40 Ech. 
XIY. ECJHINODERMA. 
T. proehirude , Upper Cenomanian, Neuvy-Sautour (Yonne) and St.-Parres 
(Aube) ; Lambert (57) Bull. Soc. Yonne, xliii, pp. 30 & 38, n. sp. 
(D.)-ASTEROIDEA. 
Classification of Asteroidea discussed, following proposed : — Order, 
Forcipulata (Brisingidao, Pcdicellasteridae, Ileliasteridu), Asteridoo, 
Zoroasteridse, Stichasteridae) ; Order, Spinulosa (Eckinasterida), 
Mithrodidae, Solasteridae, Asterinidae, Ganeriidae) ; Order, Yelata 
(Myxasteridaa, Pythonasteridae, Pterasteridae) ; Order, Paxillosa 
(Astropectinidae, Porcellanasteridae, Archasteridee) ; Order, Valvata 
(Linckiidae, Pentagonasteridae, GymnasteridaB, Antheneidae, Penta- 
cerotidae) ; Perrier (92). Classification into Suborders, Families, 
and Genera, with special reference to fossils; Sturtz (115) 
pp. 38-80. 
Acanthar chaster, n. g., type A. duwsoni (olim Archaster ) ; Verrill (125) 
P. U. S. Mus. xvii, p. 268. 
Anthenoides surma , figured ; Alcock (2) 
Aphroditaster , Sladen, rejected ; Perrier (92) p. 341. 
Archaster americanus , Yerrill, referred to Astropecten (p. 255), A. bairdi , 
type of n. g. Isaster (p. 258), A . dawsoni, type of n. g. Acanthar- 
chaster (p. 268) ; Verrill (125). A. echinulatus, Perrier, referrod 
to Cheiraster (p. 278), A. efliorescens , Perrier, referred to Plutonaster 
(p. 322) ; Perrier (92). A. florae, Verrill, referred to Psilaster 
(p. 255), A. formosus, Yerrill, referred to Paragonaster (p.257); 
Verrill (125). A. insignis , Perrier, referred to Dy taster ; Perrier 
( 92) p. 299. A. mirahUi8, Perr., referred to Cheiraster coronatus , C. 
vincenti , C. mirabilis, and Pontaster oligoporus, quos vide ; op. cit. 
A. parelii , Verrill, non D. & K., syn. of Pseudarchaster intermedius ; 
Verrill (125) p.249. A. pulchcr, Perrier, referred to Plutonaster 
(p. 322), A. rigidus , Perrier nom. nud. in FilhoJ, referred to Dytaster 
(p. 304) ; Perrier (92). A. sepitus , referred to Pontaster ; Yerrill 
( 125) p. 247. A. simplex , Perrier, referred to Pararchaster ; Perrier 
( 92) p. 254. A. tenuispimis , Yerrill non auctt., referred to Pontaster 
hebitus and P. forcipatus ; Verrill (125) p. 247. A. typicus , varia- 
tion in spines ; Bell (7) p. 402. 
A. tenuis , Macclesfield Bank, 35 fms. ; Bell (7) P. Zool. Soc. London, 
1894, p. 402, n. sp. 
Archasteridee , discussed, diagnosed, key to subfamilies and genera ; 
Perrier (92) pp. 237-252 ; limits discussed ; Verrill (125) p. 266. 
-\ Archaster ias rhenana, discussed ; Sturtz (115) pp. 42 & 58. 
Aspidosoma , discussed ; Sturtz (115) pp. 38 & 55. 
f Asterias acuminatus, Sim., possibly a Bcemeraster ; Sturtz (115) p. 53. 
A. glacialis ; Meissner & Collin (80) p. 338 ; littoral and deep- 
water varieties ; Koehler (56) p. 407 ; senses of smell and taste ; 
Nagel (86) p. 177; at Cette, distinction between littoral and deep- 
sea types; Koehler (55) pp. 4 & 6. A. yrcenlandica (pp. 105 & 
