130 UNITED STATES NATIONAL MUSEUM BULLETIN 251 



Figure Vx—Distaplia mikropnoa (Sluiter): a. The 33 mm. colony from sta. 125-1189; 

 b, right side of a zooid from same colony; c, longitudinal section of intestine at level of A, 

 in b; d, postabdomen of same zooid; e, left side of intestinal loop of same zooid;/, right 

 side of a zooid from small 10 mm. colony from sta. 125-1187; g, anus of same zooid; 

 h. circumintestinal gland (?) of same zooid. 



