. Land snails from Hawaii, Christmas island, and Samoa. Snails; Mollusks; Mollusks; Mollusks. Figure 1.—Georissa: a, Georissa cookei, new species; b, Georissa neali, new species; c, Georissa kauaiensis, new species. Type, 131432, Academy of Natural Sciences of Philadelphia; paratype, 59188, Bishop Museum. Georissa neali, new species (figure 1, &). The shell is decidedly shorter than G. cookei, of 2^2 strongly convex whorls. The embryonic shell is inflated, hemispherical, deeply and closely striate across (Trivia-like, as seen from above). Subsequent whorls have a few low, wide, somewhat un
. Land snails from Hawaii, Christmas island, and Samoa. Snails; Mollusks; Mollusks; Mollusks. Figure 1.—Georissa: a, Georissa cookei, new species; b, Georissa neali, new species; c, Georissa kauaiensis, new species. Type, 131432, Academy of Natural Sciences of Philadelphia; paratype, 59188, Bishop Museum. Georissa neali, new species (figure 1, &). The shell is decidedly shorter than G. cookei, of 2^2 strongly convex whorls. The embryonic shell is inflated, hemispherical, deeply and closely striate across (Trivia-like, as seen from above). Subsequent whorls have a few low, wide, somewhat uneven spiral cords. The aperture is strongly oblique, semicircular, the straight columellar margin heavily calloused. Color white, but probably bleached. Length mm., diam. mm. Type, 131433, Academy of Natural Sciences of Philadelphia; paratype, 59189, Bishop Museum. Georissa kauaiensis, new species (figure 1, c). The shell is light pinkish cinnamon, somewhat more globose than G. neali, with the first whorl of more regular shape, not striate, but showing a faint, close microscopic punctation; 2^ whorls, the last having faint traces of spiral sculpture. Length mm., diam. mm. Type, 131431, Academy of Natural Sciences of Philadelphia; paratype, 59187, Bishop Museum. The type of this species is evidently not adult, but it differs from its fellows so much in sculpture that it must represent another species. The embryonic whorl appears to be larger than in G, cookei, and subsequent whorls are far less strongly sculptured. Very few specimens of these tiny shells have been examined, and their limits of variation are unknown. They are the smallest species yet known in the 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 Pilsbry, Henry Augustus, b. 1862; Cooke, Charles Montague, 1874-; Neal, M
Size: 1463px × 1709px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorp, bookcentury1900, bookdecade1920, booksubjectmollusks
