A, E. Verrili— The Bermuda Islands; Geology. 145 
This is usually nearly or quite black in color, though sometimes 
spotted, and is 10 to 15 inches long and 3 to 4 inches broad. It is, 
therefore, very conspicuous when the white bottom is viewed with a 
water-glass. 
This creature, like all the larger holothurians, has a large con- 
voluted intestine, which is always found crammed full of the bottom 
mud, from which it digests out any nutritive material that it may 
Figure 38.—Holothuria Rathbuni, 1g natural size. Phot. by A. H. Verrill. 
Figure 39.—Synapta roseola, Pink Synapta, about 1s natural size; a, one of the 
dermal anchors much enlarged. 
contain, but the inert residue is passed out in great quantities and 
mostly in a state of fine division. Another large holothurian, but 
much more slender (Holothuria Rathbuni) lives buried in holes 
beneath the surface of the mud, but feeds in the same way. It is 
often 15 inches in length and pale rusty brown in color with darker 
brown blotches.* é 
Several other smaller and more slender burrowing holothurians, 
which commonly occur, belong to the genera Synapta and Chirodota. 
* These Trans., vol. xi, p. 37, pl. i, figs. 6, 7; Verrill, Zodlogy Bermuda, IJ, art. 
Ha ply t, figs: 6,0, 6, 71901. 
