94 BRITISH TUXICATA. 



Cynthia echinata [ ALDER in Trans. Tyneside Nat. Field 

 Club, I (1850), p. 362; FORBES in Rep. Brit, Assoc. for 

 1850 (1851), p. 242; STIMPSOX Invert. Grand Manan 

 (1854), p. 20; SCHULTZE in Arch. f. mikr. Anat, XII, 2 

 (1862), p. 178;] ALDER in Ann. Nat. Hist. (3) XI [1863], 

 p. 162, [and in Rep. Brit, Assoc. for 1866 (1867), p. 208; 

 PACKARD in Mem. Boston Soc. Nat. Hist. I (1867), p. 277 ; 

 NORMAN in Eep. Brit. Assoc. for 1868 (1869), p. 303; 

 AGASSIZ in Gould's Rep. Invert, Massachusetts, ed. 2 

 (1870), p. 18, pi. xxiii, f. 326]. 



\_Ascidium echinatum WOODWARD Man. Moll. (1856), p. 337.] 



Body globose, hispid, adhering by a small base. 

 Apertures sessile, approximated, rayed with four double 

 lines of crimson. Test opaque, yellowish white, tough, 

 mamillated ; each eminence crowned with a tuft of 

 large branched and stellate hairs ; the whole of the 

 surface is also seen, under a magnifier, to be minutely 

 hispid ; inner surface silvery. Mantle pale flesh- 

 coloured. Tentacular filaments branched, bi- or tri- 

 pinnate. Branchial sac with six folds on each side, 

 four deep and two shallow ; the meshes transverse. 

 Ovaries in solid masses. 



Diameter about three quarters of an inch. 



Hab. On shells, on zoophytes, [and on the larger 

 Ascidix.,] in deep water [and occasionally in shallow 

 water]. 



ENGLAND. Cullercoats, Northumb. (Alder). Whit- 

 burn (Alder [1850]), and Seaham Harbour (Hodge), 

 Durham. 



SCOTLAND. --Peterhead, Aberdeen (Peach). Oban, 

 Argyll (Alder). Hebrides (Jeffrey* [; Forbes]). Shet- 

 land (Forbes fy Good.sir). [Middle Haaf and Brassey 

 Sound, Shetland, in 5 to 40 fathoms, 1863, and 5 to 

 8 miles east of Balta, in 40 to oO fathoms, 18(37 

 (Norman, 1868).] 



IEELAND. - - Strangford Lough, Down (Thompson 

 [1840]). 



First record. Forbes & Hanley, 1848; \coll. Forbes 

 & Goodsir, 1837]. 



