CHRONOLOGICAL 



25 



Plate. Vol. 



d. — Amoeboceras cf. cricki /ovale, 

 c. — circumpiicaius. 

 b. — Rasenia. 

 a. — bay lei. 



Pictonia costigera, nov 



densicostata, Salfeld-Pringle-Kitchin . . 



716 

 533 



VI 

 V 



Date of 

 issue. 



iv, 27. 

 xii, 2.j. 



36. 



Prionodoceratan . 



d. — superstes. 

 Prionodoceras superstes, Phillips sp. 1871 



422 



c. — prionodes [serratum], 



Prionodoceras excentricum, nov. 



ogivale, nov. 



prionodes, nov. G.-t 155 



truculentum, nov. 



b. — dichotomnm. 

 Dichotomoceras dichotomum, nov. G.-t 



strumatum, nov 



a . — -Dich ot om oceras. 



IV 



viii, 23. 



35. RlNGSTEADIAN. 



b. — brandesi. 



Ringsteadia frequens, Salfeld 1917 589 



sphenoidea, nov 672 



a. — pseudocordata. 



Ringsteadia anglica, Salfeld 1917 225 



pseudocordata, Blake & Hudleston 



sp. 1877 560a, b. 



34. Perisphinctean. 



e. — cawtonense. 

 Cawtoniceras cawtonense, Blake & Hudleston sp. 1877. 



G.-t 454 



d. — ingens. 

 Dichotomosphinctes ingens, Young & Bird sp. 1822 184 



c. — pickeringius. 

 Toxosphinctes pickeringius, Young & Bird sp. 1822. 



G.-t 448 



b. — >antecedens. 

 Dichotomosphinctes antecedens, Salfeld sp. 1914. 



G.-t 



holtonensis, nov. 

 Liosphinctes apolipon, nov. G.-t 



a. — wiartelli. 

 Arisphinctes ariprepes, nov. G.-t 511a 



maximus, Young & Bird sp. 1828 

 Cymatosphinctes cymatophorus, nov. G.-t. 

 Martelliceras orientale, Siemiradzki sp. 1899 

 Perisphinctes biplex, J. Sowerby sp. 1821 



cowleyensis, nov 



tumulosus, nov 



V 

 III 



xn, 23. 



xi, 20. 



xn, 23. 



