276 Dr. H. A. Nicholson and Mr. B. Etheridge, Jun., on 



meter, and gradually tapering to their free extremities. The 

 corallites are nearly vertical in the axial portion of their 

 course, but ultimately bend outwards nearly at right angles 

 to the imaginary axis of the branches, and open on the sur- 

 face by rounded calices which are free from any obliquity. 

 As the terminations of the branches are approached the angle 

 of deflection of the corallites becomes less and less, and the 

 horizontal portion becomes shorter and shorter ; until at the 

 extremity the whole of the corallites are nearly vertical. 

 Average diameter of the corallites from T V to ■£$ inch, smaller 

 tubes being intercalated among those of average size as the 

 surface is approached. Annular thickenings of the hori- 

 zontal portions of the tubes narrow and ring-like, about five 

 occupying one line, this being the total length, in general, of 

 the arinulated portions of the corallites. Mural pores minute, 

 irregularly distributed. Surface not observed. 



Obs. This is a graceful and well-marked species, easily 

 distinguished from 8. ovata and 8. tasmaniensis of Lonsdale 

 by its habit and general proportions. We should have been 

 inclined to refer it to 8tenopora (Chietetes) gracilis, Dana, 

 had it not been for the fact that Dana lays stress upon the 

 length of the tubes in the latter species, as well as upon the 

 remarkable paucity of annulations in the same. 



In the present species, on the other hand, the annulations 

 of the tubes in the horizontal portions of their course are 

 much more numerous than in 8. tasmaniensis, Lonsd., while 

 it differs conspicuously from 8. ovata, Lonsd., in its size and 

 general proportions. The presence of minute irregularly 

 placed mural pores can be readily made out in specimens 

 which are longitudinally fractured, by an examination of the 

 exterior of the tubes under low powers of the microscope. 



Locality and Horizon. Permo- Carboniferous, Coral Creek, 

 Bowen-River Coal-field, N. Queensland. 



Collector. R. L. Jack, Esq., F.G.S. 



Stenopora? sp. 



Obs. Among our specimens from the Daintree collection 

 we have numerous examples of a ramose coral which, from its 

 general appearance, can only be regarded as a species of Steno- 

 pora, but which, so far as we can make out, does not exhibit 

 the peculiar internal structure of this genus as typified by 

 8. ovata, and which we, therefore, think may possibly be a 

 Monticulipora, D'Orb. The specimens in question occur 

 abundantly in a curious chloritic conglomerate (of Devonian 

 or Carboniferous age?), which is largely impregnated with 

 a grass-green chloritic or serpentinous mineral ; and none 



