. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 460 New Species of Cladophyllia, Prionastraea, and Stylina. 3. Stylina Collinsi, sp. n. (From the Mexican Neocoraian.) Diagnosis.—Corallum massive ; irregularlj nodular ; broad based ; taller than thick. Ccenenchyma variable in width from a mere film to a band as wide as the corallites. The surface is either marked hy the confluent costee or it is smooth or granular between raised calicular margins. Septa thin, in 2 or 3 cycles. The symmetry is octameral. Columella stout, usua
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 460 New Species of Cladophyllia, Prionastraea, and Stylina. 3. Stylina Collinsi, sp. n. (From the Mexican Neocoraian.) Diagnosis.—Corallum massive ; irregularlj nodular ; broad based ; taller than thick. Ccenenchyma variable in width from a mere film to a band as wide as the corallites. The surface is either marked hy the confluent costee or it is smooth or granular between raised calicular margins. Septa thin, in 2 or 3 cycles. The symmetry is octameral. Columella stout, usually appearing as a well-raised knob. Dimensions.— Corallum 50 mm. thick by 60 mm. high by 90 mm. long. Diameter of corallites 1*5-2 mm. Average distance of calicinal centres . 3-3'5 ,, Distribution.—Neocomian. From limestone half a mile from the quicksilver mine at La Trinidad, 4 miles from the town of Guadalcazar, State of San Luis Potosi, Mexico, alt. 6500 feet. Collected by Mr. H. F. Collins, who has kindly presented half of the specimen to the British Museum (Nat. Hist.). Fig. f\\)f^%^.:% Part of surface of the specimen with six caUces. x 6 diam. Affinities.—This coral is a member of the octameral group of Stylina. Its nearest ally is Stylina pachystylina, Koby *, from the Swiss Urgovian. In all probability the two corals are geographical varieties, but with the available material it is unsafe to identify them as the same species. The Mexican * Koby, Mon. Polyp. cr6t. Suisse, pt. i. 1896, p. 20, pi. v. fig. 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 London, Taylor and Francis, Ltd
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