ANNOTATED LIST. 169 
are unlike that species, too, in their habitat, not seeking the shelter of rock cavities and 
crevices as that species does. The type-locality for schmeltzii is Bowen, but Dr. Coppinger 
took it at Warrior Reef in Torres Strait, Théel (1886) records it from the Pelew Islands, 
and the Szboga took it at two and perhaps three stations in the East Indies. The locality 
“Gulf of St. Vincent,” for a specimen in the Museum Godeffroy, seems to me improbable 
and needs confirmation. 
Pseudocucumis aciculus. 
Cucumaria acicula Semper. 1868. Holothurien, p. 54, pl. xv, fig. 11. 
Pseudocucumis acicula Ludwig. 1874. Arb. Zool-zoot. Inst. Wiirzburg, 2, p. 90. 
(Plate 19, Figure 4.) 
This really notable holothurian was fairly common at Mer, and a specimen was also 
taken at Weier, but few were so brilliantly colored as the one figured. Most individuals 
were brown-orange or orange-brown or blackish, the depth of shade apparently depending 
upon the amount of dark-brown pigment in the skin; the tentacles seem to be quite gen- 
erally variegated with whitish. The largest individuals are 80 to 100 mm. long when fully 
extended, but shrink to little more than half that length when contracted. All of the 
individuals seen were found on the under side of rock-fragments on the reef-flats. The 
species was originally described from Fiji, but it is also known from Tonga, Ceram, Amboina, 
the Andaman Islands, and Mauritius. There is a specimen in the Museum of Comparative 
Zodlogy from Port Galera, Mindoro, Philippine Islands. 
Pseudocucumis africanus. 
Cucumaria africana Semper. 1868. Holothurien, p. 53, pl. xv, fig. 16. 
Orcula cucumiformis Semper. 1868. Holothurien, p. 244. 
Pseudocucumis theeli Ludwig. 1887. Sitz. K. Preus. Akad. Wiss. Berlin, 54, p. 1236, pl. xv, figs. 12-16. 
Pseudocucumis africana Ludwig. 1888. Zool. Jahrb., 3, p. 815. 
On the afternoon of the day we landed at Thursday Island, September 10, 1913, a 
stroll along the shore at the west end of the island yielded a few small black holothurians, 
living deep in the crevices and crannies of the rock, whence it was hard to dislodge them 
in an uninjured condition. Later in the month, the same species was met with at Erub 
and at Mer on the under side of rock-fragments. These specimens were dull purplish in 
color with nearly black tentacles. Subsequent investigation has shown that all these little 
sea-cucumbers are Pseudocucumis africanus, a species long known from Mozambique, 
Mauritius, the Seychelles, the Mergui Archipelago, southern Japan, and many stations in 
the East Indies. The general appearance is well brought out in Ohshima’s figure (1912, 
pl. 1, fig. 4). The big, rough, calcareous plates are very characteristic, so that the species 
is easy to identify, even when the tentacles are strongly contracted. Lampert (1896, p. 61) 
has pointed out that the calcareous plates in Orcula cucumiformis Semper, the type locality 
for which is Cape York, are identical with those of Pseudocucumis africanus. In view of 
what we now know regarding the development and arrangement of the tentacles in Pseudo- 
cucumis, I think it is safe to consider cucumiformis a synonym of africanus. 
Pseudocucumis eurystichus ' sp. nov. 
(Plate 37, Figures 9 to 19.) 
Length 27 mm.; diameter 11 mm.; in life, extended, the length was about 50 mm. 
and the diameter 8 or 9. Body somewhat pentagonal in cross-section. Tentacles strongly 
contracted and difficult to make out, apparently 18, 9 or 10 of which are large. Pedicels 
confined to ambulacra but in very broad series; in each dorsal ambulacrum there are 5 
rows and in the ventral there are 6 or 7; pedicels relatively large and crowded. Caleareous 
ring high, but the anterior projections, which are as long on the interradial pieces as on the 
1 eipi¢ = broad + orixos =row or rank, in reference to the very broad series of pedicels. 
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