224 DE. G. J. HKfDE ON SEPTASTEJEA, d'oRBIGNY (1849), 



Septaste^ia Haimei, Dimcan. 



1858. Isastrcea Raimeii, Wright, Quart. Journ. Geol. Soc. vol. xiv. 

 p. 35. 



1867. Septastrcea Haimei^ Duncan, Brit. Poss. Corals, Suppl. 

 Pal. Soc. pt. iv. no. 1, pp. 5, 6, pi. i. figs. 1-5. 



This form is of a type quite distinct from 8. Forhesi, and it is 

 evident that it does not belong to the same genus, Septastroea. 

 The upper portion of the corailites is not filled with stereoplasm, 

 the septa only occasionally reach the centres of the calices, and 

 they are stated to grow by fissiparity, produced by two large septa 

 stretching across the calices and uniting. Dr. Wright states that 

 the form is from the Lower Lias, near Evesham, Warwickshire ; 

 whereas Prof. Duncan * asserts that it is from Street, in Somerset- 

 shire, and that Dr. Wright is answerable for its discovery in this 

 locality (Z. c. p. 6, note). 



Septaste^a Feomek"teli, Terquem et Piette. 



1865. Septastrcea Fromenteli^ T. & P. Mem. Soc. Geol. de Prance, 

 2e ser. t. viii. p. 129. 



1867. Septastrcea Fromenteli, Duncan, Brit. Possil Corals, Suppl. 

 pt. iv. no. 1, p. 37, pi. X. fig. 5. 



This species is closely allied to the previous one, and for the 

 same reasons it will have to be excluded from the genus Septastrcea. 

 It occurs in the Lias of Marton, near Gainsborough, and other 

 localities. 



Septaste^a Eveshami, Duncan. 



1868. Septastrcea EvesJiami, Duncan, British Poss. Corals, Suppl. 

 pt. iv. no. 2, p. 52, pi. xiii. figs. 5-7. 



This species also is allied to S. Haimei ; the walls are thin 

 throughout, the corailites not filled above with stereoplasm, and in- 

 crease is stated to be by fission ; in all these features it difi'ers from 

 the true Septastrcea. The specimen is from Lias strata, at Evesham, 

 Warwickshire. 



Septastejea ceassa, de Promentel. 



1879. Septastrcea crassa, de Prom. Paleont. Prangaise, livr. 28, 

 t. viii. p. 486, pL 123. fig. 2. 



The description and figures only relate to the surface-characters 

 of the form ; these, however, are sufficient to indicate that it is 

 distinct from the Miocene Septastra^a. The form is from the 

 Neocomian at Sault (Yaucluse), Prance. 



Septastejea ambigtja, de Promentel. 



1879. Septastrcea amhigiia, de Prom. Paleont. Pranc. livr. 28, 

 t. viii. p. 486, pi. 133. fig. 1. 



* The type of this species is now in the Brit. Museum Nat. Hist., and I have 

 the authority of Mr. Elheridge, F.R.S., for stating that it bears no evidence of 

 having been derived from the Lias of Street. 



