A FEW CCELENTERATES OF WOODS HOLL. 



IOI 



In the summer of 1904 the writer described an apparently 

 new species of hydroid from Long Island Sound, namely, 

 Syncoryne linvillei (Biol. Bull., Vol. VII., p. 351). Not having 

 access at the time to McCrady's monograph, and with the 

 current confusion above referred to still more or- less dominant, 

 the details of McCrady's 

 description of Corynitis 

 were wholly overlooked. 

 A more recent and critical 

 examination of this has 

 clearly convinced me that 

 the hydroid in question is 

 quite identical in its generic 

 relations with Corynitis, and 

 should be so ranked here- 

 after. Whether it is spe- 

 cifically the same as C. 

 agassizii must remain more 

 or less uncertain, at least 

 till it may be possible to 

 have specimens of free me- 

 dusae for comparison, these 

 having been lacking in the 

 material from which my 

 description was drawn. 



That there may be no doubt whatsoever as to the facts con- 

 cerned, or of the confusion alluded to, it seems worth while to 

 present several of McCrady's figures with others, and to include 

 also some summary of his descriptions. 



Concerning the hydroid, his description is rather inadequate 

 and indefinite. " The larva is a coryne with a short, thick polyp 

 and few tentacula. The medusa-buds borne in the usual posi- 

 tion, and the peculiar character of the tentaculiferous bell-margin 

 is conspicuous at an early age." Of the habitat of the hydroid 

 he says: "The coryne which bears this medusa is rather rare, 

 as is also the medusa. It is found growing on sponges a little 

 above dead low water mark. It has been found during the 

 summer months and whether or not it exists during the winter 



Fig. 



