iff. Doris planulata, Stimpson. The most interesting of the Tectibranchiates are the Bullae or bubble-shells and their allies. These have, enclosed in the mantle, a delicate and beau- tiful spiral shell. Several species, all of small size, occur on our coasts. (Fig. 174.) Fiff. 174. m i Cylichna alba, Brown. Order 4.—Piilinoiiifera. Though, from the dryness of its summers and the coldness of its winters, Canada is by no mea
. Handbook of zoology [microform] : with examples from Canadian species, recent and fossil :. Zoology; Invertebrates; Zoologie; Invertébrés. PROVINCE MOLLUSCA. 151 Jh'iff. Doris planulata, Stimpson. The most interesting of the Tectibranchiates are the Bullae or bubble-shells and their allies. These have, enclosed in the mantle, a delicate and beau- tiful spiral shell. Several species, all of small size, occur on our coasts. (Fig. 174.) Fiff. 174. m i Cylichna alba, Brown. Order 4.—Piilinoiiifera. Though, from the dryness of its summers and the coldness of its winters, Canada is by no means favourable to the land and fresh-water snails, yet ^e have numerous species, some of which are very common. They belong to the following famihes : 1. Aiiriciiliflae.—The shells of the genus Auricula (sub-gener? Jlela'^ywus, Alexia) have the aperture guarded by processes, and inhabit salt marshes and similar places, thus connecting in their habitat the fresh-water and sea 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 Dawson, J. W. (John William), Sir, 1820-1899. Montreal : Dawson
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectzoology, bookyear1870
