Van Nauie. — Compound Ascidians. 
PLATE 39. 
Fig. 10. BntryUus sddosseri (Pallas). Colony from Wood's Hole, Mass. 
Natural size. 
Figs. 11, 12. Lissnrlhiiwi nurcum Verrill. Two colonics containing numer- 
ous spicules in the test substance. From Eastport, Maine. X 2.5. 
Fig. 13. Tetradidcmnum. albiduin (Verrill). Small colony from Eastport, 
Maine. X 2.5. 
Fig. 14. Lcptoclinides faerdensis Bjovkun. Colony from off Newfoundland. 
Natural size. 
Fig. 15. Didennmpsis tcncvuin (Verrill). Colony from the Bay of Fundy. 
X 2.5. 
Figs. IG, 17. TAii^oclinum nurcum Verrill. Two colonies (one of them broken) 
containing very few spicules in the test substance. From the Bay 
of Fundy. X 2.5. 
