JEchin. 63 
ECHINOJDEA. (iV, C.) 
(0.) — ECHINOIDEA. 
Defined (p. 474), classified (p. 481), with Stammbaum (p. 489), and 
the following system (p. 488); Haeckel (116) : 
Families 
Procidarida 
Cystocidarida 
Melonitida 
Pholocidarida 
Bothriocidarida 
' Lepidocentrida 
■ Archooocidarida 
Plcsiocidarida 
j Eocidarida 
{ Cidarida 
' Echinothurida 
Salenida 
Glypticida 
■< Cyphosomida 
Arbacida 
Echinometrida 
k Typechinida 
f Galeritida 
| Conoclypeida 
: Fibularida 
Clypeastrida 
Laganida 
Scutellida 
Echinonida 
Cassidulida 
Collyritida 
Eolampada 
' Ananchytida 
Pourtalesida 
■ Leskiada 
Spatangida 
k Brissida 
Tabular synopsis of Neozoic genera; Koken (171) p. 256. 
General account, with special reference to fossils; Zittel (356) p. 174; 
Zittel-Eastman (357) p. 210. 
Paleozoic Ech, are thus classified by Jackson (139) p. 238: Sub-class I, 
Palceecliinoidea. Order 1, Bothriocidaroida ; 2, Perischoechinoida. 
Families, Melonitidce , Lepidcsthidce , Archceocidaridce y Lepidocentridce ; 
.3, Cystoddaroida ; 4, Piesiocidaroida. Family, Tiarechinidce. Sub- 
class II, Euechinoidea , a few spp. of Cidaris. 
■ \Acrosalenia , vide sub Gauthieria. 
A. meslei , Kimeridgian, Ksar-Dagra near Tatouine, S. Tunis, one specimen 
shows pathological reduction of pores; Gauthier (98) pp. 14, 16, 
pi. xxxii, n. sp. 
+ Actinophyma, syn. of Rachiosoma ; Lambert (179) p. 498. 
fActinopsis (errore Actinopis ), nom. nov. pro Aster opsis Cotteau non 
Miillor & Troschel, genotype A. lapparenti , and comprising Cypho - 
soma arnaudi , subgenus Heteractis, q. v. ; Lambert (179) p. 500. 
A. ( Heteractis ) lieteroporus , Eocene, La Vornede, near Conques, Monze, La 
Valette, between Pradelles and Monze (Aude); Lambert (179) Bull. 
Soc. geol. France, ser. 3, xxv, p. 507, pi. xviii, n. sp. 
Aeropidce , fam. nov. with 4 tribes: Stenoniens, Stenonia , Menuthiaster ; 
Ovulasteriens, Physaster , Ovulaster , Ornithaster , Coraster ; Neopneu- 
Sub-class 
Cystechinida 
II 
Palechinida 
Legions 
Autechinida 
(= Euechinoidea) 
Demosticha 
(= Cidaronia 
v. Regularia) 
Anthosticha 
(= Clypeastronia 
v. Subregularia) 
Orders 
Promelonaria 
Eumelonaria 
Stenopalmaria 
Eurypalmaria 
Cidaridaria 
Diademaria 
Conoclyparia 
Scutellaria 
Petalosticha 
(= Spatangonia . 
v. Atelostoma, 
v. Irregularia) 
Cassidularia 
Spatangaria 
