216 eASIEROFOSA. 



Genus ACUS, S. Loven, 1847. 

 Ofv. K. Vet.-Aka(i. Forh. (for 1846;, 1847, p. 148. 



Aclis acicula, Edwards (MS.). 



Horizon and Localitj/. 



Upper Eocene. — Barton Beds. High Cliff. 



Aclis cincta, Edwards (MS.). 



Horizon and Locality. 



Upper Eocene. — Barton Beds. Barton. 



Aclis conveKa, Edwards (MS.). 



Horizon and Locality. 

 Upper Eocene. — Barton Beds. Barton. 



Family C^CID^, Gray. 



Genus CiECUM, J. Fleming, 1817. 

 Edinburgh Encyclopaedia, 1817, vol. vii. p. 67 (fide S. V. Wood). 



Cbcoiu Morrisi, Edwards (MS.). 



Horizon and Locality. 



Oligocene. — Headon Beds. Ilordwell. 



Genus STREBLOCERAS, P. P. Carpenter, 1858. 

 Proc. Zool. Soc. 1868, p. 440. 



Strebloceras cornuoides, P. P. Carpenter, 18.58. 

 Strebloceras cormtoides. 

 Proc. Zool. Soc. 1858, p. 441 (described, not figured). (F. E. Edwards Coll.) 



Horizons and Localities. 



Oligocene. — Hempstead Beds. Hempstead. 

 Upper Eocene. — Barton Beds. Barton. 



Strebloceras solutum, P. P. Carpenter, 1858. 

 Strebloceras solutum. 

 Proc. Zool. Soc. 1858, p. 441 (described, not figured). (F. E. Edwards Coll.) 



Horizon and Locality. 



Oligocene. — Headon Beds. Hordwell. 



