HOLOTIIURIA. 23 



firmly rivet tod to solid substance*. The skin l*-t wvn the rows is 



luit of quite 11 diflercnt character from that on the nock, the dine, or near 



the tentacnla. That different character <it' the dilli-ivnt [Mirts in ver\ 



conspicuous. 



AlMiut Ion Miekers occupy the length of a row in such a specimen 

 ntiil. Tin- five divisions may IK- called, for distinction. .^/-//. 

 nr/"/f" of suckeiv In -ome sjoeimens. five, six, or seven suckers oooupv 

 tin- broadest part of the Itelt, tlie nuinlier decreasing towards the extre- 

 mities The lireadth of the stripe or Mt. and the numltor of the suckers, 

 depend on the -i/e and age of the subject. Small specimens have only a 

 double row of suckers in the stripe or belt ; nor art- all the five complete. 

 In one extending above thirty lines, including the head or anterior por- 

 tion, they stood single or somewhat zig-zag in a row. Plate II. fig. '2. 

 Thus they augment with age ; and in large specimens some appear 

 straggling over the body. 



Tin- usual asjK-et of the HiJntliuria pentn< > * is n presented, Plate I 

 when in a state of quiescent security. When absolutely inactive, it re- 

 semld.-s I'late II. I'IL'. I. rediice<l from the original, which extended twehc 

 inebea by four. This I concluded a full-grown subject. But I cannot 

 define the largest dimensions attained, certainly not under two feet, 

 with the tentacida displayed ; the body three inches thick or in 



The observer is always liable to delusion, however, in this respect, 

 owing to the animal's susceptibility of change and extraordinary disten 

 -ion. Sometime after the specimen. I'late I., was taken, it resembled the 

 figure and dimensions of the heart of an ox, while floating : next it ex 

 tended a foot long by four inches in diameter, and ultimately subsided to 

 the ]M-rmaneiit shape and size wherein it is represented. 



When the animals an- detached, they generally Hoat a.s long osoid.-. 

 ^ then turgid with water. One in that condition weighed four 

 pounds, \\hereof the l>ody might he one and a half, and water th' 

 mainder. But. the dimensions seem very much affected by cirvum 

 stances, such a.s freedom, fixture, health, or disease, and perhaps also 

 by the temperature of the atmosphere. 



The u--kers can IK- wholly retracted and sunk in the lloh The 



