78 Echin. 
XIV. ECHINODERMA. 
365. — P. affinis ; Mazzetti (225) p. 429. — P. cf. ajjinis ; Vinassa de 
Regny (335) p. 155. — P. callosus (p. 428), P. dilatatus and P. ed- 
wardsi (p. 429); Mazzetti (225). — P. edwarsii (errore pro edwardsi) 
with var. nov. minor , Helvetian of Cassinelle, Piedmont; Botto- 
Micca (41) p. 365. — P. latus ; Alessandri (1) p. 70; Mazzetti (225) 
p. 428; Botto-Micca (41) p. 364. — P. malatmus ; Mazzetti (225) 
p. 429. — P. peroni and P. spatangoides\ Botto-Micca (41) p. 363. — 
P. (an Micraster ?) sp. ; Mazzetti (225) p. 429. 
P. pedemontanus } Helvetian, “pietra da Cantoni,” Cellamonte, Basso 
Monferrato, Italy; Alessandri (1) Mem. Mus. Milano, vi (1), p. 70, 
pi. i, n. sp. 
f P&'ischoechinoida, place of the Order in the system; Jackson (139) p. 
239: Jackson’s classification criticised, another phylogeny given; 
Tornquist (327) p. 730: defined, includes families Lepidocentridce , 
Helonitidce, Archceocidaridoe, and Tiarechinida ; Zittel (356) p. 183; 
Zittel-Eastman (357) p. 219. 
\Perischoechinidce , interrelations discussed, with special reference to Archceo- 
cidaris ; Tornquist (326) p. 55. 
fPerischodomus biserialis and P. illinoisensis , discussed; Jackson (139) 
p. 225. 
Peronella sp., young; Pfeffer (267) p. 46. 
t Pholidocidaris, systematic position discussed; Tornquist (327) p. 767. — 
P. irregularis , discussed; Jackson (139) p. 212. 
P. gaudryi , [n. sp. ?] Carboniferous Limest., L’Ardoisikre, Central France, 
previously referred to by Julien as Lepidocentrus munsterianus (1874) 
and Melonites gaudryi (1890); Julien (151) p. 131, pi. xvi. — P. meehi , 
Keokuk group, Warsaw, 111., arrangement of plates fully described; 
Jackson (139) p. 210, pi. ix. — P. tenuis , Lower Carboniferous, Huns- 
riickenwald, Elsass; Tornquist (327) Abh. geol. Karte Elsass, v, 
p. 767, pis. xxi & xxii : n. spp. 
Phormosoma luculentum\ Koehler (163) p. 473, and (164) p. 93. — P. 
placenta ; Koehler (163) p. 472, and (164) p. 91. 
Phyllacanthus annulifera and P. verticillata ; Pfeffer (267) p. 45. 
t Phymechinus, redefined, place in system; Lambert (179) p. 516. 
\Phymosoma i syn. of Cyphosoma ; Lambert (179) p. 499. 
t Plagiopygus, n. g. for socalled Pygorhyncki of Tertiary, genotype P. 
grignonensis (olim Nucleolites ) Defr. ; Lambert (180) Bull. Soc. Beige 
Geol., sor. 2, xi, p. 162, footnote. 
Plesiocidaroida , rediagnosed, affinities discussed; Gregory (110) p. 1003. 
t PlesiopeltiSy n. g. with genotype Leiosoma gourdoni Cott. ; Lambert 
( 179) p. 517. 
t Pleurodiadema } place in system ; Lambert (179) p. 495. — P. stutzi , large 
specimen from Oxfordian of Tunis described ; Gauthier (98) p. 22. 
t Pliocyphosoma, syn. of Cyphosoma ; Lambert (179) p. 499. 
t Plistophyma, should be subgenus of Leiosoma ( = Trochalosoma ) ; Lam- 
bert (179) p. 515. 
Porocidaris elegans , small specimen with genital plates imperforate ; 
Koehler (163) p. 472, & (164) p. 89. — + P. pseudoserrata , referred to 
Rhabdocidaris mespilum ; Lambert (179) p. 484. — f P. schmideli ; 
Gregorio (105) p. Ill, pi. xxiv: — f P. serraria ; Alessandri (1) 
p. 82 : and P. cf. serraria ; Vinassa de Regny (335) p. 144. 
t Proholaster, n. g., allied to Collyrites , with genotype P. auberti , Ber- 
riasian, Khanget Fioufi in Djebel Meloussi, Tunis; Gauthier (98) 
p. 17, pi. xxxii, n. sp. 
\ Proraster Lambert, not accepted ; Schlueter (296) p. 968. 
t ProteckinuSy n. g., with genotype P. paucituberculatus , Moestriclitian, 
Mari Hills, Baluchistan ; Noetling (248) Pal. Ind. (16) i, pi. 3, 
pp. 14 & 16, pis. ii & iii: n. sp. [gen. preocc. Protoechinus Austin 
