xii. AMMONITES. FISHES. 305 



Ammonites Duncani. Sow. O. C. Wolverton. 

 excavatus. Sow. C. O. Heddington. 

 gemmatus. Phil. O. C. St. Clement's. 

 Gowerianus. Sow. 0. C. Islip, Summer-town. 

 ingens. F. and P. C. E. Heddington. 

 Jasoni. O. C. Summertown. 



Lamberti. 0. C. Oxford. 

 Mariee. D'Orb. 0. C. Summertown. 

 oculatus. Phil. 0. C. Summertown. 

 perarmatus. Sow. C. G., C. 0. Heddington. 



plicatilis. Sow. C. G., C. 0. Heddington. 

 Sutherlandiae. Sow. C. 0. Well in Oxford. 

 triplex. Sow. C. O. Shotover. 

 varicostatus. Buck. 0. C. Hawnes near Bedford. 

 vertebralis. Sow. C. 0. Heddington. 



Belemnites abbreviatus. Mitt. C. O. Heddington. O. C. St. Clement's. 

 hastatus. Blainv. O. C. St. Clement's. 

 Owenii. 0. C. Summertown. 



porrectus. Phil. O. C. St. Clement's. 

 sulcatus. Mill. 0. C. Summertown, Wolvercot. 

 tornatilis. Phil. O. C. St. Clement's. 

 Nautilus hexagonus. Sow. C.G. Marcham. 



In this list extensive changes of the general forms of ammonites 

 and belemnites appear in the natural order of successive groups 

 of life. Belemnites, which appear to be rare in the Bath oolites 

 of this district, are here renewed in races of a different general 

 aspect. Many of the ammonites belong to earlier groups though 

 specifically different; but one in particular, the group called 

 ' Ornati/ including A. Duncani, appears and prevails in the Oxford 

 clays, without entering the oolitic shelly beds above, or reappearing 

 in the Kimmeridgian clays. One part of this beautiful group is 

 absent, or very rare the species called Calloviensis probably be- 

 cause the Kelloway stone is not here; and for the same reason 

 probably we do not record A. sublaevis. But both may perhaps 

 be found hereafter though rarely. 



FISHES. 



Asteracanthus ornatissimus. Ag. C. O. Heddington. 

 Gyrodus. O. C. St. Clement's. 

 Hybodus grossiconus. Ag. O. C. St. Clement's. 

 obtusus. Ag. C. O. 

 polyprion. Ag. 0. C. St. Clement's. 

 Ischyodus Egertoni. Ag. O. C. St. Clement's. 

 Lepidotus macrocheirus ? Egert. 0. C. St. Clement's. 

 Pycnodus Bucklandi. C.O. Wheatley. 



X 



