Geological Society. 629 



Since tlie above was written, I liave liad the pleasure of 

 receiving from Professor J. G. Andersson another (alco- 

 holicj specimen of Ericins przewalskd from Tabool, Mon- 

 golia. This one is a male, somewhat paler than tiie 

 female, especially on the head, its length from snout to 

 vent is about 235 mm,; hind foot (s. u.) 43 mm.; tail 

 31 mm. ; ear 33 mm. Tlie cranial measurements are some- 

 what similar to those recorded above; the nasals are a little 

 longer and on both sides in contact with the maxillaries. 

 Although the specimen is old, the sagittal crest is only 

 little developed. 



PltOCEEDINUS OF LEAllNED SUCIKTIES. 



GEOLOGICAL SOCIE'lT. 



January 4lh, 1922.— Dr. G. T. Prior, F.ll.S., 

 Vice-President, in the Chair. 



The following communication was read : — 



' ShiLs-with-Beef, a Soiiuence in the Lower Lias of the Dorset 

 Coast.' 



Part I. — Stmtigraphical. Bv William Dickson Lang, 

 Sc.D., F^.G.S. 



The Shales-with-Beef lie between Table Ledge below and the 

 Birchi Bed above, and consist of an upper 3U feet of brownish 

 paper-shales with selenite, ' beef,' and limestone-nodules and 

 lenticles ; and a lower 40 feet of bluish conchoidal marls with 

 iudurated marl-beds, beef, and limestone-nodules and lenticles. 



The following are the main pala^ontologieal divisions : — 



«■ ^ (76a. Birc/u'-tabular. Mic rod eroc eras birchi. Arietites turneri, 

 ~ ^- 2 j Xipheroceras spp., Cyinhiteg. 



g § -^ -^ } 75 17. Bi)-c/ii-nodular. M. birchi, Ar. plotti, and allied forms. 



■" '« '1 S-. ' - 



^ •«»! O' I ^'^ h-ic. Microderoceras spp. aud Arittites spp. 



»■ ^'-Jp (7ie-g. Arnioceras ha rtm'tnni and aMied toTms. 

 • ? :*- ^ 1 

 .-^ S fe a. J ''^'^~^- ■^^' brooki. 



C £ "^ '""' i '*^/"''4^- -Arnioceras spp., Arietites new spp., Sulciferites [Spath] 

 ^ ^ (g V spp- 



grA (lOa-e. Parorniooeros [Spath] alctjioe and allied forms, Jr»»io- 



« "2 ^- » I ceras spp. 



S cj 2 g '^^ 



"3 CO S S ■^ 62a-69c. Arnioceras spp., Agassiceras spp., but no Aij. striaries. 



*- ' ^ o 5 I 



P 'S § 55-61 6. Do., but with A'jnssiceras striaries.' 



"^ ''J "^ \ 53-51:. JlruiocecdA-, characteristic new spocies, and allied forms. 



