414 Canon A. M. Norman—Wotes on the 
Genus Synaprta, Eschscholtz. 
Synapta Buski, M‘Tntosh. 
1864. Synapta tenera, Norman, Brit. Assoc. Rep. for 1863, p. 106. 
1866. Synapta Buski, M‘Intosh, Proc. Roy. Soc. Edinb. p. 611, wood- 
cut 6. 
1871. Synapta tenera, Brady & Robertson, Proc. Zool. Soc. p. 690, 
pl. Lxxi. figs. 1-3. 
1892. Synapta Buski, ¥. Jeffrey Bell, Cat. Brit. Echin. Brit. Mus. 
p. 34, pl. i. fig. 3 (wrongly numbered in letterpress and on plate, 
eel ‘ 
1898. Labidoplax Buski, Ostergren, “Das System den Synaptiden,” 
Citvers. K. Vet.-Akad. Foérhand. p. 115. 
Ostergren, in his paper on “The MHolothuroidea of 
Northern Norway” (Bergens Museum Aarbog (1892) 1893, 
p- 12), tells us that “The specimens of Synapta inherens 
which Danielssen and Koren (1882) mention from the Por- 
sanger Fiord, long. 70° 54’ N., have proved on my examina- 
tion to be Labidoplax Buski,’ and also the specimens which 
Danielssen (1861) recorded under the same name from 
Vadso. 
Genus Curropotas, Eschscholtz. 
Chirodota levis, Fabricius. (Pl. XX VII. fig. 4.) 
1780. Holothuria levis, Fabricius, Fauna Groenlandica, p. 353. 
1806. Holothuria pellucida, Vahl, in Miller, Zool. Dan. iv. p. 17, 
pl. cxxxy. fig. 1. 
1857. Chirodota leve, Liitken, Oversigt over Groénlands Echinodermata, 
p. 16, figs. 2-4, 
1861. Chirodota pellucida, M. Sars, Oversigt af Norges Echinodermer, 
. 124, pls. xiv.-xvi. 
1867. Chirodota typica, Selenka, ‘ Beit. z. Anat. und System. der Holo- 
thurien,” Zeits. f. wiss. Zool. vol. xvii. p. 866, pl. xx. figs. 126, 127. 
1867. Chirodota tigellam, id. ibid. p. 366. 
1881. Chirodota levis, Duncan & Sladen, Memoir on the Echinoder- 
mata of the Arctic Sea to the West of Greenland, p. 12, pl. i. 
fies, 14-19. 
Dredged in the Varanger Fiord in 125-150 fathoms ; and 
also in Lang Fiord, within the narrows, in 5-30 fathoms. 
Its range extends from N.E. America and Labrador coast, 
Greenland, and Spitsbergen, to the Murman coast and Kara 
Sea. 
The illustrations in M. Sars’s work of this species are 
extremely good ; nevertheless, if the wheel-deposits as figured 
by him be compared with the figure given by Duncan and 
Sladen, I think it will be conceded that, if corresponding 
wheels were found in a fossil state, or had such apparently 
