VAN NAME: SIMPLE ASCIDIANS. 609 
to be well seen through the pale greenish or yellowish-white test. It 
is generally attached by the base and lower part of one side. The 
apertures are surrounded by a circle of bright lemon-yellow, and the 
ocelli are bright red. There are also two bright red spots connected 
with the nervous ganglia. The Ciona tenella (Stimpson) which is 
common in the Bay of Fundy has the circle around the aperture 
bright red." 
Distribution. — Region about Wood's Hole, Mass., New Bedford, 
Mass. (type locality), Newport, R. I., and other points in Narragan- 
sett Bay. It is worthy of mention that Professor Verrill never found 
it near Wood's Hole, and it may now be more common than formerly 
in that region. 
The writer is at a loss to which of the two New England varieties 
to refer specimens from Station 872 (N, lat. 40° 05' 39", W. long. 70° 
23' 52", 86 fathoms, sand, gravel, shells, and sponge) and Station 
1109 (N. lat. 40° 03', W. long. 70° 38', 89 fathoms, gray sand). 
