1887.] PROF. F. J. BELL ON HOLOTHUROIDS. 533 



anus distinctl)' five-rayed, with several hard papillae along each ray, 

 which look almost like the " teeth " of Actinopyga. The body-wall 

 is pretty thick, and, iu the specimen dissected, was for 30 millim., at 

 a distance of 40 miUini. from the anterior end, particularly thick. 



It is impossible, from the condition of the specimen, to describe 

 fully the internal anatomy, but the tentacular ampullse were seen to 

 be long, the oesophageal ring to be moderately developed, the radial 

 pieces having a deep anterior notch. The Cuvierian organs are 

 small or absent. 



The spicules are numerous, very thick, basket-like spheres with 

 small holes and prominent knobs (Plate XLV. fig. 4). 



Colour black. 



The two specimens measure respectively 240 millim. by 100 millim. 

 and 185 miUira. by 95 millim. 



Hab. Samoa. Collected and presented by Rev. S. J. Whitmee. 



HOLOTHURTA (BoHADSCHIA) INERMIS, Sp. UOV. 



A species distinguished by the absence of spicules and calcareous 

 ring. 



Body elongated, tapering somewhat at either end ; suckers very 

 thick in triviuin, scattered and much rarer in bivium ; three indistinctly 

 marked trivial rows ; about the middle of the trivium the suckers 

 less closely packed than at either end. Anus five-rayed, the sides 

 of the rays with papillae. 



Twenty black tentacles ; pharynx quite devoid of oesophageal 

 ring ; no calcareous deposits. 



Colour dark brown, the suckers and tentacles still darker. 



Hab. West Indies. 



In order to retain the general form of the single complete speci- 

 men, I have not made a complete dissection ; fortunately, however, 

 there is an anterior end of a second specimen, and by it I have been 

 able to assure myself that the absence of the calcareous ring is not 

 an individual peculiarity. 



HoLOTHURiA KAPiOLANi^, sp. nov. (Plate XLV. fig. 5.) 



Body elongated, soft to the touch, covered with suckers, more 

 numerous below than above, scattered quite irregularly ; obscurely 

 marked papillae round the anus. CEsophageal ring of ordinary type, 

 the pieces simple and low, with a rather deep notch posteriorly ; 

 stone-canal not remarkably long ; two Polian vesicles ; genital tubes 

 short and not numerous ; Cuvierian organs absent or poorly deve- 

 loped. The spicules merely in the form of delicate, slightly curved, 

 very spiny rods. 



Colour brownish grey, lighter below ; with two rows of eight or 

 nine dark patches on either side of the back. 



The single specimen is 60 millim. long, and has an average width 

 of 10 millim. 



Sandwich Islands. ?^*ksh \%'^0 . ?, SO -9 



This species appears to be most closely allied to H. erinaceus, from 

 which, however, the much smaller stone-canal and the very dif- 

 ferently formed spicules are sufficient to distinguish it. 



