92 Echin. 
XIV. ECHINODERMA. 
p. 104. — P. bifrons ; Koehler (163) p. 450, and (164) p. 56 : diagnosis; 
Ludwig (209) p. 290 : diagnosis, external description, measurements of 
old and young, colour, geogr. and bathymetric distrib. ; Ludwig 
( 210) p. 118. — P. granulosus , Azores, redescribed (p. 49, pi. iv); 
P. inermis (p. 49); P. notatus } Azores (p. 49); Perrier (263). — P. 
subinermis ; diagnosis; Ludwig (209) p. 288: treated similarly to 
P. bifrons , also food, description of brephic stage, anatomical notes, 
systematic position discussed ; Ludwig (210) p. 105, pis. i, vi. 
Plutonasterince , rediagnosed ; Perrier (263) p. 47. 
Podasterias , with genotype P. lutkeni ; Perrier (263) p. 35. 
Polyasteriasy genotype P. tenuispina (Lam.); Perrier (263) p. 34: vide 
etiam sub Asterias. 
Pontaster , rediagnosed, and P. limbatus , Newfoundland ; Perrier (263) 
p. 47. — P. maHonis ; Koehler (163) p. 450: probably var. of P. 
tenuispinus ; Koehler (164) p. 53. — P. venustus ; Koehler (163) 
p. 450: some variations from the type; Koehler (164) p. 55: 
Azores ; Perrier (263) p. 47. 
Porania , rediagnosed; Perrier (263) p. 42. — P. antarctica ; loc. cit. and 
pi. iii, fig. 4; Meissner (229) p. 99. — P. pulvillus\ Koehler (163) 
p. 446, and (164) p. 47 : Bay of Biscay ; Perrier (263) p. 43. 
Prognaster , rediagnosed and discussed ; Perrier (263) p. 22. — P. grimaldii, 
Azores, redescribed ; op. cit. p. 23, pi. ii. 
Psilaster , rediagnosed; Perrier (263) p. 51. — P. andromeda, Azores; loc. 
cit . : redescribed; Koehler (164) p. 52: variation in spines, gradation 
between paxillse and granules; Koehler (163) p. 449. 
Pteraster personatus i variation from type; Koehler (163) p. 447: re- 
descriDed, differences from type ; Koehler (164) p. 49. 
Pterasterid<je } rediagnosed ; Perrier (263) p. 40. 
Pycnopodia , accepted as genus, with genotype P. helianthoides (Stimps.); 
Perrier (263) pp. 32, 34. 
Quadraster , n. g. with genotype Q. (olim Stichaster ) felipes Sladen ; Perrier 
( 263) p. 27. 
Retaster cribrosus , includes R. insignis Sladen, specimens from Thursday 
Island and Dar-es-Salaam described; Doederlein (69) p. 319. 
Sclerasteriasy rediagnosed; Perrier (263) pp. 34 & 35. — S. guernei , Bay of 
Biscay, redescribed ; op. cit. p. 35, pi. i : specimens larger than Perrier’s 
type ; Koehler (163) p. 441 : redescribed ; Koehler (164) p. 41. 
Smilasterias, accepted as genus, with genotype S. scalp tr if era ; Perrier 
( 263) pp. 32, 34. 
Solaster papposus, 10- and 12-rayed, measurements; Yanhoeffen (333) 
p. 238. 
Solasteridce, rediagnosed ; Perrier (263) p. 39. 
Spinulosa , rediagnosed ; Perrier (263) p. 38. 
Sporasterias , with genotype S. rugispina (Stimps.); Perrier (263) p. 34: 
vide etiam sub Asterias. 
Stellaster incei , measurements of nine specimens, includes S. belcheri ; 
Doederlein (69) p. 307. 
Stellonia webbiana d’Orb Asterias glacialis ; Ludwig (210) p. 364. 
t Stenaster (inch Urasterella\ S. grandis, S. harrisi ; James (146) pp. 135, 136. 
Stichaster , defined and emended; Perrier (263) pp. 26, 31. — S. albulus ; 
Vanhoeffen (333) p. 237.— S. aurantiacus ; Meissner (229) p. 101. — 
S. littoralis Farq. is syn. of S. suteri Loriol, colour-difference due to 
alcohol, variation in shape of rays (p. 197); S. polyplax, includes 
Tarsaster neozelanicus Farq. (p. 196); Farquhar (83). — S. roseus ; 
Koehler (163) p. 443, and (164) p. 44 : B. of Biscay ; Perrier (263) p. 31. 
Stichaster idce } rediagnosed, and its genera discussed ; Perrier (263) p. 25. 
Stolasterias , emend, as genus; Perrier (263) pp. 32, 34, 36: vide etiam 
sub Asterias. — S. glacialis ; Koehler (163) p. 441, and (164) p. 41. — 
