echinoidea. (iv, c.) Echin. 79 
1860, mutatum Ncetlingia ; Lambert in Rev. crit. Pal. ii, pp. 125-127, 
1898]. 
t Prototiara, n. g. with genotype Pleurodiadema jutieri Cotteau ; Lambert 
( 179) Bull. Soc. geol. France, ser. 3, xxv, p. 495, footnote, 
t Psammechinus \ — P. charlesworthi ; Bell (33) p. 8. — P. dubius ; Loriol 
( 194) p. 117 : redescr. from Portugal, should perhaps include P. 
gauthieri and P. serresi; Loriol (193) p. 6, pi. i. — P. henslowi ; Bell 
( 33) p. 8. — P. monilis ; DepIsret (64) p. 522 : with n. var. depressa , 
Pliocene of Lugagnano near Parma; Vinassa de Regny (335) p. 148 
& fig. ; said not to bo this species by Lambert in Review. — P. monilisl ; 
Mazzetti (225) p. 418. — P. cf. monilis; Lomnicri (192) p. 34. — P. 
parvus; Alessandri (1) p. 81. — P. theveneti; Kilian (157) p. 768. — 
P. sphceroideus ; Bell (33) p. 8. 
P. zumofeni, Cenomanian, Valley of Nahr el Kelb, Bykfaya (above the 
village); Loriol (195) Rev. Suisse Zool. v, p. 153, pi. vi, n. sp. 
P. n. sp. ; Gregorio (105) pp. 144 & pi. xxvii. — P. n. sp., Pliocene, Castel- 
larquato; Yinassa de Regny (335) p. 149. 
\ P seudananclvis , compared with Lampadaster ; Lambert (178) p. 317. 
f Pseudarbacia, n. g. with genotype P. archiaci (olim Leiosoma) Cott., 
Cretaceous; Lambert (179) Bull. Soc. geol. France, ser. 3, xxv, p. 515. 
t Pscudocidaris crenularis; Kilian (157) p. 685. 
f Pseudodiademu: — P. brongniarti; Kilian (158) p. 894. — P. dubium; 
Almera (3) pp. 567 & 568. — P. lenticulatum; Parona & Bonarelli 
( 259) p. 82. — P. libanoticum Loriol, 1887 ; that of Cotteau 1893 changed 
to P. sanine?isis, nom. nov.; Loriol (195) p. 148. 
P. jessoni, Oxford clay, St Ives, Hunts., England; Gregory (107) Ann. 
Nat. Hist. (6) xviii, p. 465, n. sp. 
t Psilosoma, syn. of Thylechinus; Lambert (179) p. 497. 
t Pygaster umbrella'. Hug (133) p. 404. 
t Pygaulus: — P. cylindricus & P. depressus (p. 761), P. desmoulinsi (p. 
768); Kilian (157). — P. ovatus; Almera (3) p. 567. 
t Pygopistes Pomel, “pas indispensable”; Lambert (180) p. 162, footnote, 
t Py g or hy ncus\ — P. colombi; Mazzetti (225) p. 437. — P. grignonensis 
made type of n.g. Plagiopygus ; Lambert (180) p. 162, footnote. 
\Pygurus\ — P. lampas; Leonhard (187) p. 29: supposed to be from 
Upper Greensand but proves to be Cenomanian; Jukes-Browne & 
Hill (150) p. 145. — P. montmollini (p. 722), P. roslratus (pp. 721 & 
722) ; Kilian (157). 
P. meslei , Kimeridgian ?, Ksar-Dagra near Tatouine, S. Tunis ; Gauthier 
( 98), p. 7, pi. xxxii, n. sp. 
f Pyrina : — P. alaxensis , nil. varr. pentagonal^ tumida , et globosa , Mrostrich- 
tian, Mari Hills, Baluchistan; Noetling (248) Pal. Ind. (16) i, pt. 3, 
p. 19, pis. iii & iv. — P. houzeaui , redescr., apex figd, also a senescent 
individual; Lambert (180) p. 156. — P. ovulum; Gregorio (105) p. 
m. 
P. gigantea, Msestrichtian, Mari Hills, Baluchistan; Noetling (248) Pal. 
Ind. (16) i, pt. 3, p. 21, pi. iv. — P. lamberti , Ghazir (above the 
village), and P. zumoffeni , Ghazir (below the village), Cenomanian, 
Lebanon : Loriol (195) Rev. Suisse Zool. v, p. 159, pi. vii : n. spp. 
iRachiosoma, inch Miocyphosoma & Actinopliyma , place in system ; Lam- 
bert (179) p. 498: vide sub Gauthieria. — R. paucitubercidatum , 
Kilian & Zurcher (160),p. 964. — R.peroni , apex figd; Lambert ( 179) 
p. 510. 
R. grossouvrei , Danian, “Poudingue de la Malogne,” Ciply; Lambert (180) 
Bull. Soc. Beige Geol., ser. 2, xi, p. 154, pi. iii, n. sp. 
Regidares, order defined, includes suborders ffolostomata, Glyphostomata ; 
Zittel (356) p. 185 : Polian vesicles and others ; Ludwig (201). 
t Rhabdocidaris :—R. caprimontana ; Kilian (157) pp. 680, 685 & 686; 
