412 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvm. 



English Lower (irreensiind species witii the Austrian Gosau forms. 

 Felix says: 



Tomes is iiu-lhu'd to refer to leptn/ih. cUivdla Rs., tlie species lirst described )ty 

 Duncan as Ti(rhlnoseris (Icfromciileli from the Lower Greensand of Atherton, and later 

 desifinated by himself [Tomes] as L('i>ti)j>}iyUi<i (OH/Hrii. He determines still another 

 coral from the Lower (ireensand of the Isle of Witjht as Irplojiliiillin irregularis Rs., 

 which is separable from the (losan form only by its somewhat thicker septa and 

 costfe; l)iit mifortunately the nund)er of tliese is not irivcn. However, one obtains 

 the impression, from an insi>ection of the accompanyinjj tiwure, that the number of 

 septa would be essentially smaller than on a specimen of the same size of L. irregu- 

 laris from Gosau. Furthermore, the specific identity of the forms would l)e very 

 surprising when there is so much difference in geological horizon and so great a 

 distance between the localities. 



The genus Tm'hino.serls has ))een discussed in the literature at least 

 ten dilierent times, but as yet no adeciuate description of it has l)een 

 published. A detailed description of the septal and nuiral structure 

 of T(U'h/')i{>S(ris (h'fr(»iii'nt<'li must be published, and sliouid t)e accom- 

 panied by tigures, before it can be known whether the genus should 

 he considered valid or should ])e referred to the synonym}' of some 

 other. 



2. Genus ELLIPTOSERIS Duncan. 



1880. Elliptoseris Duncan, 8ind foss. Corals and Alcyonaria, Palicontol. Indica, 

 Ser. XIV, I, p. 48. 



Genus referred to Lojj/ioserliipe. 



Or'ujlnal generic diagnosis. — "The corallum is simple, conical, com- 

 pressed, with a largely open, elliptical calico. There are cost?e, but 

 no epitheca; there is no columella, but an elongate and deep axial 

 space. The septa are niunerous, and the smaller join those between 

 them near the axial space. There are pali before the joined septa. 

 Synapticulai are numerous in the calice." 



Type species. — EUij)tost-ris aperta Duncan, Sind foss. Corals and 

 Alcyonaria, Pa]a?ontol. Indica, Ser. XIV, I, p. 48, pi. viii, tigs. 8-<). 



Geologic horizon and locality. — Lower Eocene (Ranikot group), 

 Jhirk, India. 



S. Genus GONIOSERIS Duncan. 



1872. (lonioseris Dincax, llrit. foss. Corals, Sup., I't. ;'>, p. L'l. 



Original generic diagnosis. — *'The corallum is simple and free. 

 The base is polygonal in outline and the projecting angles are formed 

 by groups of costa? terminating in septa, l^etween the angles the 

 margin is concave externally. The center of the base is concave. 

 The costa' are niunerous and they cover the base. Man}' converge at 

 each angle along a line leading from the large septum to the center. 

 The upper surface of the corallum is convex, and is divided by masses 

 of septa which are continuous with the angles of the base, and which, 



