330 THE PORTLAND OOLITE PERIOD. CHAP. 



MONOMYARIA. 



Exogyra nana. Sow. K. C. Shotover. 

 spiralis. Goldf. P.R. Brill. 

 GerviUia. sp. P.R. Shotover. 

 Gryphsea dilatata. Sow. P. R. Shotover. 



virgula. Defr. K. C. 1. Shotover, Hartwell, &c. 

 Inocerainus. sp. P.R. Shotover. 

 Lima obliquata. Sow. P. R. Thame. 



rustica. Sow. K. C. u. Hartwell. 

 Ostrea deltoidea. Sow. K. C. 1., m., u. Hartwell, Studley. 



expansa. Sow. P. R. and P. S. Brill, Stone, Shotover. 



falcata. Sow. P.R. Swindon. 

 Pecten arcuatus. Sow. K. C. u. Hartwell. 



distriatus. Leym. K. C. u. Hartwell. 



lamellosus. Sow. P. R. and P. S. Shotover, Brill. 



nitescens. n. s. Phil. K. C. u. Wheatley cutting. P. R. Shotover. 

 Perna mytilloides. Lam. K. C. u. Hartwell. P. R. Shotover, Brill. 

 Pinna granulata. Sow. K. C. u. Hartwell. 



lanceolata. Sow. K. C. u. Wheatley cutting. P. R. Shotover. 



This list of species is much reduced from those of earlier date 

 in the oolitic system. Ostrea deltoidea in the Oxford district is 

 confined to the Kimmeridge clay ; its ally, Ostrea expansa, to the 

 Portland rock. 



DIMYAEIA. 



Astarte cuneata. Sow. P. R. Shotover. 



Hartwellensis. K. C. u. Hartwell, Culhara. 

 ovata. Sow. K. C. u. Hartwell. P. R. Shotover. 

 Cardium dissimile. Sow. P. R and P. S. Shotover, Brill, Swindon. 

 striatulum. Sow. K. C. u, Hartwell, Wheatley, Culham. 

 Cucullaea trans versalis. n. s. Phil. P. R. Swindon, Shotover. 

 Cytherea rugosa. Sow. P. R. Swindon. 

 Isocardia minima. Sow. K. C. u. Hartwell, Wotton-Basset. 

 Leda Oxoniensis. n. s. P. R. Shotover. 

 Lithodomus. sp. P.E. Shotover. 

 Lucina lineata. Sow. K. C. Wotton-Basaet. 



Portlandica. P. R. Swindon. 



Modiola bipartita. Sow. K. C. u. Hartwell, Wotton-Basset. P.R. Brill. 

 pallida. Sow. P.R. Brill. 



pectinata. Sow. K. C. Wotton-Basset. P. R. Shotover, Swindon. 

 pulcherrima. Goldf. P. R. Shotover. 

 Myacites corbiformis. n. s. Phil. P. R. Shotover. 

 cuneatus. n. s. Phil. P.R. Shotover. 

 oblatus. K. C. Wotton-Basset. 

 parallelus. n. s. P. R. Swindon, Shotover. 

 recurvus. Phil. K. C. Wotton-Basset, Hartwell. 

 Mytilus unguiculatus. P. R. Shotover, Brill. 



