PLATE XIII. 



Ctenodonta (Pal^oneilo) lirata, Fhillips, sp, (Page 100.) 



Fig. 



1. Phillips'a type specimen, which is abraded in front and defective behind. Pilton. Museum of 



Practical Geology. 



2. Specimen, showing the posterior ridge and concavity, and with indications of the hinge-teeth, 



which have partially pierced the shell-surface, x 2. Bradiford. Barnstaple Athenaeum. 



3. Specimen, very greatly elongated by compression, x f. Saunton. Barnstaple Athenseum. 



4. Specimen, figured by Phillips as Fullastra antiqua, Sowerby. Barnstaple. Museum of Practical 



Geology. 



CtENODONTA ? (PALiEONEILO) ANTIQTJA, SoiVO-ly, ?p. (Page 102.) 



5. Sowerby's original type of Pullastra antiqiia ; the figure is drawn from the cast and mould of the 



specimen combined, X 2. Marv/ood. Woodwardi<TU Museum. 



Ctenodonta ? ELLiPTiCA, Phillips, sp. (P.ige 103.) 



6. Large specimen, showing the ornament, x f. Bradiford. Barnstaple Athenasum. 



Leptodesma citimum, n. sp. (Page 120.) 



7. Large specimen, imperfect ou the wings. 7 «. Anterior view. Marvvood. Museum of Practical 



Geology. 



Mttilauca? modioloides, n. sp. (Page 117.) 



8. Specimen with the margins somewhat obscured by matrix. Brauuton. Museum of Practical 



Geology. 



Cobeacephalus axgulosus, n. sp. (Page 119.) 



9. Specimen of a right valve, showing the augulafced character of the contour and the nature of the 



ornament. X 3. 9 a. Portion of surface, X 15. Top Orchard Quarry. "Woodwardian 

 Museum , 



CtJCULLiEA unilatebalis, (Soweriy.^ (Page 109.) 



10. Specimen of a small cast of the closed valves of a very short variety. 10 a. Upper view. 



Marwood. Museum of Practical Geology. 



11. Small and doubtful specimen witli strong growth-lines, X f . Pilton. Porter Collection. 



MoDiOLA AMTGDALiNA, Phillips. (Page 114.) 



12. Cast of a left valve, X 2. Fremington. Porter Collection. 



DiGONiOMYA elegans, n. sp. (Page 117.) 



13. Large specimen of a cast, showing the dorsal depression and the posterior elongation. Croyde. 



Museum of Practical Geology. 



Pttchopteria damnoniensis, Sowerby, sp. (Page 126.) 



14. Large and peculiarly shaped example, somewhat distorted, X |. 14 «. Portion of surface, X 8. 



Barnstaple. Woodwardian Museum. 



AvicuLOPKCTEN GEANXJLOsus, Phillips, sp. (Page 130.) 



15. Specimen of a cast, showing the wings, X 2. Pilton. Porter Collection. 



