. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. the Genus Stenopora, Lonsdale. 181 Stenopora Jackii^ Nich. & Eth., Jun. Stenopora Jackii, Nich. & Eth., Juu., Ann. & Mag. Nat. Hist. 1879, vol. iv. p. 275, woodcut, fig. 1. Ohs. It is unnecessary for us to repeat the description of this form, as we have nothing fresh to add to the characters which we have previously (loc. cit.) given of it. We have examined some further material; but as the state of preser- vation of all the specimens we have seen is such as to for
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. the Genus Stenopora, Lonsdale. 181 Stenopora Jackii^ Nich. & Eth., Jun. Stenopora Jackii, Nich. & Eth., Juu., Ann. & Mag. Nat. Hist. 1879, vol. iv. p. 275, woodcut, fig. 1. Ohs. It is unnecessary for us to repeat the description of this form, as we have nothing fresh to add to the characters which we have previously (loc. cit.) given of it. We have examined some further material; but as the state of preser- vation of all the specimens we have seen is such as to forbid the preparation of thin sections, we have acquired no new knowledge as to its structure. The species is distinguished by the small size of its stems, the minuteness of the corallites, and the narrow and ring-like annulations of the tubes in the peripheral region of the corallum. It is also remarkable for the distinctness with which it exhibits minute irregularly distributed mural pores. Formation and Locality. Permo-Carboniferous, Coral Creek, Bowen-Kiver Coal-field, North Queensland. {Coll. Geol. Survey, Queensland, and Brit. Mus.) Stenopora informis^ Lonsdale. Stenopora iiiformis, Lonsdale, in Strzelecki's Phys. Descript. New South Wales, p. 2(34, pi. yiii. tigs. 4, 4rt (1845), Ohs. The figured type of this species, now in Museum, is a portion of a sublobate mass, preserved in a light brown rock, and itself silicified. It is about 2 inches wide and an inch or rather more in height, and its general appearance is very faithfully given in Lonsdale's figure [loc. cit.). The speci- men comprises the outer portion of a large corallum, and shows that the tubes, which are approximately vertical in the centre of the mass, radiate outwards in all directions with a gentle inclination. In the deeper parts of the mass the tubes are in the main cylindrical, but are swollen at intervals, the swellings being of but small intensity and being placed at correspond- ing levels in contiguous
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