Palaeozoic Corals from Northern Queensland. 267 



and the tubular " constrictions " are very numerous and 

 strongly marked ; but no satisfactory evidence was forth- 

 coming of the ultimate closing of the tube-mouth in S. ovata, 

 as described in S. tasmaniensis. 



In the form described under the name of Stenopora crinita, 

 Mr. Lonsdale observed that the additional or interpolated 

 tubes sometimes sprang " from the lines of contraction, but 

 sometimes commenced in the spaces between them." 



In a table of fossils attached to a paper by Murchison and 

 De Verneuil on the Permian System of Russia*, the name 

 Tubuliclidia (Lonsdale) is used instead of Stenopora, and two 

 additional species are there mentioned, S. spinigera and S. 

 crassa. 



In Murchison's 'Geology of Russia' the name Tubuliclidia 

 is retained f in a similar table of fossils ; but in an appendix | 

 to this work the name Stenopora is again made use of, and 

 Tubuliclidia relegated to the synonymic list. The two species 

 previously mentioned are here described and figured ; and 

 although Lonsdale says nothing about the presence of tabula?, 

 if we mistake not, they are distinctly figured in one of the 

 illustrations of S. crassa §. 



In 1848 Prof. J. D. Dana || pointed out that the diagnosis 

 of Stenopora by Lonsdale was insufficient, and redefined it as 

 follows : — " Internal structure of corallum fine, prismatic ; 

 cells of surface minute, subangular, contiguous ; zoophytes 

 glomerate or ramose ; surface often small- verrucose." This 

 definition adds nothing to our knowledge of the genus as 

 worked out by Lonsdale. 



In 1849 the same author referred^ all Lonsdale's species of 

 Stenopora to the genus Cliaitetes', but, at the same time, he did 

 not fail to notice the peculiar tube-accretions, termed by 

 Lonsdale "constrictions;" and he likewise confirmed the latter's 

 observation on the occasionally hollow nature of the branches 

 in the ramose species. Dana, in addition, described a new 

 species as Chcetetes gracilis**, which appears to be con- 

 generic with S. tasmaniensis and S. ovata. 



Messrs. Milne-Edwards and Haime, in their memoir on the 

 Perforate and Tabulate Zoanthariaff, define Stenopora as a 

 Chwtetes with small styliform processes at the angles of the 

 calices, and give as their type S. spinigera, Lonsdale. 

 This definition was repeated in their Introduction to their 



* Bull. Soc. G<3ol. de France, 1844, ser. 2, i. p. 475. 



t Vol. i. 1845, p. 221. % P- 631. § Tab. A. fig. 12, a. 



|| Wilkes's U.S. Explor. Exped. Zoophytes, p. 537. 



H Ibid. Geology, pp. 711, 712. ** P. 712, t. 10. fig. 15. 



tt Oomptee Kendus Ilebd. 1849, xxix. p. 201. 



