HOLOTHUROIDEA. 
Eclu 8 
0. mollis, Br., = ? Synapta glabra, Semper. 
C. rufescens, Br., = C. variabilis, Semper. 
Aspidochir mertensi, Br., = Chirodota sive Synapta, sp. 
Liosoma sitchaense, Br., = Chirodota discolor, Eschsch. 
Cladodactyla miniata, Br., = Cucumaria fallax, Ludwig. 
Cladodactyla nigricans, Br., = Cucumaria nigricans, Sel. 
Cladodactyla albida, Br., = Cucumaria albida, Ludwig (piec Selenka)., 
Cuvieria sitchaensis, Br., = Psolus fabricii, Liitken. 
Cladolabes limaconotos, Br., = Orcula limaconotus, Ludwig. 
Diplop er id eris sitchaensis, Br., = Stichopus sitchaensis, Ludwig. 
Ilolothuria grandis, Br., = Stichopus ananas, Semper. 
llolothuria dubia, Br., = Muelleria lecanora, Jager. 
II. maculata, Br., = M. nobilis, Sel. 
Sporadipus ualenensis, Br., = Ilolothuria marmorata, Semper. 
Sporadipus maculatus, Br., = II. arenicola. Semper. 
Stichopus leucospilota, Br., = II. vogabunda, Sel. 
Ilolothuria affinis, Br., = II. atra, Jager. 
II. oithiops, Br., = II. pulla, Sel. 
Stichopus cinerascens, Br., = II. pulchclla, Sel. 
Thyonidium i)arvum, sp. n., Ludwig (19) p. 54. 
Synapta benedeni, sp. n. id. 1. c. p. 55. 
Sluiter (29) describes as new, and figures : — 
Ananus holothuroides, g. & sp. nn. 
Oenus javanicus, sp. u. 
Ilaplodactyla hualoeides, sp. n. 
Microdactyla caudata, g. & sp. nn. 
Chirodota variabilis (?) Semper, is figured, and there is a note on the 
wheels of Chirodota. 
Chirodota dunedinensis, sp. 'n., T. J. Parker, Tr. N. Z. Inst. xiii. 
p. 418. 
Molpadia turgida, sp. n., Verrill, Am. J. Sci, (3) xvii. [1879] p. 473. 
Haacke describes as new (Mobius, Beitrage zur Meeresfauna der Insel 
Mauritius, &c., pp. 47 & 48) 
Chirodota eximia. 
Colochirus colloradiatus, propinquus. 
Phyllophorus tenuis. 
Stichopus cylindricus, 
Cystipus pleuripus. 
Labidodemas leucopus, punctulatum, neglectum. 
Ilolothuria lagmna, utrimque-stigmosa, collaris, monosticha, mammicu- 
lata. (Brief diagnoses only.) 
CEINOIDEA. 
Carpenter (11) gives a useful table of the differences between Antedon 
and Actinometra', describes a new genus Atelecrinus (which retains 
several larval characters) for Ant. cubensis and A. halanoides, sp. n. 
