Kill 
BULLETIN UF TfIK NATURAL HISTOKV SOCIETY. 
Distribution of Acrotiiele in the 
j Name of Species 
} AND RkFEHENCE. 
Upper Etcheminian. 
Faunal Sub- zones. 
1 
a ' b 
r 
I" 
^ / 
Acrothele abavia. n. sp 
A. avia, mut. puteis, n. in. . , . 
A avia* 
X 
'■'■1 
X 
.... 
X 
X 
1 ^ 
X 
X 
X 
A. proles, n. sp 
;A. decipiens, Walcott ] 
1 J. c 
A Mfiftbpwi, mnt. pn"m;i+.. 
i 
A. mnt. lataf. . 
A. Gamagei. Hobbs 
A. intermedia, Linnarsson*^. . . 
1 
A. o'ranulata, Linnars''On-r^ . 
. . . . 1 
.A. c. f. coriacea, sp. ined 
A. Bohemica, Barrande 
A. Matthewi, Hartt*,^ 
A. coriacea, Linnarssonfl .... 
A. siibsidua, Whitc^T - • ■ 
1 
1 L C 
A. incobans, Barrandctt . 
1 
1 
1 
* Bull. Nat. Hist. 8oc. N. Bruns’k, vol. iv, p. 202, pi. iii, figs, la to A, 1890. 
I 'Frans. Roy. Soc. Can., vol. iii. sec. iv, d. .39, j)l. v, figs, IH, 16a, 17, 17a, 
188.5. 
7 BaUeont. Canib. Terranes, Boston Basin. A. W. Grabau, p. 61.5, pi. 31," 
figs, la to d, 1900. 
r- Brachiopoda of Paradoxides Beds of Sweden, p. 24, pi. iv, fig. 51, 1876. 
,1 Proc. r. S. Nat. Mus. No. xix, p. 716, Id. 60, fig, 2, 1897. 
