EXPLANATION OF PLATES ■ 



PLATE 38 



Fig. 1. Styela montereyensis. Whole animal. Natural size. 



Fig. 2. Styela barnharti. Whole animal, a little larger than natural size. 



Fig. 3. Colonies of Macroclinum par-fustis, joined by basal stolons of test. 

 Natural size. 



Fig. 4. Colonies of Amaraucium aequali-siphonis joined by basal stolons of 

 test. About twice natural size. 



Fig. 5. Molgula verrucifera. Three animals. X 2. 



Fig. 6. Ascidia californica. Whole animal. Natural size. 



Fig. 7. Polyzoa translucida. Zooids joined by basal stolonie network and 

 growing among the branches of a young hydroid. Natural size. 



Fig. 8. Metanclrocarpa michaeJseni. Zooids connected by trails of test. 

 Natural size. 



[494] 



