4 BULLETIN OF THE 
the margin of the brim round the body, and are scarcely visible to the naked 
eye. The dorsal papille are minute, few in number, and probably confined to 
the ambulacra alone. The mouth is ventral in position, and the anus dorsal. 
There are twenty (?) tentacles. The color is bluish violet. 
The deposits are scattered, and consist of very regularly formed three-armed 
bodies, with smooth nearly straight arms forming equal angles with one another 
and having the ends slightly enlarged and pierced with one or several holes; a 
long central simple column directed outwardly runs out from the centre of the 
body and terminates in some minute spines. The calcareous ring is evidently 
absent or dissolved. Two Polian vesicles 50 mm. long are present. Each of 
the longitudinal muscular bands is divided into two. The respiratory trees are 
long and more developed. A bundle of long slender genital tubes is situated 
on each side of the dorsal mesentery. 
Habitat. Lat. 39° 43/ N., Lon. 10° 55’ 25” W. (1880); depth 1002 fathoms ; 
two specimens. Lat. 38° 16! 45’ N., Lon. 73° 10’ 30” W. (1880); depth 1186 
fathoms; one specimen. Lat. 39° 38’ 20” N., Lon. 70° 56’ W. (1880); depth 
1241 fathoms; two specimens. 
Stichopus Pourtalesii, n. sp. 
On account of the very defective state of the specimens, it is almost impossi- 
ble to get an exact idea of their true shape. So far as I can observe, they 
resemble in all respects Stichopus natans of Sars, except that the ventral sur- 
face appears to have two kinds of pedicels: small ones, like those of Stichopus 
natans ; and very wide, wart-like ones, which seem to be placed along the 
sides of the body. By means of these warts the animals adhere firmly to 
rocks and stones, so that it seems almost impossible to obtain a perfect exam- 
ple. The deposits resemble those of Stichopus natans, Sars, but possibly the 
spire bears longer, more numerous spines on the four vertical rods. Consider- 
ing the very incomplete state of all the specimens, it is probable that other 
differences also exist between this species and that of Sars, but for the pres- 
ent I cannot find any other than the large remarkable wart-like feet which 
Stichopus Pourtalesit possesses. 
Habitat. St. Kitts (1878-79); depth 208 fathoms; fragments of several 
specimens. Grenada (1878-79); depth 291 fathoms ; fragmentary specimens. 
Guadeloupe (1878-79); depth 734 fathoms; fragments. (Barbados 1878-79); 
depth 209 fathoms ; fragments. Lat. 18° 20’ 30” N., Lon. 87° 16’ 40” W. 
(Bartlett, 1880); depth 600 fathoms ; one specimen. 
Stichopus Johnsoni, n. sp. 
In a contracted state, the animal attains a length of 150 mm. The color 
is yellowish brown. There are twenty tentacles of the same size and shape. 
The ventral pedicels are not crowded, and they do not seem to form any well- 
