40 Echin. 
V. Echinoderma. 
[1912] 
■ \Palaeechinua pp. 207, 304, fP- Ve- 
gans p. 308 pi. xxix figs. 3, 4 & 6, pi 
xxx fig. 11, pi. xxxi figs. 1-5, text figs., 
fP. elliptieua p. 307 pi. xxix fig. 2, pi. 
xxx figs. 8-10, fP. quadriaerialia p. 305 
pi. xxix figs. 1 pi. xxx figs. 1-7, text fig., 
Jackson T.c. 
fP?. minor sp. n., Lower Carboni- 
ferous, Burlington, Iowa, p. 310 pi. xxix 
figs. 7 & 8, pi. xxxi fig. 6, pi. xxxii fig. 7, 
fP?. regnyi nom. n. for P. konineki 
Julien, p. 451, text fig., Jackson T.c. 
t Palaeodiacidae diagnosed, pp. 205, 
250, Jackson T.c. 
f Palaeodi8cu8 p. 250, fP. ferox 
p. 250 pi. xviii figs. 1-5, Jackson T.c. 
Palaeotropus joaephinae, Jaokson T.c. 
^Paleanthua, section of Clypeaater , 
type C. breunigi Laube, Lambert Abb. 
Scfiy/eiz. Pal. Ges. 38 p. 89. 
t Paledyinus ? sp. Tornquist, Jackson 
Phylogeuy of Echini p. 452. 
Paraeentrotus, P. agulhenaia, P. 
ahnardi, P. lividua, Clark, H. L. Mem. 
Jus. Comp. Zool. 34 p. 347. 
Parapneustes gen. n. t near Tripylaster 
p. 164, P. eordatua p. 165 pi. xvi 
figs. 15-27, P. reductua p. 171 pi. xvi 
figs. 7-14 spp. n., Antarctic, Koehler 
Charcot exped. ; Zool. Anz. Leipzig 39 
p. 162 ; C. R. Acad. Sci. 155 p. 323. 
Paraaalenia p. 368, P. gratioaa p. 369, 
P. pohlii p. 369 pi., Clark, H. L. Mem. 
Mus. Corap. Zool. 34 . — P. gratiosa , 
Jackson Phylogeny of Echini. 
Parechinus p, 272, P. anguloaus, 
P annulatu8, P. huttoni p. 274, P. magel- 
lanicua p. 275, Clark, H.L. Mein. Mas. 
Comp. Zool. 34 . — P. miliaria Theel 
Stockholm Vet.-Ak. Handl. 49 No. 4 
p. 1. 
■\Pedina rotata, Jackson Phylogeny 
of Echini. 
Pedinidae , Clark, H. L. Mem. Mus. 
Comp. Zool. 34 p. 213. 
f Pelanechinus corallinua , Jackson 
Phylogeny of Echini. 
iPeltastea atellidata, urighti, Jackson 
T.c. 
■ \Perico8mu8 latus, Di Stefani Boll. 
Soc. geol. ital. 27 p. 481.— P. montevia- 
len8ia , Kranz N. Jahrb. Min. Beil Bd. 
32 p. 721. 
IfPerischocidaria pp. 208, 407, 1'P. 
harteiana p. 408 pi. lxv figs. 1 & 2, 
pi. lxvii figs. 1-3, Jackson Phylogeny of 
Echini. 
t Perischodomus pp. 207, 401, |P. 
biaeriolia p. 401 pi. xxix fig. 5, pi. lxii 
figs. 6 & 7, pi. lsiv figs. 2-8, illinoi- 
aensia p. 406 text fig. fP.? magnua 
p. 453, Jaokson T.c. 
Periachoetfunoida, diagnosed, pp. 205. 
253, Jackson T.c. 
Peronella peronii, Jackson T.c. 
| Pholidechinua gen. n. of Lepido- 
centridae , pp. 206, 299, type f P. brauni 
sp. n. Keokuk group, Indiana p. 299 
pi. xxvii figs. 1-6, pi. xxviii figs. 1-10, 
pi. xxxii fig. 6, text fig., Jaokson T.c. 
f Pholidocidaria pp. 206, 299, fP. 
acuaria p. 441 pi. Ixxiv fig. 11, f/\ 
gaudryi p. 442, fP- irregularis p. 434 
pi. lxxiii figs. 3-7, pi. Ixxiv figs. 1-7, 
pi. lxxv figs. 1-5, |P- sp- P* 440 pi. Ixxiv 
figs. 8-10, |P- tenuis pi. lxxii fig. 11, 
pi. Ixxiv figs. 12 & 13, Jackson T.c. 
Phormosoma uranus, Brian Result. 
Campagnes Monaco 38 p. 42. — P. 
placenta, zeylandiae , Jaokson Phylogeny 
of Echini. 
Phyllacanthus annulifera, baculosa, 
imperiodia , thomaaii, Jackson T.c. 
f Phymechinua mirabilia , Jackson T.c. 
■ \Phymoaoma delamarei, Jaokson T.c. 
Phymo8omatidae, Clark, II. L., Mem. 
Mus. Comp. Zool. 34 p. 225. — Jackson 
Phylogeny of Echini p. 203. 
Pileinae, subfain. of Pygasleridae , 
containing Pileus and Anorthopygus, 
Hawkins Proc. Zool. Soc. p. 449. 
f Pileus, diagnosed, P. pileus is type ; 
Hawkins T.c. p. 449. 
■ \Plagiopygua carentonenaia, Lambert 
Bordeaux Actes soc. linn. 66 p. 79. 
IfPlatypleura section of Clypeaater, 
type C. rnurginatua Lamarck, Lambert 
Abh. Schweiz. Pal. Ges. 38 p. 90. 
Plesianthua section of Clypeaater , 
type C. placunariua Gray, Lambert T.c. 
p. 89. 
f“ Plesieehinus ” Pomel, syn. of 
Pygaater but temporarily retained as 
subgenus, fP. macrosloma p. 10, pi. ii 
fig. 1, |P. aemi8ulcatus p. 10, Hawkins 
Geol. Mag. 9, — rejected, as syn. of 
