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cyathus of the Trochosmiliaceae. They may be regarded as Conosmilae 



with pali and without a columella, or Conocyathese with endotheca and 



without the peculiar cyclocostal arrangement which is so thoroughly 

 Turbinolian in its character. 



Cyathosmilia (new genus). 



Simple pedicellate corals with endotheca and pali. No columella. 



Cyathosmilia laticostata n. sp., pi. 1, fig. 2. 



Coralhim small, curved, slightly compressed in the direction of the 

 curve, tapering towards the pedicel, which is very small and concave, 

 bearing a crest at the outer edge of the curve, which is composed of 

 irregular projections. Costa, simple, broad, raised, rounded, separated by 

 very narrow grooves (which correspond with the tertiary septa, while the 

 costae correspond with the primaries and secondaries), terminating in 

 regular angular points at the edge of the calice, giving it a coronate 

 appearance. Epitheca, conspicuous in concentric folds of irregular width, 

 and undulating over the costa. Calice, broadly elliptical. Fossa, shallow, 

 in fact only the slightest depression is perceptible. Systems : six, with 

 three cycles. Septa, not exsert, granular, primaries and secondaries equal, 

 thick, wedge-shaped ; tertiaries thin, small, inconspicuous. Pali, before 

 primaries and secondaries only, thinner than septa, slightly exsert, prim- 

 aries only half the size of secondaries. Endotheca filling up space between 

 pali, septa, and fossa, and rather numerous ; stages very rare between 

 septa, except at the base. Wall, thin, dotted with deep pits, or pairs of 

 pores, on opposite sides of the septa. These are not visible except in 

 worn specimens where the epitheca is absent ; otherwise it covers them. 

 Dimensions — Alt. 6 to 11, major axis 2^ to 5, minor 2 to 4. 



Aldinga, about a dozen specimens, but very few complete. In all 

 the larger ones the broken ends ©f the septa are very distinctly seen to 

 be composed of two thick laminae pressed together. In these specimens 

 also the intercostal space is flat, wide, and shallow. The centre corres- 

 ponds to the tertiary septa, and has pores on each side which are distinct, 

 regular, and apparently deep. There were fragments of corals collected 

 which, if perfect, would have been twice the dimensions given. 



Cyathosmilia 1 tenuicostata n. sp., pi. 2., fig. 3. 



I give this name to a single specimen of a conical corallum with a 

 rather broad, blunt, cylindrical pedicel, which is granular, and does not 

 seem to have been adherent. Costce corresponding with septa, granular 



H 



