. Bulletin - United States National Museum. Science. types of ramentosa to Dr. Gould, and of reticulata to Dr. Pfeiffer, from Mission Peak, twenty-five miles southeast of Oakland. Dr. Newcomb's description of H. Bridgesi is as follows: " Shell deeply umbilicate, depressly globose, plicately striate and covered with minute granulations, translucent grayish horn-color; within tinted with i^urple, with a narrow, incircling central brownish band; si)ire conical; whorls G, convex; suture well impressed; aperture roundly lunar; lip expanded and re- flected, of a pale lilac-color. Greater diamet
. Bulletin - United States National Museum. Science. types of ramentosa to Dr. Gould, and of reticulata to Dr. Pfeiffer, from Mission Peak, twenty-five miles southeast of Oakland. Dr. Newcomb's description of H. Bridgesi is as follows: " Shell deeply umbilicate, depressly globose, plicately striate and covered with minute granulations, translucent grayish horn-color; within tinted with i^urple, with a narrow, incircling central brownish band; si)ire conical; whorls G, convex; suture well impressed; aperture roundly lunar; lip expanded and re- flected, of a pale lilac-color. Greater diameter, 27'"'"; height, 19""". Aperture : Diameter, 13'"'" ; height, 11 mm " Bcmarls.—But a solitary specimen of this shell has been obtained, but it differs essentially from any described species. In its lightness of structure 2/. i?n"(), lUpiessed. ^ud general aspect it resembles Helix Bonplandi^ from which it is widely separated in most of the detail of character. Its nearest approach to any described California species is to H. ramentosa, Gould, which is much smaller in size, more solid in struct- ure, with a more depressed spire, lighter color, and more scaly granula- tions. From H. XieMiiiiana, Lea, it is readily distinguished by its large umbilicus and difference of foT^m. San ; The specimen I have figured above (Fig. 109) seems to correspond more nearly in shape with Dr. Newcomb's description than the shell I iG. no. received by me from him as H. Bridgesi and here figured (Fig. 110), The name FarJxeri was suggested by Mr. Tryon, as Bridgesi was preoccupied in the genus Helix. A small, globose, imperforate, thick form of var. reticulata, from Watsonville, Cal., is also figured. here (Fig. 111). Jaw of var. ramentosa stout, strongly arcuate, dark horn-color, tranversely striate; ends but slightl}^ at- tenuated, blunt; anterior surface with 3 stout, widely separated ribs on the central third of the jaw, their Helix B
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
