J925 



TYPE AMMONITES— VI 



DCViA 



Fig. I 



Fig. 2 



Perisphinctes DEVILLEI 



" Brick Pit in field 151, Hartwell Estate, Bucks " (Lee's Catalog) 



Matrix as 2060/H (DCV) ; Bucks C. Mus. (Lee Coll.) 2061/H 



S. 24, 46, 33, 21 ; c. 30 ribs ; 43, 42, 30, 31 ; c. 31 ribs 



S.l. 54, 41, 21 at I4'5 mm. ; delay in showing biplic. stage of DCV 



LYDISTRATITES CUNCTATOR, nov. 

 Paravirgatitan, lyditicus ; Holotype. See DCV 



