HOLOTHURTOTPEA. 



203 



any of the specimens, so that it is highly probable that this species dot's not possess 

 Cuvierian organs. 



In all the specimens the sjiicnles are similar in density and form. 



Although the tentacles are retracted in most of the specimens, there appear to be 

 20 tentacular ampullae in each specimen. 



In every specimen the left respiratory tree is much larger than the right, the 

 former extending to the extreme anterior end of the body. 



Appended is a table showing some of the variations noticed in the seven specimens 

 examined : 



Holothuria gallensis, n. sp. Plate III., figs. 46-50. 



Three specimens from the lagoon inside the Reef, Galle.* 



Lengths, 230 millims., 150 millims., and 70 millims. 



The tentacles are not present in any of the specimens ; but there are 20 tentacular 

 ampullae, so that although the tentacles themselves are absent, we may safely conclude 

 that the animal had 20 tentacles. 



The body is divided into a distinct dorsal and ventral surface. The dorsal surface 

 is black and is crossed by numerous conspicuous transverse yellow streaks (Plate III., 

 fig. 4G). The pattern, however, varies somewhat in different specimens, the yellow 

 streaks in the smallest not being very evident. On the ventral surface the colour is 

 light yellow, mottled all over with small dark grey patches. 



Amtmlacral appendages : On the dorsal surface there are small papilla?, which are 

 very thinly scattered and inconspicuous. The appendages on the ventral surface are 

 much more numerous, and are easily distinguished because each one is generally 

 situated in the centre of a dark grey patch. These appendages, which are mostly 

 retracted, are evidently true pedicels. They have only a small terminal plate, and 

 they are strengthened by spicules similar to those found in the general integument. 



* This species was, evidently, from Professor Hehdman's notes, also found in China Pay, Trincomalee. 



2 D 2 



