48 BRITISH FOSSIL CORALS. 



dale sp. ; B. Bairdiana, Ed. and H. ; B. geniculata, D'Archiac ; B. Cumingii, Ed. and H., 

 and B. suhcijlindrica, Philippi sj)., may be arranged together to form a subgenus charac- 

 terised by forms with broad adherent bases. The following species will fall into another 

 subgenus whose forms have the base more or less pedicillate : — Balanophyllia prcelonga, 

 Michelotti, sp. ; B. Gravesii, Michelin, sp. ; B. sinuata, Reuss ; B. incequidens, Reuss ; 

 B. fasciadaris, Reuss, and B. Australiensis, Duncan. 



The new species from Brockenhurst, B. (/ranulata, must be received into the first sub- 

 genus. The absence of cpitheca, the profusely granular costae, and the existence of part 

 of the sixth cycle of septa, distinguish B. granulata from all the species already described. 



There is nothing in the species B. granulata to connect it with any geological horizon ; 

 for the BalanopJii/lIiie without epitheca range from the Eocene to the present day. 

 The species B. gramdata has only a generic alliance with those described by Reuss, 

 Roemer, and Philippi. 



Genus — Lobopsammia. 



LoBOPSAMMiA cARiosA, Goldfi/ss, sp. Plate VII, figs. 6 — 10. 



The corallum has a wide base, above which it is slightly constricted. It rises in the 

 form of a short cylindrical trunk, terminated by several gibbous processes, which support 

 calices and project outwards. 



The under surface of the base has a concavity^ which is lined and surrounded for a 

 short distance by a dense epitheca ; the costae radiate around the margin of the epitheca, 

 and ascend the outside surface of the corallum, pursuing very irregular and wavy courses, 

 being thin, rounded, equal, and joined laterally by numerous cross bars of exotheca. 



The costae, which are very faintly granular, have this same peculiarity" on the upper 

 surface of the corallum between the gibbous calices. 



The calices are irregular in shape, and so speedily commence to elongate prior to 

 dividing fissiparously, that simple ones are rarely seen. They are, nevertheless, in the 

 figure of eight, and are situated on the ends of the gibbous projections ; their margins are 

 irregular, the fossa is shallow, and the columella is very feebly developed. 



The septa are very numerous, and form at least five cycles in six systems; they are 

 unequal, stout, and often bifurcate near the columella. 



Height of corallum about one inch ; diameter of trunk /^ths inch ; greatest diameter 

 of calices •[■'jths inch. 



Locality. Brockenhurst, Acy, Auvert, and Vahnondois. 



' Plate VII, fig. 10. ? Plate VII, fig. 7. 



