ASTEROIDEA. (IV, D.) 
Echin. 93 
Lcptoptycliaster arcticus , neanic ; Michailovskij (223) p. 486. 
Lmckia ekrenbergi, L. marmorata ; Bell (11) p. 245. 
Lophaster furcifer ; Marenzeller (214) p. 564 : measurements ; 
Michailovskij (223) pp. 482, 527. L. stella?is, incl. L. pentactis vel 
levinseni Perr., descr. ; Ludwig (204) p. 27, pi. iii. 
Luidia ciliaris ; Nichols (236) p. 248.: Simpson (294) p. 40. L. sarsi ; 
Johansen & Levinsen (158) p. 284 : Nichols (236) p. 248 : Petersen 
(259) : Simpson (294) p. 40 : larvae ; MacBride (209). L. savignii ; 
Bell (11) p. 244. 
t Metopaster cornutus ; Howe (276) pp. 38, 49. 
Mimaster cognatus, half-grown example, descr., referred to Astropectinidae , 
close to Luidia ; Ludwig (204) p. 6, pi. ii. 
Mithrodia clavigera ; Bell (11) p. 246. 
Nardoa variolata ; Bell (11) p. 245. 
Neomorphaster talismani ; Richard (271) pp. 66, 68, 69 : incl. N. eustichus ; 
Nichols (236) p. 251. 
Nymphaster subspinosus , incl. N. protentus ; Nichols (236) p. 249. 
Odontaster cremeus n. sp., 71° 18' S., 88° 02' W., 450 m. ; Ludwig (204) 
p. 21. 
Ophidiaster fuscus , 3 rows of plates on arms, not 8 ; Bell (11) p. 245. 
O. ophidianus ; Viguier (313). 
Palmipes placenta ; Nichols (236) p. 250: Simpson (294) p. 40. 
Paragonaster subtilis; Richard (271) p. 66. 
Pedicellaster , key to spp. (p. 38), P. antarcticus n. sp., circa 70°-71° S., 
82°-87° W., 450 m. (p. 35) ; Ludwig (204\ P. sexradiatus ; Richard 
(271) pp. 67, 68, 69. P. typicus ; Norman (239) p. 408: notes; 
Michailovskij (223) pp. 478, 526. 
Pentaceros : — \P. sp. ; Gagel (97) p. 543, and text-fig. P. hiulcm ; Bell 
(11) p. 245. C. lincki ; Herdman (143) p. 107, and fig.: incl. “ P. 
muricatus Linck” of Ludwig; Bell (11) p. 244. 
Pentagonaster gosselini; Richard (271) p. 66. P. granularis ; Norman 
(239) p. 408: incl. P. balteatus et concinnus Slad. ; Nichols (236) 
p. 248: variations from type; Mortensen (227) p. 81. P. greeni ; 
Nichols (236) p. 249. 
Phataria fascialis, regeneration; Monks (225). 
Plutonaster bifrons\ Nichols (236) p. 247 : ?; Richard (271) p. 66. P, 
granulosu$ \ ; op. cit. p. 68. P. parelii var. longibrachialis ; Norman 
(239) p. 407. 
Pontaster tenuispinus\ Nichols (236) p. 247: Mortensen (227) p. 82: 
notes; Michailovskij (223) pp. 488, 530. 
Porania antarctica , half-grown example descr. ; Ludwig (204) p. 22, pi. ii. 
P. joulvillus; Nichols (236) p. 249: Simpson (294) p. 40. 
Poraniomorpha borealis ; Howe (150). P. rosea ; Norman (239) p. 408: 
Petersen (259). 
Psilaster andromeda\ Nichols (236) p. 248: Norman ^239) p. 408. 
Pteraster lebruni , descr. ; Ludwig (204) p. 29, pi. iii. P. militaris ; 
Michailovskij (223) pp. 481, 527: Norman (239) p. 408: Simpson 
(294) p. 40: secondary mouth-spines homologous with sphaeridia; 
Mortensen (227) p. 77, pi. ii. P. multipes ; Petersen (259). P. 
obscurus ; Mortensen (227) p. 77: measurements; Michailovskij 
(223) pp. 481, 527 : Arctic not boreal ; Ostergren (244) p. 28 (v. et. 
sub Hexaster). P. personatus\ Nichols (236) p. 251. P. pulvillus ; 
Michailovskij (223) p. 527 : Norman (239) p. 408. 
Retaster cribrosus; Bell (11) p. 246. 
Rkegaster tumidus , relations to var. tuberculata ; Michailovskij (223) 
pp. 485, 529 : variations, causing suppression of var. tuberculata ; 
Mortensen (227) p. 74. 
\Siluraster n. g. with genotype S. perfect'd* n. sp., Upper Ordovician D 4 
of Zahorzan, Bohemia; Jaekel (154) p. 106, figg. 2, 3. 
