264 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
11959 
11969 
11973 
9499 
9492 
12985 
9510 
Orthotheca cylindrica Grabau. Cotype. 
Lower Cambrian. Nahant, Massachusetts. 
Grabau, Occasional papers Boston soc. nat. hist., vol. 4, 
1900, p. 654, pi. 32, fig. 8c-f. 
Orthotheca emmonsi (Ford). Plesiotype. 
Lower Cambrian. Cohasset, Massachusetts. 
Grabau, Occasional papers Boston soc. nat. hist., vol. 4, 
1900, p. 655, pi. 32, fig. 9a-d. 
Orthotheca (?) foerstei Grabau. Cotype 
Lower Cambrian. Pleasant Beach, Cohasset, Massachu¬ 
setts. 
Grabau, Occasional papers Boston soc. nat. hist., vol. 4, 
1900, p. 657, pi. 32, fig. 10. 
Pelecypoda. 
Area protracta Rogers. Holotype. 
Miocene. Prince George’s County, Virginia. 
Rogers, Trans. Am. phil. soc., ser. 2, vol. 5, 1835, p. 332; 
vol. 6, 1839, pi. 26, fig. 5. 
Cucullaea onochela Rogers. Holotype. 
Eocene. Virginia. 
Rogers, Trans. Am. phil. soc., ser. 2, vol. 6, 1839, p. 372,. 
pi. 28, fig. 2. 
= Cucullaea giga?itea Conrad. 
Cucullaea transversa Rogers. Holotype. 
Eocene. King George’s County, Virginia. 
Rogers, Trans. Am. phil. soc., ser. 2, vol. 6, 1839, p. 373, 
pi. 29, fig. 1. 
Lucina speciosa Rogers. Holotype and paratypes. 
Miocene. James River region, Virginia. 
Rogers, Trans. Am. phil. soc., ser. 2, vol. 5, 1835, p. 333; 
vol. 6, 1839, pi. 26, fig. 6. 
= Codakia speciosa (Rogers). 
