DISTRIBUTION. 
Ech. 51 
by Hall from this locality, and Batocrinus bisbrachiatus , n. sp. (p. 13); 
Whitfield (271) : Actinocrinus arrosus (p. 15), A. plagosus (p. 16), 
Eretmocrinus cassedayanus (p. 17), Strotocrinus venustus (p. 26), Illinois, 
Actinocrinus erraticus (p. 14), Granatocrinus ivinslowi (p. 66), n. spp. ; 
Miller & Gurley (188): Teleiocrinus cegilops (p. 20), Missouri, Batocrinus 
oblatus (p. 12); Whitfield (271): Batocrinus altiusculus (p. 20), B. 
aspratilis (p. 21), B. scyphus (p. 23), B. Icelus (p. 24), B. cequabilis (p. 25), 
n. spp. * Miller & Gurley (188): n. spp. of. Actinocrinus, Dory crinus, 
Batocrinus ; Miller (187) : B. shepardi , n. sp.; Rowley (228). 
(Kinderhook Group) Missouri, Blairocrinus spinosulus , n. sp., p. 28 ; 
Miller & Gurley (188). 
(Chouteau Limestone) Missouri, n. spp. of Platycrinus , Actinocrinus , 
Blairocrinus , Agaricocrinus ; Miller (187). — Platycrinus allophylus , P. 
insolens , Blairocrinus , Granatocrinus roemeri , and G. sp. ; Rowley (227). 
— G. niutabilis , n. sp.; Rowley (228). 
(f) Devonian : — (Hamilton Group) Missouri, Melocrinus gregeri , 
Taxocrinus concavus, n. spp.; Rowley (228). 
(Upper Helderberg Group) Kentucky, Nucleocrinus greenei (p. 62), 
Kentucky and Ohio, N. venustus (p. 63), n. spp.; Miller & Gurley (188). 
(Lower Oriskany) New York, Edriocrinus sacculus ; Beecher & 
Clarke (14). 
(Lower Devonian, Hauptquarzit) Klostergrunde in Harz, Ctenocrinus ; 
Kayser (131) p. 67. Haupt-Kahlebergrandstein, Harz, Aspidosoma ; 
Halfar (111 a). 
(g) Silurian; — Gotland, the Crinoidea Inadunata compared with tboso 
of England and America ; Bather (11), passim and esp. pp. 6 & 15. — 
Stratigraphy of Central Bohemia with special reference to Crinoids and 
Cystids, of which many nomina nuda are quoted ; Jahn (127). 
(Niagara Group) Indiana, n. spp. of Holocystis , AEthocystis , Stribalo- 
cystis, Stephanocrinus , Saccocrinus , Cylicocrinus , Melocrinus , Gazacrinus i 
Cyphocrinus ; Miller (187). — Tennessee, Eucalyplocrinus wortheni , 
n. sp. : Miller & Gurley (188) p. 53. 
IY. — SYSTEMATIC.! 
(A.)— ECHINODERMA in General. 
General classification ; Agassiz (2) p. 8 : the following is given by 
Perrier (213) pp. 846-864 : — 
I. Sub-series Palccoechinodermata : i Class, Cystidea ; ii Class, Blastoidea. 
II. Sub- series Neoechinodermata : 1. Branch, Anangia ; I Class, 
Stelleroida (= Asteroidea ) ; II Class, Ophiuro'ida ; 2. Branch, 
Angiophora ; I Class, Cnnoida ; II Class, Echinoida ; ill Class, 
Holothurides. 
+ A dagger prefixed to the trivial name of a species indicates that it is fossil ; 
prefixed to the name of the author, it denotes that the reference is to the species in 
a fossil state ; prefixed to the name of a genus, it indicates that all species of the 
genus lioro rocordod nro fossil, and the t is thcroforo not ropoated beforo oach 
namo. Tho abbreviations l c. and op. cit. rofer only to tlio place or work quoted 
immediately before. 
