DESCKIPTIONS OF SPECIES. 61 



1845. FlaheUum (?) cuneiforme Lonsdale. Quart. Jour. Geol. Soc. Loudon, Vol. I, p. 



512. 

 1848. FlaheUum cuneiforme Milne-Edwards and Haltue. Auuales sci. nat., 3d 



series, Vol. IX, p. 266. 

 1851. FlaheUum cuneiforme Milne-Edwards and Haime. Polyp, foss. des Terr. Pal., 



p. 32. 

 1857. Flahelhim cuneiforme Milne-Edwards and Haime. Hist. Jfat. des Corall., Vol, 



II, p. 82. 

 1861. FlaheUum cuneiforme de Fromentel. lutrod. a I'fitude des Polyp, foss., p. 89. 

 1866. FlabeUum cuneiforme Conrad. Check List, p. 2. 

 1890. FlaheUum sp. de Gregorio. Mou. de la Faune eocenique de I'Ala., p. 257, pi. 



xliv, iigs. 23, 24. 



Corallum attached by a short pedicel; shape cuneate, compressed, 

 especially in the lower portion. Often there is just above the pedicel a 

 well-marked thoug-h not large wing, which becomes obsolete in the upper 

 portion of the corallum. Septa of the first, second, and third cycles have 

 corresponding to them costpe, which are sometimes tuberculous in appear- 

 ance. The costse are largest on the middle of the lateral faces. Epitheca 

 fairly well developed, but usually not highly polished. There are girdling 

 lines of growth, and often encircling band-like depressions. The wall 

 frequently has a very ii'regular surface, due to encircling lines of growth 

 and band-like depressions crossing the costfe. The edges of the corallum 

 are irregular, and as high as the wing extends they are acute. Septa rather 

 thin, in five cycles of six systems, iifth cycle not always complete. The 

 appearance is of 24 systems of three cycles each. The first three cycles 

 form the columella by the fusion of their inner margins. Their sides are 

 ornamented with granules arranged in checkered rows; inner margin 

 transversely undulated. Interior of the corallum in lower portion filling up. 

 Caliee deep. Height of corallum, 24.5 mm. This specimen is represented 

 in PL III, fig. 12. 



Localities. — Claibome, Alabama ; Lonsdale cites Eutaw Springs, Wilming- 

 ton, and Cave Hall, South Carolina. The varieties are widely distributed 

 in Alabama, Mississippi, Louisiana, Arkansas, and Texas. 



Geologic occurrence. ClaibomiaU Stage. 



This species is so extremely variable that it is almost impossible to 

 characterize it. The following four or five varieties, which at first appear 

 to be distinct species, can be distinguished. 



I saw in the collections of the Geological Society of London specimens 

 of FlaheUum cuneiforme from Lonsdale's original material. These specimens 



