THE 



GEOLOGICAL MAGAZINE 



NEW SERIES. DECADE V. VOL. III. 



No. VIII. — AUGUST, 1906. 



OK,TC3-XIsr.A.IL. J^iaTICIjiES. 



I. — CiRRII'KDES FllOM THE TrIMMINGUAM CuALK ANIJ OTHER 



LOCALITIES IN NoRFOLK, 



Uy Henry Woodward, LL.I)., F.R.S., P.G.S. 



(WITH FORTY-ONE TEXT-FIGURES.) 



SOME years since Mr. Reginald M. Brydone, F.G.S., placed in my 

 hands a number of fossil Cirripedes from the Chalk of 

 Trimmingham, Norfolk,' with the request that I would describe 

 them. Others have lately been sent to me by Mr. Clement Keid, 

 F.R.S., from his private collection and from the Geological Survey 

 Museum ; also a set of Chalk Lepadidae from Dr. Arthur Kowe, 

 F.G.S., of Margate, collected by him in the vicinity of Norwich. 

 I now take up the study of these too long neglected specimens. 



1. BRAOIIYLErAS ORETACEA, H. Woodw., 1901. 



Pijrgoma crclacca, H. Woodw., 1868: Geol. Mag., Vol. V, p. 'i.OS, V\. XIV, 



Figs. 1, 2. 

 PoUicipes cancellatns, Mar.sson, 1880 : Cirrip. d. Weiss. Schreib. Kreide d. Riigen, 



p. 24, Taf. ii, %. 7«. 

 Brachtjlepas cretacea, II. Woodw., 1901 : Geol. Mao., Dec. IV, Vol. VIII, p. 145, 



PI. VIII, FigH. 3-5. 



In a contribution to "British Fossil Crustacea," made in 1868,^ 

 I figured and described a portion of a Cirripede from the Chalk of 

 Norwich under the name of Pyrgoma cretacea. 



No further notice of this species occurred until 1901, when 

 Dr. Arthur Rowe kindly placed in my hands a specimen obtained 

 by him from the Norwich Chalk, which threw a most important 

 light on this interesting fossil, proving it to be quite distinct from 

 the genus Pyrgoma, and worthy to form a new genus, having 

 characters which might serve as a connecting link between the 

 more ancient Pedunculata and the more modern Operculata.' 

 A reference to this paper will sliow that Brachjlepas had a series of 

 three or four verticillate whorls of small scale-like imbricated plates, 

 forming the base of the capitulum supporting the rostrum and carina 



' For an account of this interesting deposit see " The Stratigraphy and Fauna of 

 the Trinimiughaiu Chalk," by R. M. Brydone, 1900, 8vo, pj). 16, with diagrams ; 

 Dulau & Co., price l.v. (separately punlishcd). Also "Further Notes on the 

 Trimmingham Ch.ilk, Norfolk," by R. M. Brydone, F.G.S., Geol. Mag., 1906, 

 January, pp. 1.3-22, Plates II and III ; Febniary, pp. 72-78, Plates IV and V ; 

 March, pp. 124-131, Plates VIII and IX ; and July, pp. 289-300. 



2 Geol. Mao., 1868, pp. 258, 259, PI. XIV, Figs. 1, 2. 



3 Geol. Mag., Dec. IV, Vol. VIII (1901), pp. 145-152, PI. VIII, Figs. 3, 4. 



DECADE V. — VOL. HI. — NO. VIII. 22 



