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WILLIAM A. KEPNER AND ARNOLD RICH 



2. A specimen was impaled upon a needle point near the 

 right-hand margin of the proboscis. The animal, in freeing it- 

 self, made a tear in its body that passed obliquely from near 

 base of proboscis-sheath posteriorily to right margin of body 

 (fig. 7, A). The proboscis swung out from this rent and pro- 

 jected as a passive, quiet object. Next the sheath and poste- 

 rior part of the body were torn away leaving the proboscis trail- 



Fig. 7 A, rent made at right side of proboscis near its base, proboscis swung 

 out, inactive; B, posterior portion of body removed, proboscis inactive; C, dorsal 

 ganglia removed, proboscis inactive; not accepting food (F); D, further portion 

 of anterior part of body removed,- proboscis inactive, not accepting food (F) ; 

 E, cut made near base of proboscis, proboscis active. 



ing behind the swimming animal (J5). In this condition the 

 proboscis remained perfectly quiet. The dorsal ganglia were 

 amputated and a piece of food pushed after the swimming ani- 

 mal near the mouth of proboscis, but as yet there was no re- 

 action on the part of the proboscis (C). One-half or more of 

 the remaining anterior portion of the body was cut off. After 



