84 Reviews — The Paloeontographical Society. 



have been examined, for very often this is the only way to arrive at 

 a satisfactory conclusion. 



This first part of Mr. Woods' Monograph deals with the 

 Nuculanidae, the Nuculidae, the Anomiidte, and the Arcidae. Tlie 

 arrangement of the species of each genus is in the main strati- 

 graphical. 



The Cretaceous members of the family Nuculanid^e are comprised 

 in the genus Niiculana, H. F. Link, and range from the Crackers 

 and Atherfield Clay of Atherfield, through the Gault and Upper 

 Greensand, possibly into the Chalk Rock. It is found also at several 

 horizons in the Speeton Clay, a new form, N. Speetonensis, being 

 described from the Speeton Clay of Speeton, upon specimens 

 in the British Museum (Natural History) and in the Museum of 

 Practical Geology, but their precise horizon is not recorded. 



The only representative of the family Nuculidae is the genus 

 Niicula, Lamarck, which occurs in the Speeton Clay, and ranges from 

 the Lower Greensand through the Gault and Upper Greensand, 

 possibly into the Chalk Eock. A new species {N. Lamplnghi) , the 

 types of which are in Mr. Lamplugh's collection, is described from 

 the Speeton Clay (D 4) of Speeton. 



The Cretaceous Anomiidte are comprised in the genus Anomia, 

 Linnseus, which ranges from the Lower Greensand through the 

 Gault, Upper Greensand, and Cambridge Greensand, into the 

 Totternhoe Stone. 



The family Arcidee is represented by the genera Area, Linnaeus 

 {sensu striclo) ; Barhaiia, J. E. Gray ; Grammatodon, Meek & Hayden ; 

 Trigonoarca, T. A. Conrad ; Cucullcea, Lamarck, with the new sub- 

 genus Dicranodonta ; Isoarca, G. Miinster ; Pecttmcnlus, Lamarck ; 

 and Limopsis, A. Sasso. The subgenus Dicranodonta is proposed for 

 W. Keeping's Cucidlcea Donning tonensis, the t^'pes of which came 

 from the Claxby Ironstone, Benniworth Haven, and are preserved 

 in the Woodwardian Museum, Cambridge; but the species is also 

 recorded from the Lower Greensand of Upware. The author places 

 with a query in this same subgenus the species which W. Keeping 

 described as Pectunculus ohliqims from the Lower Greensand of 

 Upware ; and he considers that the form described by Keyserling 

 and by Schmidt as Pectunculus Petschorce probably also belongs here. 

 A new species of Pectimcidus (P. eughjphus) is founded upon three 

 specimens in Mr. Meyer's collection from the Chalk Marl (Meyer's 

 bed ii) of Dunscombe, and a new species of Limopsis (Z. albiensis) 

 upon some specimens from the Lower Gault (zones ii, iii, and vii) 

 of Folkestone, that are preserved in the Museum of Practical 

 Geology, Jermyn Street. 



3. A Monograph of the British Carboniferous Lamellibranchiata. 



By Wheelton Hind, M.D„ etc. Part IV : Edmondidje, 



Cyprinidje, Crassitellidae. pp. 277-360 ; pis. xxvi-xxxix. 



In the present part the author deals with the rest of the 



Edmondidai, comprising, in addition to those treated of in part iii, 



the genera Sedgwiclcia, M'Coy ; and Edmondia, De Koninck, with the 



subgenus Scaldia, De Ryckholt. Sedgicickia is represented by five 



