440 University of California Publications in Zoology [Vol.16 



LIST OF SPECIES 

 Family Molgulidae 



1. Molgula verrucifera, n. sp. 

 Family Halocynthiidae 



2. Halocynthia johnsoni Ritt. 

 Family Styelidae 



3. Styela montereyensis (Dall) 



4. Styela gibhsii (Stimp.) 



5. Styela harnliarti, n. sp. 

 Family Aseidiidae 



6. Ascidia calif ornica, n. sp. 

 Family Rhodosomidae 



7. Cheylosoma product um Stimp. 

 Family Cionidae 



8. Ciona intestinalis L. 

 Family Polyzoidae 



9. Metandrocarpa dura (Ritt.) 



10. Metandrocarpa michaelseni, n. sp. 



11. Folyzoa translucida, n. sp. 

 Family Botryllidae 



12. Bolryllus tuberatus, n. sp. 



13. Botrylloides diegensis, n. sp. 

 Family Perophoridae 



14. Perophora annectens Ritt. 

 Family Polycitoridae 



15. Distaplia oecidentalis, n. sp. 



16. Eudistoma psammion, n. sp. 



17. Eudistoma diaphancs, n. sp. 

 Family Didemnidae 



18. Didemnum carnulentum, n. sp. 



19. Didemnum carnulentum lacteolum, n. var. 



20. Trididemnum dellavallei, n. sp. 



21. Diplosoma pizoni, n. sp. 



22. Diplosomoides caulleryi, n. sp. 

 Family Synoicidae 



23. Glossophorum planum, n. sp. 



24. Macroclinum par-fustis, n. sp. 



25. Macroclinum pellucidum, n. sp. 



26. Amaroucium calif ornicum, n. sp. 



27. Amaroucium solidum, n. sp. 



28. Amaroucium aequali-siplionis, n. sp. 



29. Euherdmaiiia claviformis Ritt. 



To be added to these without much doubt, because known from 

 depths of 50 fathoms and less are : 



1. SalocyntJiia olcai Ritt. 



(Known in depth of 10-80 fath. Ritter, 1907.) 



2. Microcosmus transverstis Ritt. 



(Known in 33 fath. Ritter, 1907.) 



3. Boltenia cchinata Ritt. 



(Known in 21 fath. Ritter, 1907.) 



