258 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
11976 Scolithus, cf. S. linearis Hall. Plesiotype. 
Upper Cambrian or Lower Ordovician occurring as a peb¬ 
ble in Carboniferous conglomerate. Newport, Rhode 
Island. 
Grabau, Occasional papers Boston soc. nat. hist., vol. 4, 
1900, p. 614. 
Brachiopoda. 
20 Lingula antiqua Rogers (not Hall). Plesiotype. 
Upper Cambrian or Lower Ordovician. Newport, Rhode 
Island. 
Rogers, Proc. Boston soc. nat. hist., vol. 7, 1861, p. 389. 
= Lingulella rogersi Walcott. 
Lingulella rogersi Walcott. Plesiotype. 
Upper Cambrian or Lower Ordovician. Newport, Rhode 
Island. 
Grabau, Occasional papers Boston soc. nat. hist., vol. 4, 
1900, p. 625. 
Lingulella rogersi Walcott. Plesiotype. 
Upper Cambrian or Lower Ordovician. Fall River, Mass¬ 
achusetts. 
Grabau, Occasional papers Boston soc. nat. hist., vol. 4, 
1900, p. 624, pi. 31, fig. 4. 
11970 Obolella crassa? Hall. Plesiotype. 
Lower Cambrian. East Point, Nahant, Massachusetts. 
Grabau, Occasional papers Boston soc. nat. hist., vol. 4, 
1900, p. 619, pi. 31, fig. 3. 
Crustacea. 
11975 Agraulos quadrangularis (Whitfield). Plesiotypes. 
11976 Middle Cambrian. Hayward Creek, Braintree, Massa- 
23 chusetts. 
Grabau, Occasional papers Boston soc. nat. hist., vol. 4, 
1900, pp. 674, 677, pi. 34, fig. 10. 
20 
2750 
