PROF. E. FORBES ON LOWER GREENSAND FOSSILS. 247 



66. Avicula pectinata Sow. in Fitton, Gr. T. 2d ser. t. iv. pi. 14. 



f.3. 



Loc. Ingoldsthorpe, Parham, Risborough, Folkstone. 



67. Avicula lanceolata. Sp. nov. PL 3. f. 8. 



A. testa convexiuscula, subtriangulari, lanceolata, trans- 

 verse undulato-substriata, ala oblique abbreviata, margine 

 cardinali recto, umbonibus excentricis. 



Lon. max. 0^ ; lat. 0^ unc. 



Shell very oblique, lanceolate and depressed, tumid near the 

 excentric beaks, eared at both sides. The posterior auricle does 

 not extend quite to the length of the shell, and is not so strongly 

 separated from the body of the shell as the anterior. The hinge 

 line is not quite straight. The surface of the shell is marked with 

 undulated, more or less obsolete striae ; the cast is smooth. 



Loc. Peasemarsh, Atherfield, Parham, Hythe. 



68. Avicula depressa. Sp. nov. PL 3. f. 7. 



A. testa depressa, late triangulari, alata, transverse undu- 

 lato-sulcata, ala sinuata, margine cardinali recto, umbonibus 

 terminalibus. 



Lon. 0^ ; lat. Ofi unc. 



A much depressed, broad, triangular shell, having the posterior 

 auricle much developed and expanded, its edge being sinuated. 

 The hinge margin is straight and the beaks are nearly terminal in 

 consequence of the suppression or minute size of the anterior 

 auricle. The surface is sulcated transversely, and the sulcations 

 are undulate. 



Loc. Atherfield. 



69. Avicula ephemera. Sp. nov. PL 3. f. 6. 



A. testa depressa, lanceolata, laevigata, ala abbreviata, mar- 

 gine cardinali recto, umbonibus subterminalibus. 



Lon. 0^- ; lat. 0^ unc. 



A small, delicate, lanceolate, much depressed species, with the 

 posterior auricle produced into a short wing, and the anterior one 

 very small. The surface appears to have been smooth. The hinge 

 margin is straight, and the beaks, in consequence of the form of 

 the auricles, nearly terminal. 



Loc. Atherfield. 



70. Inoeeramus eoncentricus Parkinson. (Sow. M. C. t. 305.) 



Loc. Near Blackgang Chine, Isle of Wight. (In Dr. Fitton's 

 collection.) 



71. Inoeeramus, a species allied to Gryphoides, but much de- 



pressed. Not sufficiently perfect for certain determination. 



Loc. Pulborough. 



R 4 



