BUDDING TENTACLES OF GONIONEMUS. 



GEORGE T. HARGITT. 



While looking over specimens of Gonioncnnts for class work, 

 and being somewhat on the lookout for any cases of variation, 

 etc., my attention was arrested by an unusual appearance of a 

 tentacle. Near the distal end was present a small knob which 

 at first glance appeared simply as a protuberance, apparently 

 without any very definite form or structure. 



On further and more careful examination it seemed to me to 

 warrant a careful study. It was somewhat similar to some of 

 the conditions found by Hargitt l in his work on the variation of 



FIG. i. 



FIG. 2. 



this form. The conditions referred to are the presence of bifur- 

 cated tentacles. He found a number of tentacles which had 

 double, or in one case triple tips. In all these cases the extra 

 tip or bud seemed to arise either from the suctorial pad or else 

 immediately proximal to it. Fig. I represents a rather typical 

 example of bifid tentacle. The specimen is one I found in C. 



111 Variation among Hydromedusce," BIOL. BULL., Vol. II., No. 5, 1901. 



241 



