Vax Name. — Compound Ascidians. 
PLATE 35. 
Fig. 2. ^Ius8el shell bearing colonies of Amaroucinm glahrum ^'errill and 
Tetradidemnum albidum (Verrill). From Station 2577 (off 
Massachusetts, N. lat. 41° 17', W. long. GS° 21', 32 "fathoms). 
Natural size. 
Fig. 3. Arnarouciitm pellucid um (heidy). Piece of a colony from Vineyard 
Sound, Mass., seen from one side, to show the form of the loliules. 
Natural size. 
