BRITISH FOSSIL CORALS 



3. Caryophyllia Tennanti, Duncan. PI. I, figs. 4 — 6. 



The corallutn has a large base, a curved cylindrical stem, and an inclined elliptical 

 calice. It is short in relation to its broad base. 



The calice is open and shallow. 



The columella is small, and terminates in twelve knob-shaped endings to the 

 fasciculi. 



The septa are unequal, and there are five incomplete cycles. 



The lamina; arc marked with curved lines of granules, are wavy and unequal. 



The pali arc higher than the columellary processes, are wavy, flattened, and curved. 



The costse are sub- equal in the upper third, but are not seen below. 



Height, 1 ird inch. Length of calice, |ths inch. 



LocalUij. Sussex ; Upper Chalk. In the Collection of Professor Tennant, P.G.S. 



This species connects the Cretaceous Caryoplajllice with those of the Tertiary and 

 Recent systems.. 



Fam ily— TURBINOLID^. 



Division TuilBINOLIACE^. 



Genus nov. — Onchotrochus. 



The corallum is simple, tall, slender, ratlier hook-shaped or clavate, and presents 

 evidences of irregular growth. 

 There is no endotheca. 



The costse are rudimentary, and there is no columella. 

 The septa are few in number. 

 The epitheca is pellicular and striated. 



The genus is somewhat allied to Smihtrochus, Siijhirochis, and very distantly to 

 Flahellum. 



... ONCUOTROcnus SERPENTiNUS, Duncctu. PI. VI, figs. 1 — 4. 



The corallum is tubulate, curved superiorly, and straight and tapering inferiorly. A 

 sudden diminution in the diameter of the upper part of the corallum exists. 

 The costcie are quite rudimentary. 

 The epitheca is marked with fine transverse striations. 



