THE 



GEOLOGICAL MAGAZINE. 



No. LXXVII.— NOVEMBER, 1870. 



I. — Contributions to British Fossil Crustacea. 

 By Henry Woodward, F.G.S., F.Z.S., etc., 

 of tlie British Museum. 

 (PLATE XXII.) 



YEEY few deposits containing organic remains have yielded 

 more beautiful Fossil Crustacea than our London clay forma- 

 tion. In evidence of this, one has only to turn to the beautiful 

 series of plates which illustrate Professor Bell's Monograph, pub- 

 lished by the Palseontographical Society (vol. x. 1857), illustrative 

 of 15 genera and 19 species chiefly from the London area and the 

 Isle of Sheppy. 



Among the specimens which have lately come under my own 

 notice, is a beautifully preserved example of the rare genus Scyllaridia 

 of Prof. Bell, of which a single species, S. Koenigii, has been already 

 described and figured by that gentleman.^ 



The Crustacean which is figured on Plate XXII., Figs. 1, 2, is 

 much smaller than S. Koenigii, and when perfect, probably did not 

 measure more than two and a quarter inches in length, and not quite 

 an inch in the breadth of its carapace ; less, in fact, than half the 

 size of 8. Koenigii ; both the upper and under surfaces are preserved 

 in a very good state, as may be seen by referring to the enlarged 

 Figs. 1ft, and 1&, in our Plate, most ably drawn by Mr. A. T. 

 Hollick. 



Having carefully compared the fossil, both with the original 

 description and with specimens of S. Koenigii, I am satisfied of its 

 specific distinctness ; and in naming it I beg leave to pay a tribute of 

 respect and regard to my friend. Professor Bell, of Selborne, to 

 whom I am indebted for much kindness in past years. 



Scyllaridia Bellii, sp. nov. (PL XXII., Figs. 1 and 2.) 



Description : — Carapace very nearly as broad as long ; finely 

 granulated ; frontal margin straight, equal in breadth to one -half 

 the broadest part of the carapace ; orbits occupying the latero- 

 anterior angles of carapace, apparently less inclosed than in 

 S. Koenigii, upper and inner orbital margin elevated ; cervical furrow 

 transversely dividing the cardiac and gastric regions near the 



1 See Monograph Fossil Malacostracous Crustacea of Great Britain, by Prof. Bell, 

 F.R.S., F.G.S. , Part I., " Crustacea of the London Clay," 1857, pi. viii., figs. 1, 2, 3, 

 Palaeontographical Society's Monographs, vol. s. 



VOL. VII.— NO, LX5VII, 32 



