HOLOTHURIOIDEA. (IV, B.) 
Echin. 55 
G. of Cagliari, Sardinia, spicules and the numerous Polian vesicles 
figd., madreporites, lacunae, colour, is associated with H. tubulosa and 
passage-forms between the two are found ; Russo (205) Monit. Zool. 
Ital. x, p. 225. H. heller i, Cuvierian organs ; Russo (203). //. im- 
patiens ; Ludwig (158) p. 558 : inch H. botellus Sel. ; Bedford (28) 
p. 145: measurements, colour in spirit (?), internal anatomy of 4 
specimens compared ; Bedford (29) p. 840: respiratory trees, anatomy 
and physiology ; Bordas (43) : generative organs ; Bordas (44) : 
Cuvierian organs ; Russo (203). H. intestinalis , breeding period ; 
Aurivillius (21) p. 16. H. lentiginosa Marenz. perhaps a var. of 
H. pardalis ; Bedford (28) p. 145. H. lubrica , Zanzibar ; Ludwig 
f 158) p. 560. H. maculata ; Bedford (28) p. 146, & (29) p. 842. 
H. monacaria ; Ludwig (158) p. 557 ; Bedford (28) p. 146 : internal 
anatomy of 3 specimens compared ; Bedford (29) p. 841. H. nigra , 
distribution, habitat, habits; Allen (8) p. 461. H. pardalis \ Ludwig 
( 158) p. 559: probably inch H. subditiva , measurements, colour, 
spicules ; Bedford (29) p. 839 : var. insignis, spicules ; Bedford (28) 
p. 145. H. rugosa ; Bedford (29) p. 839, pi. liii. II. santori , 
Cuvierian organs ; Russo (203). H. surinamensis from Bermuda, 
compared with type, variations in number of tentacles and Polian 
vesicles ; Clark (56) pp. 121, 133. H. thomsoni, evidence for bi¬ 
polarity ; Thompson (230) p. 317. II. tubulosa , breeding period, 
habitat, commensal; Lo Bianco (147) p. 475: generative organs; 
Bordas (44) : respiratory trees, anatomy and physiology ; Bordas 
( 43) : vide etiam sub H. huberti. II. vagabunda ; Ludwig (158) 
p. 558 ; Bedford (29) p. 842 : spicules; Bedford (28) p. 145, pi. xvii. 
H. willeyi , n. sp., Blanche B., New Guinea; Bedford (28) p. 148, 
pi. xvii. 
Irpa abyssicola , v. sub Elpidia. 
Kolga seu Kolge :—redefined, inch K. hyalina , K. affinis, K. challengeri , 
K. furcata, K. insignis , K. naresi , K. obsoleta, K. porcellus , K. robust a, 
K. rosea ; Herouard (121) p. 175. K. furcata , n. sp., dredged by 
‘ Princesse Alice,’ Station 698; Herouard (121) p. 171, text-fig. 2. 
E. nana , evidence for bipolarity ; Thompson (230) p. 318 : vide etiam 
sub Scotoplanes. K. obsoleta , n. sp., dredged by ‘ Princesse Alice,’ 
Station 753 ; Herouard (121) p. 170, text-fig. 1. 
Laetmogone wyville-thomsoni , evidence for bipolarity ; Thompson (230) 
p. 318. 
Leptosynapta Verrill, syn. of Synapta ; Clark (57) p. 22. 
Mesothuria , modification of Ludwig’s diagnosis (jl 244); M. expectans 
[sic], n. sp., depth and locality not stated, no figure (Bull. Mus. Paris, 
1899, p. 245) ; M. intestinalis , diagnosed (p. 244); M. maroccana , 
diagnosed (p. 245); M. verrilli , diagnosed (p. 245): R. Perrier (191). 
Orcula (? Phyllophorus) dubia , n. sp., Lifu, Loyalty Is., no diagnosis, but 
spicules figd. ; Bedford (28) p. 144, pi. xvii. 
Paelopatides grisea, perhaps a var. of P. conf 'undens ; R, Perrier (191) 
p. 248. 
Parelpidia , redefined, inch P. elongata , P. cylindrica ; Herouard (121). 
Peniagone , redefined, inch P. wyvillei , I\ atrox , P. azorica , P. horrifer , 
P. incerta , P. lugubris , P. purpurea , P. vitrea , P. willemoesi] Herouard 
( 121) p. 175. P. ajjinis, P. challengeri , P. naresi , P. porcellus : v. sub 
Kolga. 
Periamna roseu?n, v. sub Kolga. 
Phyllophorus , v. sub Orcula. P. urna, breeding period, habitat; Lo 
Bianco (147) p. 476. 
Pseudocucumis africana; Ludwig (158) p. 561 : inch Cucumaria assimilis 
Bell and P. theeli Luchv. ; Bedford (28) p. 144: variations in 
tentacular symmetry, compared with P. mixta , P. acicula , P. inter- 
