52 Echin. 
XIV. ECHINODERMA. 
[ 1904 ] 
t Arachniopleurus \ Mortensen (195) p. 112. 
Arachnoides diagnosis ; Meissner in Hamann (112) p. 1382 : name 
rejected, should be Echinodiscus ; Fourtau (83) p. 424. A. ‘placenta ; 
de Meijere (57) p. 137, pi. xix : Martens (185). 
Araeosoma descr. ; Del age (54) p. 223, fig. : criticised ; Agassiz (3) 
p. 83. A. owsteni (corr. owstoni) n. sp., Sagami B., 50 fm. ; Mortensen 
( 194) p. 82, pi. ii, v. A. tessellatum , radioles, pedicellariae, spicules ; 
de Meijere (57) p. 35, 250, pi. xiii ; ? juv. — Asthenosoma gracile A. Ag. 
Challenger Stat. 219 ; Mortensen (194) p. 86, pi. iv. 
Arbacia ; Delage (54) p. 237 : versus Echinocidaris , discussed ; Loriol 
( 162) p. 13 : development of coronal plates ; Agassiz (3) p. 54, pis. 
liii, liv : experiments on sperm-ovum ; Lyon (171). A. dufresnii , 
incl. A. schytei & A. alternans, descr., with young ; Loriol (162) p. 8, 
pi. ii. A. nigra ; de Meijere (57) p. 207. A. punctata , pluteus ; 
Weysse (284) p. 100, fig. A. punctulata , descr,, range ; Clark (38) 
p, 563, pi. vii. A. pustulosa ; Di Mauro (63). A. [1 pustulosa Tj ; 
Janssens (136). 
Arbaciinae defined with list of genera ; Delage (54) p. 237. 
Arbacina diagnosis ; Meissner in Hamann (112) p. 1367. L. forbesiana 
referred to Prionechinus (q. v.) ; de Meijere (57) p. 71. 
f Archaeocidaridae defined ; Klem (142) p. 45. 
\Archaeocidaris ; Delage (54) p. 218 : defined, synn. Echinocrinus } Palaeo- 
cidaris ; Klem (142) p. 45. A. sp. ; Beede & Rogers (21) : Hind 
( 123) pp. 186, 188 : ? ; Kittl (141) p. 685, pi. xxii : Etheridge 1892, 
Julien 1896, Meek 1859, & Stacke 1877 ; Klem (142) p. 65. A. 
aculeatus (p. 45), A. agassizi (p. 46), & A, biangulatus (p. 47) descr. ; 
Klem (142). A. cf. biangulata; Richardson (227) p. 37. A. cratis 
(p. 47), A. dininni , & A. edgarensis (p. 48) descr., A. glabrispina 
(p. 62), A. gracilis descr. (p. 49), A. grueneri (p. 62) ; Klem (142). 
A. harteiana vide Perischodomus hartei. A. illinoisensis (p. 49) & A. 
keokuk (p. 50) descr. ; Klem (142). A, keyserlingi , radioles ; Kittl 
( 141) p. 684. A. konincki ; Klem (142) p. 63. A. ladina ; 1. c. : 
radioles; Kittl (141) p. 684. A. legrandensis (p. 50), A. longispinus, 
A. megastylus (p. 51), A. mucronatus (52), A. nerd [sic], incl. Cidaris 
protei (p. 52), A. newberryi (p. 53), A. norwoodi , A. ornatus (p. 54), all 
descr., A. ourayensis , A. priscus (p. 63) ; Klem (142;. A. regimontana 
n. sp., Visean of Konigsberg near Giessen, interambulacrals ; 
Parkinson (206) p. 365, pi. xv. A. rossicus descr. (p. 55), var. 
schellwieni , A. scotica Smith [!, i.e. J. Young], A. (?) selwyni (p. 64), 
A, shumardanus descr. (p. 56), A. spinoclavatus descr. (p. 57), A. 
tennesseae } A. tirolensis (p. 64), A. trautscholdi (p. 65), A. triplex descr. 
(p. 57), A. triserialis & A. triserratus descr. (p. 58), A. trudifer descr. 
(p. 59); Klem (142). A. urei\ Fraipont (85) p. 11, pi. i : IIind (123) 
p. 192: Peach (209) p. 848 : descr.; Klem (142) p. 59. A. vetustus 
descr. ; Klem (142) p. 61. A. wervekei\ Fraipont (85) p. 11, pi. i : 
Klem (142) p. 65. A. ivortheni descr. ; Klem (142) p. 61. 
Archaeocidarisinae defined with list of genera ; Delage (54) p. 218. 
Archaeopneustes , genotype A. hystrix is syn. of Paleopneustes , but [A. 
abruptus ] is more allied to Amphipneustes ; Agassiz (3) p. 186. 
Argopatagus , diagnosis; Meissner in Hamann (112) p. 1401: & Geni- 
copatagus compared with Palaeotropus , Homolampas , Phrissocystis, & 
Palaeobrissus (p. 172), A. vitreus (p. 172, 183, pi. xci) ; Agassiz (3). 
Aspidodiadema ; Delage (54) p. 230, fig. A. antillarum , tubercles, 
pedicellariae, referred to Dermatodiadema (q. v.) = Plesiodiadeina (p. 37, 
pi. iii-v), C. jacobyi , spicules, pedicellariae, A. microtuberculatum , 
specimen fr. Challenger Stat. 134 taken as genotype, tubercles, pedi- 
cellariao, referred to Dermatodiadema (q. v.) = Plesiodiadeina (p. 36, 
pi. iii-v); Mortensen (195). A. nicobaricum , descr.; de Meijere 
