964 Mr. A. Hancock on new Species 
posed of only two or three stout coils. Tentacular filaments 
numerous, slender, not very long, set rather close together, in 
a single line on a narrow muscular band. Ventral plait broken 
up into upwards of thirty tentacular processes, which are wide 
at the base, attenuated upwards, and produced and pointed at 
the extremity. Length 12 inch, but usually smaller. 
. ovata was found by the Rev. A. M. Norman at low-water 
at Tobermory, in the island of Mull, in 1866, associated with 
Ascidia rubicunda, and adhering to Plocamium coccineum. It 
has also been found at Roundstone, Connemara, by Mr. A. G. 
More, occurring in clusters attached to the test of Ascidia 
Normani. 
This delicate species is distinguished from its two congeners 
by the general form, and particularly by the character of the 
branchial spirals, which in C. ovata are not by any means so 
many times coiled as they are in both the other species; and 
the coils themselves are much stouter. In C. parallelogramma 
and C. larveformis the spirals are six or seven times coiled, 
while in C. ovata they are only two or three times coiled. | 
Genus Crona (Savigny), Fleming. 
not reaching to the bottom of the mantle; the meshes recti- 
viously done, by raising Savigny's third tribe, Phallusice Comm 
: Iti 
Ciona fascicularis, Hancock. 
Body much elongated, subcylindrical, flaccid, highly con- 
tractile, colourless, or tinged yellowish from the mantle an 
viscera appearing through; attached by the side of the base; 
the lower extremity with numerous rather long, cylindric 
is z x y ; 
SS Oe —ÜÉÉÓÓB EP pee" 
