50 Echin . 
V. E chino derma. 
figs. 13 & 14 pi. xxxv fig. 7, |P. sub- 
quadralus p. 237 pi. xxxiv figs. 1 & 2, 
Soiiuoiiert Maryland Geol. Surv. 
■\ Rhipidocystidae, fam. of A mphoridea 
Heterostelea (of doubtful validity), con- 
taining Rhipidocystis only, Bather 
Trans. R. Son. Edinb. 49 p. 368. 
f Rhipidocystis, fl2. gigas (gonotypo) 
p. 309 figs. 1 2 & 4, fP. baltica p. 371 
fig. 3 (probably syn. of R. gigas). 
Bather T.c. 
I Rhomb if era discussed and diagnosed. 
Bather T.c. p. 426. 
\Sphaerocystites globularis p. 247 
pi. xxxiv figs. 13 & 14 pi. xxxv figs. 5 
& 6 pi. xxxvi fig. 1, var. ovalis p. 248 
pi. xxxvi fig. 2, f$. multi fasciatus p. 
245 pi. xxxiv figs. 11 & 12 pi. xxxv 
figs. 1-4, Sohuchert Maryland Geol. 
Surv. 
f Tetracystis chrysalis , Sohuchert 
T.c. p. 232 pi. xxxii figs. 10 & 11. 
\Trimerocystis peculiaris , Sohuchert 
T.c. p. 244 pi. xxxiv figs. 8-10. 
\Trochocyslidae, fam. of A mphoridea 
Heterostelea, Bather Trans. R. Soc. 
Edinb. 49 p. 308. 
f Trochocystis p. 419, f T. [ bohemica 
p. 421 textfigs. 29 & 30, ]T.\ barrandei 
[1913] 
p. 421 textfigs. 31 & 32, Bather 
T.c. 
II. Blastoidea. 
f Revised classification, Springer 
Zittel-Eastman’s Paleontology 1913 p. 
t Blast, from Carboniferous Limo- 
stone of Invertiel, Fifeshire, Wright 
Trans. Geol. Soc. Edinb. 10 pp. 49-60. 
t Pentremites aff. derbyensis p. 352 
pi. iv fig. 12, fP. sp. p. 353 pi. iv figs. 
13 & 13 bis, Carpentier Mem. Soc. 
geol. nord. 7. 
f Pentremitidea cf. gilbertsoni p. 99 
pi. iii figs. 9 & 10, fP. sp., p. 101 pi. iii 
figs. 11 & 12 textfigs. 9-11, Sohuchert 
Maryland Geol. Surv. 
K. Inoertae sedis. 
f Coenocystis Girty, not a Cyst id. 
Bather Proc. Zool. Soc. 1913 p. 897. 
f Cyclocystoidcs discussed, j6\ halli 
p. 25 pi. iii figs. 1 3 & 4, f G. huronensis 
p. 29 pi. iii fig. 2, Raymond Ottawa 
Victoria Mus. Bull. 1 . — \G. illinoisensis. 
Savage Bull. Illinois Geol. Surv. 23 
p. 40 pi. i fig. 2. 
