576 
Charles Zeleny 
TABLE 2 
Ophioglypha lacertosa—One arm removed at base 
22 DAYS 33 DAYS | 46 DAYs 
i i Specific | Specifi 
ak Length of pEeenE | Length of piece Length of are Remarks 
diameter amount of | amount of amount of 
regenerat- | regenerat- | regenerat- 
: regenera- | . regenera- | . regenera- 
ing arm : ing arm : | ing arm : 
tion tion tion 
4.8 0.15 0.03 0.2 I torogt | 0.0 
6.5 0.45 0.07 O.1 | SOROR Mae te 
6.6 ea O.29 | 2g Nl) OngGO Mae eae 0.45 
I1.0 0.6 0.05 | ZO 0.18 | 2.0 0.18 
11.2 2.0 0.18 3.0 0.27 4.0 0.36 
13.2) 0.2 0.01 2.0 0.15 2.1 0.23 
13.5 dead (22) 
14.5 1.0 0.07 dead (33) © 
19.8 0.0 0.0 | 0.0 
Tables 2,3, 4 and 5. The animals are arranged in order of size. The specific amount of regenera- 
tion is the regenerated length per unit of disk diameter. The individuals were not fed during the 
course of the experiment. 
TABLE 3 
Ophioglypha lacertosa—Two arms removed at base 
22 DAYS 33 DAYS 46 pays 
Disk Average Specific Average | Specific Average | Specific Renu 
diameter | length of | amount of | length of | amount of | length of | amount of 
regenerat- | regenera- | regenerat- regenera- | regenerat- | regenera- 
ating arms tion | ing arms | tion ing arms _ tion 
6.0 | | dead (22 
6.5 0.55 0.08 0.45 0.07 0.0 
49) 1.9 0.22 1.9 222) 2.0 0.23 
10.8 1.8 0.17 1.6 0.15 0.65 | .06 
13.0 | | dead (22) 
13.5 1.25 0.09 2.3 oy) sho) 0.26 | 
14.0 1.8 0.13 3-0 | at = aie 24 al 
15.0 0.85 0.06 BAS | Gotta) 4.05 :27 
19.3 0.0 0.0 | °.0 
