422 ALLAN HAXCOCK PACIFIC EXPEDITIONS VOL. 12 



PLATE 53 



Fig. 1. .J inpJiiroa compressa v. tenuis. Three pieces on, or from, 

 small bivalve shells, showing the more erect habit, 

 narrower segments, and obsolete auricles which dis- 

 tinguish this plant from the species as shown in the 

 preceding plate. From alcohol-preserved material. Ec- 

 uador. X 1.9. 



Figs. 2-4. Jania un{/ulata. Three areas from somewhat damaged, 

 dried specimens. In the absence of ample fluid-preserved 

 material it \vas not possible to dissect out representative 

 plants to show the habit in full. However these, es- 

 pecially figs. 2 and 3, do show the habit of the tipper 

 branching and the short, broad terminal segments quite 

 well. I. Isabela. x 10.0. 



