TUNICATA OF THE L.M.B.C. DISTRICT. 258 
south end of the Isle of Man during the ‘“ Hyena” 
expedition of 1888. 
CoORELLIN&. 
Corella parallelogramma, O. F. Muller. 
A number of specimens of this form, our only repre- 
sentative of the sub-family Corelline, were dredged from 
the “‘Hyzna” on May 20th, 1888, between the Calf and 
Port Evin, from a depth of twenty fathoms. Some of them 
were adhering to the tests of Asczdiellu virginea. 
Family. CYNTHIID2. 
In the ‘‘ Challenger’? Report I divided this family into 
the three sub-families Boltenine, Styeline and Cynthine. 
We have no British representative of the Boltenine. 
STYELINA. 
Styela grossularia, van Beneden. 
In the former report this species was recorded from the 
Menai Straits and the Isle of Man. It has since been 
found as follows:—In various dredgings along the north 
coast of Anglesey during the cruise of the ‘‘ Hyena”’ in 
1886; in the ‘‘ Weathercock”’ expedition, September, 1886 
(on Pecten opercularis) ; under stones on the North Spit, 
Puffin Island, June llth, 1887, and July 24th, 1888; off 
the south end of the Isle of Man, between the Calf and 
Port Erin, in several hauls of the dredge from the 
“ Hyena,’ May 20th, 1888, depth twenty fathoms. 
These last specimens were of the small, flat, blister-like 
form, but many of those obtained off Anglesey from the 
“ Hyena,” in 1886, were elongated antero-posteriorly, and 
were closely crowded together on aggregated masses of 
sand grains and shell fragments, while others obtained at 
