508 R. TATE ON THE LIAS ABOUT RADSTOCK. 



dium) which have passed through my hands, not one makes an 

 approach to the form of this species. Length *4 inch ; height -35 

 inch; thickness '25 inch. 



Zone of Am. Jamesoni, Munger. Six examples. 



Cakdinia rugulosa, spec. nov. Fig. 3. 



Ovate, transverse, compressed ; umbones contiguous, small, in- 

 curved and anterior ; lunule small, shallow, and cordate ; escut- 

 cheon lanceolate, deep ; hinge-line slightly arched, anterior side 

 rounded, front straight, posterior side obliquely truncated ; surface 

 ornamented with thick folds of growth, the umbonal ones with 

 erect lamellose edges. Length *6 inch ; height *4 inch ; thickness 

 •25 inch. 



I know no adult shell with which this can be associated ; if it be 

 an immature form, it is then separable from G. attenuata, Stutchbury, 

 C. Listen, var. hybrida, Sow., and G. antiqua, Phillips, with the 

 young shells of which I have compared it. 



Zone of Am. Jamesoni, Munger. Three examples. 



Appendix. 



List of Species from the Yellow Lias, Hewlett's Hill, Cheltenham. 



In my paper on the A.-Jamesoni beds of Cheltenham, no notice was 

 taken of the fossils from the " Yellow Lias," placed by Oppel on 

 the horizon of Ammonites ibex. Researches made in other districts 

 induced me to suppress this zone, though the prevailing Ammonites 

 are very restricted, as the majority of the species are thoseof the A.- 

 Jamesoni series. A list of the species may be serviceable for com- 

 parison; the prefixed sign (!) indicates that specimens have been 

 examined by me : — 



Ammonites centaurus, D' Orb. fide ! Inoceramus ventrieosus, Sow. 



Modiola scalprum, Sow. ( Oppel). 

 Henley i, Sow. ! Macrodon Buckmani, BucJeman. 



fimbriatus, Sow. 1 intermedium, Simpson. 



ibex, Quenst. *| Area Stricklandi, Tate {BucJeman). 



Loscombi, Sow. \ni q ? I Leda galathea. If Orb. 

 Maugenesti, If Orb. < Q PP - 



! minor 



Valdani, If Orb. ! Cypricardia cucullata, Goldfuss 



! Belemnites umbilicatus, Blainv. ! Hippopodium ponderosum, Sow. 



! clavatus, Schloth. ! Cardium truncatum, Sow. 



\ Pleurotomaria similis, Sow. \ Oardinia attenuata, Stutch. 



! Eucyclus imbricatus, Sow. ! Arcomya elongata, Bom. 



I Chemnitzia undulata, Ziet. (Brodie). ! Pholadomya ambigua, Sow. 



! Trochus acutus, Schloth. v. 2. ! Pleuromya ovata, Bom. 



! Turbo admirandus, Tate. ! Terebratula punctata, Sow. 



! Solarium inornatum, Tate {Brodie). ! Bhynchonella furcillata, BucJeman. 



! Dentalium angulatum, Buckman. ! subconcinna, Davids. 



! Actseonina marginata, Simpson. ! Spiriferina c rostrata, Schloth. {BucJem.). 



I Pecten prisous, Schloth. ! Ditrypa quinquesulcata, Goldfuss. 



! Hinnites tumidus, Ziet. ! Pentacrinus moniliferus, ") 

 ! Lima Hermanni, Ziet. Quenst. n-, 



! Limea acuticosta, Goldfuss. robustus, Wright )■ jv r i ht 



! Avicula longiaxis, BucJeman. Acroura Brodiei, Wright \ " 



I Gervillia lsevis, BucJeman. Ophioderma Gaveyi, Wr. J 



