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Show 696 MR. J. BRAZIER ON SEVEN NEW SPECIES OF HELIX. [Nov. 21, plate there are no horns on tbe sides of the head, the chin are black, on the sides of the throat there are two wattles or naked spaces blue striped with red ; the periophthalmic region is red and green ; and, lastly, on the sides of the neck there is a red patch of feathers separated below from the buff colour of the breast by a black line. In the specimen before me there are two horns well developed, one on each side of the head, of a bluish colour ; the chin and throat are covered with naked skin, forming a prominent fold along the middle, of an orange-red colour for the greatest part, blue towards the sides, and flesh-colour on the edge, from which the flesh-colour protrudes with several patches on the blue ; the periophthalmic region is orange-red ; and on the sides of the neck the red feathers do not make a patch limited below by a black line, but mix with the spotted ground of the upper parts, aud follow underneath the circle of black feathers which fringes the naked skin of the throat. 7. Descriptions of seven new Species of the Genus Helix, and of two Fluviatile Shells from Tasmania. By J O H N BRAZIER, C.M.Z.S. [Eeceived October 30, 1871.] 1. HELIX (PITYS) ARCHITECTONICA. Shell rather widely umbilicated, depressedly orbicular, thin, glassy, shining, regularly and closely arcuately ribbed, the interstices very finely striated ; spire rather elevated, suture impressed ; whorls 5, convex, last large, convex, descending a little in front; base convex, sculptured the same as the upper surface; umbilicus wide, rather narrow at the bottom; aperture nearly vertical, roundly lunate; peristome simple, thin, acute, margins approximating. Diam. maj. 1|, min. 1\, alt. | line. Hab. Near Hobart Town, Tasmania (Petterd). This little species is allied to Helix pexa, Cox, from New South Wales. 2. HELIX (PITYS) PETTERDI. Shell widely umbilicated, depressedly circular, thin, dull brown, very minutely striated throughout with lines of growth, giving it a silky appearance; spire moderately elevated, apex obtuse, suture very much impressed ; whorls 5, rather convex, last not descending, convex, base convex ; umbilicus nearly perspective, about one third of the diameter; aperture oblique, roundly lunate ; peristome straight, simple, thin, acute, margins distant. Diam. maj. 2 lines, min. If, alt. I line. Hab. Huon Road, near Hobart Town, Tasmania; found under chips (Petterd). |