72 Ecliin. 
XIV. ECHINODERMA. 
(Ill) p. 349. P. antiqua (Hisinger), see Lindstromaster. P. bonneyi, 
n. sp., Ludlow shales, Leintwardine, Shropshire; Gregory (111) 
p. 349, pi. xvi and text-figg. P. kinahani Baily, see Uranaster. P. 
stellata Billings, see Schuchertia. 
kPalaeasterinae, diagnosed as sub-fam. of Palaeasteridae ; Gregory (111) 
p. 344. 
t Palaeasterinidae, diagnosed as fam. of Phanerozonia ; Gregory' (111) 
p. 348. 
t Palaeasteroidea , rejected; Gregory (111) p. 342. 
Palaeocomci Salter, vide Sturtzaster. 
kPalaeo Stella, maintained, with genotype P. solida , and referred to Aspido- 
somatidae; Gregory (111) p. 351. 
Palmipes membranaceus, breeding period, habitat; Lo Bianco (147) p. 473. 
P. placentai, distribution, habitat ; Allen (8) p. 464. 
Paragonaster cylindratus; P. elongatus ; P. strictus ; P. subtilis compared 
with P. formosus : Verrill (243) p. 196. 
Pararchaster armatus , et P. semisquamatus var. occidentalis, vide Bentho- 
pecten spinosus. 
Paxillosa, discussed and restr. to include Porcellanasteridae, Archasteridae, 
Astropectinidae, Luidiidae ; Verrill (243) p. 198. 
Peltaster , n. g., with genotype P. hebes, n. sp., 294 fins. ‘Albatross’ 
station 2668, W. Indies (p. 168, pi. xxviii) ; P. planus, redescribed 
(p. 170, pi. xxviii): Verrill (243). 
Pentaceropsis obtusata ; Bell (32) p. 136. 
Pentaceros lincki and P. nodosus, Id. of Matupi, either varr. of one sp., or 
interbreed and produce hybrids; Bell (32) p. 136. P. muricatus', 
Ludwig (158) p. 540. 
Pentagonaster dates from Gray 1840, with genotype P. pidchellus, and 
inch P. abnormale, P. bourgeti, P. gunni, and P. lubeni , while 
Stephanaster Ayres is syn. ; Verrill (243) pp. 147, 157, 158. P. 
afiinis, vide Pyrenaster. P. arcuatus, vide Mediaster. P. dentatus, 
vide Pyrenaster. P. granularis, vide Tosia. P. intermedins, vide 
Litonotaster. P. investigatoris, vide Eugoniaster. P. japonicus, vide 
Mediaster. P. lepidus, vide Hoplaster. P. patagonicus, vide Mediaster. 
P. planus, vide Peltaster. 
-\Petraster, maintained, in Palaeasterinae, with genotype P. rigidus ; 
Gregory (111) p. 345. 
Phanerozonia, extended to Palseozoic Ast .; Gregory (111) p. 343: restr. 
by excl. Asterinidae and Gymnasteridae [what happens to these is not 
stated]; Verrill (243) p. 200. 
Plinthaster s.-g. of Tosia (q.v.); Verrill (243) p. 161. 
Plutonasteridae, n. fam. with sub-famm. Mimasterinae , Plutonasterinae, 
and Pontasterinae ; Verrill (243) pp. 200, 210. 
Plutonaster agassizii, pedicillarise (p. 211, pi. xxvii) ; P. ejjlorescens, 
description of holotype, which is “ evidently the young of some large 
species” (p. 211): Verrill (243). P. subinermis, breeding period, 
habitat; Lo Bianco (147) p. 473. 
Pontasterforcipatus, evidence for bipolarity; Thompson (230) p. 319. 
Porania pidvillus, distrib., habitat, habits ; Allen (8) p. 463. 
Prionaster, n. g., with genotype P. elegans, n. sp., 142 fms. ‘Albatross’ 
station 2401, G. of Mexico ; Verrill (243) p. 215, pi. xxvii. 
t Protaster sp., Devonian, Belgium; Destinez (71). 
i Protaster a canthion, maintained as genus of Taeniasteridae, with genotype 
P. primus ; Gregory' (111) p. 352. 
Pseudarchaster, redefined (p. 189); P. annectens (p. 195); P. aphrodite 
(p. 195) ; P. concinnus, spines and genital pores discussed (p. 193, 
pi. xxx); P. discus (p. 195); P. fallax, inch Archaster parelii pars 
(p. 190, pi. xxx); P. granuliferus, n. sp., ‘Albatross’ station 2751 
