PACIFIC TUXICATA OF U.S. NATIONAL MUSEUM 



59 



Figure 18.— Euherdmania digitata Millar: a, entire colony; b, right side of a zooid; c, right 

 side of thorax; d, right side of posterior half of abdomen and anterior half of postab- 

 domen; e, distal end of postabdomen. 



probably at least 22 mm. in length when alive and extended. Zooids 

 orange brown as a whole, partially sprinkled with violet-brown pig- 

 ment, firmly embedded in the test and surrounded by tissue contain- 

 ing densely reddish- orange corpuscles. No remarkable constriction 

 between the thorax and abdomen or between abdomen and postabdo- 

 men. Postabdomen about half as long as abdomen. Both apertures 6- 

 lobed, atrial aperture opening at tip of a short siphon situated at level 

 of anterior end of brachial sac. A number of longitudinal muscles on 

 each side of the thorax, the exact number could not be counted clearly. 



206-101— G7- 



