ACTINOPODOUS HOLOTHUEIOIDEA. 117 



radius). Outside this again, brown spots at bases of papilla) 

 may be more or less in a une, marking the outer boundary of the 

 clear space ; but this seems never so regular as the Hne first 

 referred to. All the tubercles, excepting those referred to above, 

 are of tlie light ground color, and, as they are devoid of brown 

 spots, look like whitish patches on the general brown surface of 

 the dorsum. When fully expanded, it is seen that the tip of the 

 cone as well as the base of the surmounting papilla is colored dark 

 brown, xlll tlie papillae have their rather bluntly ending tip 

 tinged slightly yellow. 



The cloaca is surrounded by a circle of small papillœ, and 

 the mouth by an oral membrane fringed with papillœ. 



Tables among calcareous deposits sometimes with regular 

 (Makenzeller Fig. 12, A) and sometimes with irregular or 

 incomplete base (I.e., Fig. 12, B). Spire with one cross-beam. 

 Crown with 13 — 20 teeth. Ventral tables plumper than dorsal. 

 Buttons mostly with three pairs of holes, but sometimes with 

 4 — 7 pairs. They are often irregular, being deficient in parts or 

 having more holes on one side than on the other. 



The species hves under ledges of rock. Tliey are found in 

 all depths from the shore to 25—125 fathoms. It is not cured 

 to any extent into trepangs, nor is it eaten. 



Localit !/ .-—Qnenmha. (Semper 'GO); Zanzibar (Selexka '67); Baui 

 (Lampert '96) ; Insel Bneni (L.urrERT '96) ; Kokotoni, Zanziliar (Ludwig 

 '99) ; Mamitius (Haacke 'SO, Ludwig '83, Théel '86) ; Malié, Seychelles 

 (Ludwig '99) ; Ceylon (Ludwig '87) ; Tuticoriu (Bell '88) ; Bay of Bengal 

 (Bell '88) ; Andaman Is. (Beij. '87) ; Gulf of Manaar (Thurston '90) ; 

 Nicobar Is. (Semper '67—8); Pnlo Tikul (Semper '67—8); Pulo Edam 

 (Ludwig '88); Noordwacliter Eiland (Ludwig '88) ; Batavia (Sluiter '87, 

 '95); Simda Is. (Koehler '95); Lumu-Lumu, Borneo Bank (Sluiier : 01) ; 



