CIRRIPEDS FKOM THE JUAN FERNANDEZ ISLANDS 



485 



The minor part of the material belongs to very typical L. anatifera 

 fig. I a—d) and agrees with the figures given by Broch (1924, fig. 15). Thus 

 the right scutum has an umbonal tooth which in the original description is 

 given as typical, but later on mentioned as a variable character (Weltner, 

 1900, p. 291). The carina is rather narrow and extends rather far up between 

 the terga. The praeumbonal part is distinctly forked, as seen from the fig. 



Fig. I. Lepas anatifera Linne. 



a typical specimen (total length 45 mm.); b the lower part of the scuta in ventral view, 

 showing an umbonal tooth on the right scutum; £■ carina, dorsal view; d the fork of the carina 

 seen from beneath; e more aberrant specimen (total length 62 mm); /the lower part of the 

 scuta in ventral view without umbonal teeth; g carina, dorsal view; h, i the forit of other 



individuals showing the variation. 



I c, d. I have nothing to add to the description of the terga. The internal 

 parts are also in perfect accordance with the figures given by Broch. 



The greater part of the specimens differs a little from the typical ones but 

 not sufficient to justify the description of a new variety. Both types grew 

 mixed among each other. Thus of three individuals of the same size, which 



