A FEW MEDUS.E NEW TO WOODS HOLL. 15 



and like the specimens of Aglaura were devoid of tentacles. Fig. 

 2 will give a good impression of the medusa. In size the speci- 

 mens varied from 6 to 10 mm. in broad diameter by slightly more 

 than half as high. Bell subhemispherical in shape with a solid 

 apical projection. Radial canals eight in number, and with gonads 

 borne about the median region on the under side. Manubrium 

 urn-shaped and with flaring, slightly quadrate lips. Color trans- 

 parent, with an evident iridescence, manubrium dull white, as are 

 also the gonads in formalin specimens. In most respects it agrees 

 fairly well with the description of RJwpaloncma typicum Maas. 

 from the west coast of Mexico, and later by Agassiz and Mayer 

 from the tropical Pacific. 1 



While the occurrence of the same species in a comparatively 



FIG. 3. 



high latitude of the Atlantic might seem somewhat improbable, 

 still I am not able to distinguish sufficient differences in specific 

 characters to warrant considering it a new species. As intimated 

 above, the somewhat damaged condition of the specimens and 

 inability to distinguish otocysts may afford characters when de- 

 termined to justify a different conclusion. 



In Fig. 3 is shown another medusa not hitherto recorded from 

 the region. As will be seen it bears some resemblance to the 



i Cf. Mem. Mus. Comp. Zool., Vol. XXVI., No. 3. 



