PEOSOBBANCHIATA. PTTRPUEID^. 169 



Genus PHOS, Montfort, 1810. 

 Conch. Sy.st. 1810, vol. 2. pp. 494 (woodcut), 495. 



Phos coarctatus, Edwards (MS.). 



Horizon and Locality. 

 Upper Eocene. — Barfmi Beds. Barton. 



Phos defosstut, Pilkington, 1804. 



Bucdnum defossum. 

 Trans. Linn. Soc. 1804, vol. vii. pi. xi. fig. 2, p. 117. 



Mwe.v defosswi. 

 Mineral Conchology, 1823, pi. 411. fig. 1. (Sowerby Coll.) 



Muricopsis defossus. 

 Ann. Soc. R. Mai. Belgique, 1889, vol. xxiv. p. 129. 



Horizon and Localities. 



Upper Eocene. — Barton Beds. Barton ; Hordwell. 



Phos defossns, var. lineatus, Edwards (M8.). 



Horizon and Locality. 

 Upper Eocene. — Barton Beds. Barton. 



Family PURPURID.E, Broderip. 



Genus CUMA (Humphrey, 1797), Swainson, 1840. 



Mas. Calon. 1797, p. 35 (no description or figure) ; 

 Malacology, 1840, pp. 87 (woodcut), 307. 



Cuma monoplex (Deshayes, MS.), Sandberger, 1863. 



Purpura {Cuma) monoplex. 



Conch. Mainzer Tert. 1863, pi. xviii. figs. 10, 10", W', p. 226. 



Ihirjmra monoplex. 

 Desc. Anim. sans Vert. 1865, pi. xciv. figs. 15, 16, p. 519. 



Horizon and Locality. 

 Oligocene. — Hempstead Beds. Hempstead. 



Family CANCELLARIID^, H. & A. Adams. 



Genus CANCELLARIA, Lamarck, 1799. 

 M^m. Soc. Hist. Nat. Paris, 1799, p. 71. 



Cancellaria aspera, Edwards (MS.). 



Horizon and Locality. 



Upper Eocene. — Barton Beds. Bartou. 



