312 CHAS. W. HARGITT. 



any strict morphogenic sense, directly derived from tentacles, 

 particularly such bodies as those here under consideration. 



Reproduction. 

 There is nothing to add to the former announcement as to this 

 feature. Only male specimens have been found. These were 

 in various stages of maturity, some quite young, others sexually 

 mature, with gonads bursting with ripe spermatozoa. In the 

 absence of additional facts there is no particular call for specula- 

 tions as to the significance of this singular sexual phenomenon. 



Affinities of the Medusa:. 



Concerning the question of the specific or generic relations I 

 find little occasion for difference of opinion or doubt. That our 

 specimens belong to the genus Limnocodium seems thoroughly 

 clear and certain. That it is also specifically identical with the 

 European species, L. sower bit Lankester, seems almost equally 

 certain. I have pointed out certain features of difference, such as 

 the shape of the bell as compared with Boecker's description, and 

 peculiarities of tentacular structure, rather sharply different from 

 those described by the earlier observers. Yet neither of these, 

 nor both combined are such as to warrant the probability of a dis- 

 tinct species. Hence the suggestion made in my preliminary 

 report may be here reiterated, namely, that the American species 

 is almost certainly Limnocodium sowerbii. 



The following characters may be regarded as fairly diagnostic 

 of the species : Bell rather low, two or three times as broad as 

 high, discoid in shape, especially when floating freely as shown 

 in Fig. 2. Size from 5 to 9 mm. in diameter, by about 4 mm. 

 in height, or less in average specimens ; radial canals four, rather 

 capacious, extending from stomach to marginal canal, which is 

 triangular in shape and large ; gonads four, suspended from the 

 radial canals about midway between the stomach and margin, 

 pouch- like in shape with the smaller or distal end free, as shown 

 in the figures, pale greenish in color ; manubrium long, and with 

 four more or less crenulated lip-like lobes which are of greenish 

 tint, and extending usually considerably beyond the velum ; ten- 

 tacles very numerous, the four perradial ones being conspicuously 



