Ecli. 55 
ASTEROIDEA. IV, D. 
t P. chantrei , Yirgulien, Cirin (Ain) ; Loriol (88) Arch. Mus. Lyon, vi, 
p. 6. P. planus , 156 fraa.,39° 53' N., and P. simplex , 640 fms., Martha’s 
Vineyard ; Verrill (164) Amer. J. Sci. xlix, p. 135 : n. spp. 
Petalastrum , n. subg. Astrogonii , M. T., cum typo A. propegeometricum f 
Post-pliocene, Sicily; Gregorio (48) Ann. Geol. Pal. Livr. xvii, 
n. sp. 
Pharia pyramidata , found at Valparaiso, a specimen with 6 rays ; Lei- 
poldt (84) p. 633. 
Plutonaster agassizii, includes P. rigidus and var. semiarmata , Sladen, 
distribution ; Verrill (164) p. 131. fP. lithographicus , Thiolli6re, 
olim Astropecten , from Cirin, described and figured ; Loriol (88) 
p. 5. P. ( Tethyaster) parelii ; Grieg (49) p. 5 ; Sluiter (150) p. 51. 
Pontaster forcipatus, distribution; Verrill (164) p. 130. P. hebitus , 
includes Archaster tenuispinus , Verrill, not D. & K., distribution ; l. c. 
P. pilosus ; Alcock (1). P. sepitus, distribution ; Verrill (164) 
p. 131. P. tenuispinus ; Grieg (49) p. 5 ; Sluiter (150) p. 51. 
Porania antarctica ; Leipoldt (84) p. 588. P. grandis , see Chondr aster 
and P. insignis, distribution ; Verrill (164) p. 137. P. pulvillus ; 
Grieg (49) p. 6 ; Sluiter (150) p. 59 : with one dichotomous ray, 
figured ; Herdman (55) p. 71. 
P. insignis , 65-373 fms., from 41° 28' 30" N., to 36° 38' 30" N., based 
on P. grandis pars, young described ; Verrill (164) Amer. J. Sci. 
xlix, p. 138, n. sp. 
Poraniomorpha borealis , distribution, and a large specimen described ; 
Verrill (164) p. 139. P. rosea ; Sluiter (150) p. 59. P. spinu - 
losa , with varr. rudis and inermis , and a large exceptional specimen, 
distribution ; Verrill (164) p. 139. 
Poraniopsis echinasteroides , redescribed and figured, placed in Poraniidce ; 
Leipoldt (84) p. 589. 
Porcellanaster cceruleus, distribution ; Verrill (164) p. 133. 
P scudarchaster concinnus, distribution (p. 132), P. intermedius , includes 
Archaster parelii , Verrill, non D. & K., distribution (p. 131), P. inter- 
medins, n. var. insignis, 100-1356 fms., Nova Scotia to 40° 09' 30" N. 
(p. 132) ; Verrill (164) Amer. J. Sci. xlix. P. tessellatus , n. var. 
arcticus, Barent’s Sea, 150 fms.; Sluiter (150) Bijdr. Dierk. xvii, 
p. 51. 
Psilaster andromeda ; Grieg (49) p. 6. P. florae , distribution ; Verrill 
( 164) p. 133. 
Pteraster militarise, Sluiter (150) p. 63: distribution; Verrill (164) 
p. 202 : not purely Arctic, a 7-rayed specimen; Grieg (49) p. 7. 
P. pulvillus ; Grieg (49) p. 8 ; Sluiter (150) p. 63 : distribution ; 
Verrill (164) p. 201. 
Pycnopodia heliantho'kles ; Leipoldt (84) p. 577/ 
Retaster , see Diplopter aster. 
Rhegaster tumidus , var. tubercnlata ; Sluiter (150) p. 59. 
R. abyssicola, 2045 fms., off Delaware Bay, 37° N., 71° 54' W. ; Verrill 
( 164) Amer. J. Sci. xlix, p. 140, n. sp. 
