Barnacles of the Genus Megalasma. 



365 



M. rectum, Pilsbry, in which the "auriculate" structure of 

 the base of the carina suggests the beginning of such a 

 transverse expansion as is seen in this species. 



Fur. 1. 



Megalasma {Glyptelasma) pilsbry i, sp. 11., holotype. 



A. Lateral view, outlines of valves as seen after partial removal of cuticle. 

 B. Basal angle of scutum, inner surface. 0. Carina, inner surface. 



Megalasma {Glyptelasma) pilsbryi, sp. n. 

 (Text-figs. 1 and 2.) 



Localities.— Lat. 9° 15' S., long. 115° 10' E., 800-1500 

 fath. 1 specimen. 



Lat. 10° 45' S., long. 120° 50' E., 700 fath. 2 specimens 

 (including holotype). 



Lat. 11° 0' S., long. 121° 30' E., 500 fath. 1 specimen. 



