1867.] 



TATE AliDIOXITES-AXGrLATTJS ZO^'E. 



Table {continued). 



313 



Species. 



2 

 1— i 



1 



s 





1 



1 





Serpula olifex, Qiienst 



c. 

 ^' 



T.C. 



V. c. 



c. 



r. 

 V, r. 



Y. r. 











capitata, Phil, 



Cidaris Edwardsi, Wr 



Hemipedina Becliei, Wr 



Pentacrimis Briareus 



Ophioderma, sp 







hibernia, DimJc 



Septastrsea Fromenteli 



Oppelosmiliagemmans, Dunk, 





[The list of corals given by Dr. Duncan from Erocastle is not included in 

 this table.] 



YII. Desceiptioxs of Xew Species. 

 pLErEOTOMAPvLi (CpvTpt^xia) Betcei^ spec. noY. 



Shell subdiscoid, depressed ; test thin. "WTiorls four, nearly flat 

 or slightly concaye ; bluntly carinated ; upper surface of the whorls 

 transversely striated, base convex, smooth ; callosity large, circum- 

 scribed by a sulcus, slightly excavated near the columella-lip. 

 Siphonal band narrow rather above than below the keel. Aperture 

 subtriangiilar. 



P. Brycei is somewhat intermediate between P. ccujpa and P. ecc- 

 pcmsa; it is related to the latter by the concave and carinated 

 whorls, by the band being above the keel, and by the large callus, 

 but differs in its more regularly conoid form, without the ventricosity 

 of the under surface, and by the absence of the raised border to the 

 posterior suture. 



Locality. Island ]Magee, co. Antrim. Collected by W. Gray, 

 Esq. 



The species is dedicated to Dr. Bryce, F.G.S., in remembrance of 

 geological excursions made together in the J^ortb. of Ireland. 



CEEiTHirii Ttloei, spec. nov. 



Shell turreted, elongated, 10 whorls separated by a deep sutui'e, 

 concave and ornamented by about twenty very prominent curved 

 ribs ; ribs and sulci smooth ; base slightly carinated, smooth or faintly 

 radiated (resulting from the prolongation of the ribs of the last 

 whorl) ; canal short. 



Dimensions. Length 6 millim., height of last whorl 1-5 m., breadth 

 of last whorl 1*5 m. 



Affinities and Differemes. By its ornamentation closely allied to 

 C. Arduenneiise, Piette, and C. Henrici, Martin ; but the ribs in the 



