Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: The specimen measures 3.5 mm. in height, 10.5 mm. in length through ambulacrum III and interambulacrum 5, and 10 mm. in width. The genital pores were made out above the interambulacra 2,3, and 4, but did not show in area 1, where one doubtless existed. The genital pore is absent in area 5 as a typical character. The ambulacral pores on the ventral side are indicated in Cotteau's figure 7, but he states in the text that they are invisible on the lower side, and I could not perceive any trace of them. This species is easily distinguished from antillarum by its more elevated test and open petals. Oligocene, Anguilla formation, island of Anguilla, Guppy collection ex Cleve, 1 specimen, the holotype, U. S. Nat. Mus. No. 115421. Antigua formation, Willoughby Bay, Antigua, A. P. Brown collector, 1913, 2 specimens, Philadelphia Acad. Nat. Sci. No. 1662. Family CLYPEASTRH) A. Agassiz, 1873. Genus ANOMALANTHUS Bell, 1884. Anomalanthus Bell, 1884, Proc. Xuul. Soc. London, p. 43, plates 2, 3. Type species.—Echinanthus tumidus Tenison-Woods, 1878, Proc. Linn. Soc. N. S. W., vol. 2, p. 169. This genus, Anomalanthus, is based on a Recent species from Australia, but of somewhat doubtful locality. This Recent species with the following are the only species so far attributed to the genus. Anomalanthus gregoryi Lambert. Anomalanthus gregoryi Lambert, 1915, Mem. Soc. d'Agric. de 1'Aube (Troyes), vol. 79. p. 27, plate [unnumbered], figs. 1, 2. The following is a description of this species: Test large, ovoid, subhemispherical, 177 mm. in length, 101 mm. in width, and 57 mm. in height. Apical disk slightly anterior. Ambulacral petals very long, widely flaring, ventrally moderately concave, peristome inframarginal. As the petals, though very flaring, curve in slightly at th...