CUSHMAN: PALEONTOLOGICAL TYPES. 
263 
(reverse); Geol. mag., vol. 4, 1867, p. 387, pi. 17, 
fig. 2 (reverse); Anniv. mem. Boston soc. nat. hist., 
1880, p. 7, pi. 1, fig. 9 (obverse); Foss. ins. No. Am., 
1890, pp. 159, 277, 287, pi. 7, fig. 9 (obverse). 
) 
8498 Xenoneura antiquorum Scndder. Holotype. 
Devonian. “Fern Ledges,” Lancaster, New Brunswick. 
Scudder, Can. nat., ser. 2, vol. 3, 1867, p. 206, fig. 5; 
Geol. mag., vol. 4, 1867, p. 387, pi. 17, fig. 5; Anniv. 
mem. Boston soc. nat. hist., 1880, p. 24, pi. 1, figs. 
5, 7; Foss. ins. No. Am., 1890, pp. 176, 280, 302, 
pi. 7,.figs. 5, 7. 
Pteropoda. 
11966 Hyolithellus micans Billings. Plesiotype. 
Lower Cambrian. Nahant, Massachusetts. 
Grabau, Occasional papers Boston soc. nat. hist., vol. 4, 
1900, p. 658, pi. 32, fig. 12. 
11974 Hyolithes (?) haywardensis Grabau. Holotype. 
Middle Cambrian. Hayward Creek, Braintree, Massa¬ 
chusetts. 
Grabau, Occasional papers Boston soc. nat. hist., vol. 4, 
1900, p. 653, pi. 32, fig. 11. 
11967 Hyolithes searsi Grabau. Cotype. 
Lower Cambrian. Nahant, Massachusetts. 
Grabau, Occasional papers Boston soc. nat. hist., vol. 4, 
1900, p. 649, pi. 32, fig. 5b. 
11963 Orthotheca cylindrica Grabau. Cotype. 
Lower Cambrian. Sandy Cove, Cohasset, Massachusetts. 
Grabau, Occasional papers Boston soc. nat. hist., vol. 4, 
1900, p. 654, pi. 32, fig. 8a. 
13337 Orthotheca cylindrica Grabau. Cotype. 
Lower Cambrian. Pleasant Beach, Cohasset, Massa¬ 
chusetts. 
Grabau, Occasional papers Boston soc. nat. hist., vol. 4, 
1900, p. 654, pi. 32, fig. 8d. 
