Af'TINOrODOrS HOLOTHUEIOIDEA. 205 



The above table shows : (1) that the length of the body is 

 I)etweeii 2.5 — 5 times the breadth, the seeming differenecs being 

 largely due to the degree of contraction of specimens ; (2) that 

 the number of the lateral pedicels does not increase with the size 

 of the individuals, although the larger the individuals the larger 

 seems to be tlie absolute size of these pedicels ; (3) that the 

 number of dorsal i>apilke increases with the size of the in- 

 dividuals ; that is, the oldc^r the individuals, the greater tlie num- 

 Ix'r of dorsal i)apil!a\ Their absolute size does not however 

 increase as much as in the case of the lateral iiedicels. The last 

 two points are as in Laimogone violacea, and such seems to be 

 the case with all similar species. 



Tlie lateral ]iedicels are stated liy Theel to be ap- 

 parently disposed in a duublc row all along each sidc^ of the 

 lM)dy. TliL' word " ap[uavutly '" is very important; for an examina- 

 tion of a largu luuabrr of specimens convinces me that in life they 

 are in a single row, and that the double appearance is caused by 

 contraction in preservation. Similarly, the papillie of the dorsal 

 surface are stated by Tiieel to be disposed in three or four irreg- 

 ular close- set rows along each of the dorsal ambulacra. In all 

 the well-extended specimens I have examined, there are only two 

 rows along each of the dorsal ambulacra, one on the outer and 

 the other on the inner side of that ambulacrum. Each row has, 

 however, its papillie arranged in a zigzag line so that it may 1)0 

 described as alternately double. When the animal is contracted 

 in killing, it is very easy for a row to apjjcar double ; in such a 

 case there appear to be present three or four rows of papilla) on 

 each side. That they arc, however, in life in two rows is proved 

 by the fact that even in the same animal they appear in three 

 or four rows when contracted, and in two rows when well- 



