ECHINOiDEA. (iV, C.) 
Echin. 73 
P. gevreyi n. sp., Hauterivian, St. Pierre-de-Ch&rennes, Isbre, radioles 
only ; Lambert & Savin (286) p. 265, pi. vi. P. gibbcrula (Ag. sub 
Cidaris ), radioles ; Savin (286) p. 314, pi. iv. P. glandifera ; op. cit. 
p. 260 : Kilian (156) pp. 806, 818. P. laeviuscula (p. 258), P. lineo- 
lata , radioles (p. 265, pi. vii), P. locardi (p. 258), P. loryi (p. 262) ; 
Savin (286). P. mattheyi ; Kilian (156) p. 781. P. meridanensis, 
radiole (p. 262, pi. iv), P. propingua (p. 261), P. punctata (p. 266), P. 
spinigera , radioles (p. 266, pi. vii) ; Savin (286). P. spinulosa and 
P. zschokkei ; Kilian (156) p. 743. 
Plesgiocidaris ; Lambert in Review of Kilian (156), Rev. paleozool. x, 
p. 61 : err. typ. pro Plegiocidaris. 
Plesiaster Pomel, vide sub Linthia et Pseudobrissus. 
Plesiolamp[ad]inae , vide sub Echinolampidae. 
+ Plesiolampas, distinctness from Oriolampas questioned ; Lambert (171) 
p. 150. 
iPlesiospatangus , the genotype P. cotteaui redescr. ; Fourtau (97) p. 611, 
pi. i. 
Plexechinus hirsutus n. sp., Denmark Straits, N. Atlantic, 450-1300 fm., 
P. nordenskioldi n. sp., Shag Rocks Bank, Antarctic, 160 m. ; Morten- 
sen (220) p. 242, no figg. 
t Pliolampas: — P. aremoricus (p. 50, pi.), P. camerinensis (p. 51); Airaghi 
(5) pi. P. gourdoni , syn. of Echinanthus arizensis Cott. ; Lambert 
(171). P. silvestrii n. sp., Miocene, C. Dogana, near S. Maria 
Tiberina, Umbria (p. 51), P. vasalli [=vassali] (Wright sub Pygo- 
rhynchus) (p. 49) ; Airaghi (5) pi. P. vilanovae ; Cisneros (54) 
p. 529. 
Podocidaris prionigera and P. scutata, vide Pygmaeocidaris. 
t Poly cidaris, diagnosis (p. 270), P. collenoti, test descr., and P. legayi 
(p. 271) ; Savin (286). 
t Polydiadema, diagnosis (p. 232), P. gran (Desor, sub Diadema) (p. 233); 
Savin (286). P. rhodani ; 1. c. : Hitzel (140). 
Porocidaris (vide etiam sub Cidaris) : — t P. granulosa ; Kilian (156) 
p. 818. P. purpurata ; Schmidt (291) p. 23: distrib.; Doederlein 
(79) p. 376. +/*. schmideli ; Hawelka (131) p. 117 : Schubert (293) 
pp. 165, 168. +/ , . J cf. schmideli ; Schubert (294) p. 280. t P. serrata ; 
Douvill^ (83) p. 50. 
t Porpitella: — P. concava ; Lambert (171) p. 138. P. doncieuxi ii. sp., 
Lower Lutetian, near Saint-Chinian, Hdrault; bp. cit. p. 136, pi. v: 
Doncieux (81) p. Ill : Miquel (215) p. 18. P. Jibularoides dis- 
tinguished from P. hayesictna , probably incl. Scutellina calvimontana 
Cott. (p. 138), P. porpita , a fragment figd. by Tdtirnouer is refd. to 
Stenaster labriei (q. v.) tp. 140); Lambert (171). 
Pourtalesia Jeffrey's i, distrib. ; Doederlein (79) p. 385. P. miranda ; 
Kemt (152) p. 206 : (?) ; Schmidt (291) p. 24. P. paradoxa n. sp., 
S. of Iceland, 843-912 fm. ; Mortensen (220) p. 243, no fig. P. 
phyale ; Kemp (152) p. 206. P. wandeli ii. sp., Davis Str., N. Atlantic, 
845-1715 fm. ; Mortensen (220) p. 242, no fig. 
iPrenaster : — P. alpinus ; Doncieux (81) p. 106. P. desori ; Cisneros 
(54) p. 529. 
Prionechinus distinguished from Arbacina ; Checchia (49). 
Protenaster Pomel, vide sub Linthia. 
t Protocidaris sp. radiole ; Smycka (303) p. 60. 
\Protocyamus Gregory, vide Discoidea. 
Psammechinns (vide etiam sub Echinus), diagnosis (p. 196), tP. sp. (p. 197, 
pi. viii); Savin (286). P. cupreus, holotype in Senckenberg Mus. is 
not syn. of Notechinus magellanicus, but appears to be Parechinns 
microtuberculatus ; Doederlein (78) p. 623. tP. excavatus (Leske sub 
Echinites ) ; Loriol (195) p. 131, pi. ix. P. microtuberculatus ; Kra- 
helska (168). +P. miliaris ; ChoffAt (52). 
