FOSSIL SIPHONODENTALIID^. 235 



S. NEGLECTUM (Cossmann), 1888. 



Pulsellum neglectum COSSM., Ann. Soc. Koy. Malac. Belg., xxiii, 

 p. 11, pi. l,f-2, 3. 



Parisian Eocene, Le Guepelle, Marines, Chaussy. 



Genus CADULUS Philippi. 



This genus first appears in the middle Cretaceous. The early 

 forms are typical examples of the group Gadila, showing no feat- 

 ures unlike the recent species of that section. The species aregault- 

 ianus Gardner, obrutus Conr. and gabbi Pils. & Sh. 



In the Eocene there are numerous forms ; and species of Dischides 

 and Polyschides also make their advent ; and in the Oligocene the 

 number of species is further augmented, all of the modern types 

 except the short, obese forms being represented, the latter appear- 

 ing in the Miocene. Nearly all of the known Pliocene species are 

 also recent, and hence are to be found in the text of this work 

 rather than in the following list. 



CADULUS ABRUPTUS Meyer & Aldrich, Journ. Cincinnati Soc. N. 

 H.,ix,1887,p.40,pl.2,f.2. 



Oligocene, Neivton and Wautubbee, Mississippi. 



Considered by Dall and Aldrich a probable synonym of (Z 

 subcoarcuatus Gabb. 



C. ANNULATUS Pilsbry, 1898. Proc. Acad. Nat. Sci. Phila. 



Oligocene, Bowden, Jamaica* 



C. BELLULUS Clark, 1895. Johns Hopkins Univ. Circular, xv, 

 p. 5; Bull. U. S. Geol. Survey, No. 141, p. 72, pi. 14, f. 6. 



Eocene, Woodstock beds, Matthias' Point, King George Co., Vir- 

 ginia. 



C. (DlSCHIDES) BILABIATUS (Desh.). 



Dentalium bifissuratum DESK., Traite Elem. de Conchyl., Atlas* 

 pi. 61, f. 11, 12, 14 (1864). 



Gadus bilabiatus DH., Descr. An. s. V. Bassin Paris, ii, p. 219, 

 pi. 3, f. 22-24. Siphonodentalium bilabiatum COSSMANN, 1888. 



Eocene, Paris Basin. 



C. (DISCHIDES) BOURYI (Cossmann), 1888. 



Siphonodentalium bouryi COSSMANN, Ann. Soc. Roy. Malac. 

 Belg., Vol. xxiii, p. 13, pi. 1, figs. 6, 7. 



Parisian Eocene, Parnes, Montainville. 



