CYSTIDEA. (IV, G.) 
Echin. 95 
near Petersburg (p. 221, pi. xi); C. volbortki, rediagnosed (p. 220); 
C. walcotti , n. sp., Trenton limest., Trenton Falls, U. S. (p. 221, 
pi. xi): Jaekel (130). 
Cigara dusli, is based on stem-fragments; Jaekel (130) p. 147. 
Codiacystis , nom. nov. pro Craterina Barr, non Bory, rediagnosed and 
discussed (p. 398); C. sp. ind., Upper Ordovician, Frasno, Spain 
(p. 402); C. bohemica (p. 401, pi. iv): Jaekel (130). 
Comar ocystidce defined; Bather (22) p. 920. 
Corylocrinus , rediagnosed with synn. Juglandocr. Koenen, 1 Hemicosmites 
Forbes and Salter non Bucli, ? Stribalocystis Miller (p. 311); C. crassus 
olim Juglandocr. rediagnosed (p. 312); C. elongatus , n. sp., Upper 
Ordovician of Grand Glanzy near Cabrikres (p. 312, pi. xvii, text-fig.); 
? C. occidentalism n. sp., single plates from Upper Ordovician of 
Bussaco, Portugal (p. 312); C. pyriformis, rediagnosed (p. 312): 
Jaekel (130). 
Crinocystis ? rectus referred with doubt to Rhodocr .; Whitfield & IJovey 
( 254) pp. 94, 99. 
Cryptocrinidce , defined ; Bather (22) p. 920. 
Cyathocystidce , nov. fam. pro Cyathocystis , defined and referred to Class 
Edrioasteroideo ; Bather (22) p- 923. 
Cyathocystis , rediagnosed (p. 42); C. plautince (p. 43, pi. i); C. rhizophora 
(p. 43): Jaekel (130). 
Cyclocystoides , referred with doubt to Agelacrinidce ; Bather (22) p. 923. 
Cystaster , rediagnosed; Jaekel (130) p. 43: vide Agelacrinidce. C. 
gramdatus, restr., part becomes Thecocystis sacculus ; Jaekel (130) 
p. 44, pi. i. 
Cysticlea concomitans not a Stromatocystis as Pompeckj thought, but a 
lobolith; Jaekel (130) p. 147. 
Cystoblastida, n. fam. for Cystoblastus only; Jaekel (130) p. 222. 
Cystoblastus, rediagnosed and described (p. 223); C. kokeni , n. sp., Ordo¬ 
vician, G 2. Brandschiefer, Kuckers, Esthland (p. 230, pi. xvi, text- 
figg.); C. leuchtenbergi , rediagnosed (p. 230, pi. xvi): Jaekel (130). 
Dactylocystidce, n. fam. pro Dactylocystis et Protocrinus [ = Protocrin idee 
Bather], morphology and phylogeny; Jaekel (130) p. 425. 
Dactylocystis , n. g. [syn. of Proteroblastus Jaekel 1895] (p. 434) with 
genotype D. schmidti , n. sp., Middle Ordovician, Hemicosmites beds, 
Uxnorm near Reval, Esthland (p. 436, pi. v). D. mickwitzi, n. sp., 
Middle Ordovician, Wesenberg beds, of Sack near Reval (p. 436, pi. v): 
Jaekel (130). 
Dendrocystidce defined; Bather (22) p. 919. 
Dichoporita ord. nov. [but = Rhombifera] defined, general morphology 
discussed, divided into suborders Regularia and Irregularia ; Jaekel 
( 130) p. 178 et sqq. 
Dinocystis , n. g. with genotype Dinocystis barroisi, n. sp., Condroz, 
Ardennes [but already described by Bather (16a) Zool. Rec. 1898]; 
Jaekel (130) p. 47, pi. ii: not the same as Agelacrinus of Mourlon 
1881; Dewalque (73): etymology, horizon, identity with Agelacrinus 
of Mourlon 1881; Bather (23): vide Edrioasteridce. 
Diploporita , redefined, incl. Sphaeronidae , Glyptosphceridae , Protocrinidae, 
Mesocystidae , Gomphocystidae ; Bather (22) p. 920: redefined, general 
morphology discussed, contains famm. Mesocystidae , Sphaeronidae, 
Aristocystidce,Glyptosphaeridce, Dactylocystidce,Gomphocystidae ; Jaekel 
( 130) p. 346. 
Discocystis, vide Agelacrinidce. D. kaskaskiensis, D. optatus, D. sampsoni, 
discussed ; Jaekel (130) p. 47. 
Echinodiscus Worth, and Mill, non Ag. vide Discocystis. 
Echinoencrininae, sub-fam. of Glyptocystidae ; Bather (22) p. 920. 
Echinoencrinus (- ites ), rediagnosed and described, phylogenetic relations 
