ECHINOIDEA. (IV, C.) 
Echin. 77 
p. 749 : sec also under n, c, vii & II, F, viii. >S. purpuratus ; Doeder- 
lein (79) p. 382 : see also under n, f, viii. 
\Tetragramma variolare ; Favre (91) p. 99. 
+ Thagastea , link betw. Fibularia and Fibulina ; Tornquibt (316) p. 328. 
t Thylechinus atacicus ; Doncieux (81) p. 102. 
t Tiaromma, diagnosis (p. 230), T. rotulare (p. 231) ; Savin (286). 
\Toxaster, diagnosis; Savin (286) p. 122: T. africanus ; Brives (42) 
pp. 85, 87. T. amplus ; Lambert (170) p. 846. T. broncoensis ; 
Ohoffat (51) p. 29. T. collegnii (incl. T. brunneri ) ; Pannekoek 
(237) p. 5. T. complanatus (=T. returns ); Sayn (286a). T. cf. 
complanatus ; Toula (317) p. 341. T. gibbus ; Savin (286) p. 123. 
T. granosus et cf. granosus , compared with T. ricordeaui (p. 845), T. 
lorioli Lambert not to be separated from T. ricordeaui (p. 844, foot- 
note) ; Lambert (170). T. radula Gauth., refd. to Ilypsaster; 
Lambert in Savin (286) p. 129. T. retusus ; Lambert (170) p. 846 : 
Savin (286) p. 123 : T. ribamarensis n. sp., Urgonian, Barremian, 
Ribamar, in Ericeira, Portugal ; Loriol (195) p. 138, pi. x : and in 
Choffat (51) p. 27. T. ricordeanus seu ricordeaui ; Peron (248) 
p. 365 : Sayn (287) p. 622 : Hitzel (140) : cannot be this sp., does 
author mean Hemiaster Hcordeaui ? ; Lambert in Review : variations 
resembling Miotoxaster collegnoi ; Lambert (170) p. 843. T. cf. ricor- 
deani [sic] ; Savin (286) p. 122. T. subcylindricus ; op. cit. p. 124. 
Toxopneustes lividus ; Loisel (194) : vide etiam sub Paracentrotus et 
Strongylocentrotus. 
\Trachyaster heberti ; Cisneros (54) p. 529. 
t Trachypatagus meneghinii ; Schubert (293) p. 168. 
\Trematopygus , diagnosis ; Savin (286) p. 156. T. davidsoni ; Davey (66) 
p. 34. T. grasanus d’Orb., made Clitopygus grasi ; Savin (286) 
p. 158. T. lorioli n. sp., Upper Aptian, La Fa, Is&re ; Lambert & 
Savin (286) p. 157, pi. i. 
+ Triplacidia vidali n. sp., Eocene, La Antigua Ciudad de Jespus, 
Catalonia ; Loriol (195) p. 122, pi. viii. 
Tripylus , vide sub Linthia. 
\Trochotiara , diagnosis (p. 234), T. depressum ( p. 235) * Savin (286). 
Tromikosoma lcoehleri ; Doederlein (79) p. 377. 
\Tylocidaris, diagnosis ; Savin (286) p. 239. T. sorigneti\ 1. c. : Hitzel 
( 14 °). 
t Typocidaris, diagnosis, and T. malum , incl. radioles known as Cidaris 
heteracantha (p. 272), T. marginata (p. 275) ; Savin (286). T. vesi- 
culosa ; Hitzel (140). 
Urechinus drygalskii n. sp., near Antarctic Continent, 3423 m. (p. 241, 
no fig. ), U. naresianus , S. of Iceland (p. 243) ; Mortensen (220). 
t Zeuglopleurus pusillus ; Wegner (333) pp. 126, 149. 
(D.)— ASTEROIDEA. 
Acanthaster echinites ; Ludwig (197) p. 215. 
Albatrossia n. g. of Porcellanasteridce fnom. preocc. Jordan & Evermann, 
1898, pro Piscibus] with genotype A. semimarginalis n. sp., Cocos Id., 
1408 -2149 m. ; Ludwig (197) p. 97, pi. vi. 
Alexandraster n. g. of Echinasteridae , with genotype A. mints n. sp., 
G. of Panama, Galapagos, 702-837 m. ; Ludwig (197) p. 210, pis. xv, 
xxxi, xxxii. 
Archaster typicus , young ; Ludwig (197) p. 53, pi. xxi. 
\Arthraster dixoni ; Spencer (305) pi. xviii. 
i Aster acanthion lincki , determined by A. E. Verrill ; Sears (297) 
pp. 369, 370, fig. 202 : vide etiam sub Asterias. 
