148 HOLOTHURIIDAE. 
Chamisso and Eysenhardt, 1821. The fact needs emphasis, as Ludwig’s very 
careful and important revision of Brandt’s species has so generally validated 
Brandt’s names. 
Holothuria atra. 
Jarcer, 1833. De Holothuriis, p. 22. 
This very abundant species is represented in both the collections. It was 
taken at Rangiroa, Paumotu Islands, September 21, 1899 and at Manga Reva, 
Paumotu Islands, February 3, 1905. The latter would seem to be the farthest 
to the southeast that the species is known to range. 
Three specimens. 
Holothuria cinerascens. 
Stichopus (Gymnochirola) cinerascens BRANDT, 1835. Prod. descr. Anim., p. 251. 
Holothuria cinerascens LAMPERT, 1885. Die Seewalzen, p. 82. 
A single specimen of this species, long known under Selenka’s familiar 
name pulchella, was taken on the coral reef at Manga Reva, February 3, 1905. 
The record extends the known range far to the southeast. 
Holothuria difficilis. 
Semper, 1868. Holothurien, p. 92. 
Fifteen small specimens which seems to be this species were taken at 
Makemo, Paumotu Islands, October 20, 1899. The resemblance in the general 
appearance and in the calcareous particles with those of H. captiva, H. frequen- 
tiamensis, and Actinopyga parvula are very striking, and suggest that the four 
names represent a single species. Examination of good series of specimens 
from numerous localities will be necessary to get the matter cleared up. 
Holothuria imitans. 
one 
Lupwia, 1875. Arb. Zool. Zoot. Inst. Wurzburg, 2, p. 109. 
There is a deep brown holothurian, 110 mm. long by 30 mm. in diameter, 
in the 1904-1905 collection labeled “‘114.’’ I am unable to find any interpre- 
tation of this label for on November 4, if the figures are a date, the ALBATROSS 
was dredging in more than 1,700 fms. between Panama and the Galapagos, 
and the specimen is obviously a littoral form. The calcareous particles are 
tables alone, save for supporting rods in the numerous pedicels which cover 
the whole body. The tables are very different from those of languens and while 
they also differ from Ludwig’s figure of the tables of imitans, they are so much 
