. The Conchologists' exchange. Mollusks. The Naufilus Vol. XIX. APRIL, 1906. No. 12. NOTE ON A NEW VARIETY OF CERITHIDEA SACBATA GLD., FROM SAN DIEGO, CAL. BY S. S. BERRY. There is present in several Californian collections, and also in the National Museum and elsewhere, a form of the common Cerithidea sacrata Gould, which is " peculiar in appearance, and might be none the worse for a mutational name " {Doll). It differs from the ordi- nary form, with which it intergrades, by being smooth, or nearly so, and more tapering, as shown in the accompanying figure. It is quite heavy and sol
. The Conchologists' exchange. Mollusks. The Naufilus Vol. XIX. APRIL, 1906. No. 12. NOTE ON A NEW VARIETY OF CERITHIDEA SACBATA GLD., FROM SAN DIEGO, CAL. BY S. S. BERRY. There is present in several Californian collections, and also in the National Museum and elsewhere, a form of the common Cerithidea sacrata Gould, which is " peculiar in appearance, and might be none the worse for a mutational name " {Doll). It differs from the ordi- nary form, with which it intergrades, by being smooth, or nearly so, and more tapering, as shown in the accompanying figure. It is quite heavy and solid, and in my specimens the callus of the aperture is of a lighter and browner tint than is usual, and the aperture is smaller and less inflated. Length 30 mm. The original C. sacrata was pretty smooth, but for convenience in designating this form, espe- cially as opposed to the heavily ribbed var. pullata Gould, the name hyporhyssa is here suggested. All the specimens seen are from San Diego, although it doubtless occurs elsewhere. Stanford University^ Feb. 10, 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 Averell, William D. Philadelphia, Wm. D. Averell
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectmollusks, bookyear188
