. Bulletin - United States National Museum. Science. EAELY PALEOZOIC BEYOZOA OF THE BALTIC PROVINCES. 223. Kuckers shale (C2), Baron Toll's estate, near Jewe, and from Reval, Esthonia. Plesioty'2)e.—Cat. No. 57302, British Museum, one thin section from the Kuckers shale, Baron Toll's estate. STELLIPORA CONSTELLATA Dybowski. Plate 4, figs. 9, 9a. StelUpora constellata Dybowski, Die Chaetetiden der Ostbaltisclien Silur-For- mation, 1877, p. 48, pi. 3, figa. 9, 9a. I have not encountered this species in the collections studied and must therefore Hmit my remarks to Dybowski's description
. Bulletin - United States National Museum. Science. EAELY PALEOZOIC BEYOZOA OF THE BALTIC PROVINCES. 223. Kuckers shale (C2), Baron Toll's estate, near Jewe, and from Reval, Esthonia. Plesioty'2)e.—Cat. No. 57302, British Museum, one thin section from the Kuckers shale, Baron Toll's estate. STELLIPORA CONSTELLATA Dybowski. Plate 4, figs. 9, 9a. StelUpora constellata Dybowski, Die Chaetetiden der Ostbaltisclien Silur-For- mation, 1877, p. 48, pi. 3, figa. 9, 9a. I have not encountered this species in the collections studied and must therefore Hmit my remarks to Dybowski's description and fig- ures. According to that author, the zoarium is lamellate and made up of star-shaped clusters 6 to 8 mm. in diameter and 2 to 3 mm. dis- tant from each other. Each star consists of five to eight elongate, spindle-shaped, rhom- boidal elevations arranged radially. The clusters have no polygonal areas segregat- ing them, but are arranged sometimes so closely that the radii become confluent. Dybowski's illustration of the internal structure is sufficient to show tliis species to be a typical StelUpora and closely related to the preceding S. revalensis. Indeed, it is possible that they are identical species, the main difference being the occurrence of thin polygonal raised areas surrounding the maculae in S. revalensis. As remarked be- fore, this occurrence is not always constant in a species and the type of S. constellata may have happened to be without them. Occurrence.—^According to Dybowski, the species occurs in his zone 2 at Hohenholm on the island of Dago. If in place, the specimen would probably have come from the Lyckholm Hmestone (Fl) STELLIPORA APSENDESOIDES, new species. Text fig. 124. Zoarium a single, incrusting, rounded cluster of zooecia and meso- pores, mm. in diameter and less than a milhmeter thick. Surface exhibiting 12 radially arranged, sharply elevated, thin ridges bearing small, subcircular zooecia, mm. in diameter. Depressed areas betwe
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