146 BRITISH TUNICATA. 



rather thin, semitransparent, orange-coloured. Ten- 

 tacular filaments small, short, and slightly obtuse. 

 Branchial sac (PI. XLVI, fig. 16, and fig. 81 in text) 

 with rather distant rows of elliptical stomata. 



Lena t]/ [two and a half inches]. 



Hal). Deep water [in the mud-filled cavities of old 

 shells]. 



ENGLAND. [Berwick (Johnston) ;] Cullercoats, from 

 the fishino'-boats, rare ( A Ider, 1 848) ; Nortkumb. Sea- 

 ham Harbour (Hodge) ; [Whitburn (Alder, 1850);] 

 Durham. [Falmouth, Cornwall ; in trawl refuse 

 (Cocks, 1849).] 



SCOTLAND. [Anstruther (Forbes $ Goodsir, 1840) ; 

 St. Andrews (Mcliitoth, 1866) ; Fife.] Firth of Forth 

 (Dalijdl, 1848). [Off Shell Bay, Cumbrae, Firth of 

 Clyde, in 6 to 15 fathoms (Norman, 1857). Island of 

 Balta, Shetland (Nornmn, 1868).] 



First record. Forbes & Goodsir (1840) ; coll. Goodsir. 



Forbes and Goodsir do not notice the villose surface 

 of this species, by means of which it is generally more 

 or less covered with fine sand or mud. The P. villvxn 

 of Sars, separated from it on account of this character, 

 is, we have no doubt, the same species, as is also pro- 

 bably the P. arenifera of Stimpson. Its range there- 

 fore appears to extend to Finmark in the Arctic seas, 

 and to Massachusetts Bay in North America. 



2. Pelonaia glabra Forbes & Goodsir. 

 (Figs. 83 and 84.) 



Pelonaia glabra FORBES & GOODSIE [in Rep. Brit. Assoc. for 

 1840 (1841), Sect. p. 128, and] in Edinb. new Philos. 

 Journ. XXXI [1841], p. 30, pi. i, ff. 2, 3; FORBES & HANLEY 

 Brit, Moll. I [1848], p. 43; [COCKS in Rep. R. Cornw. 

 Polyt. Soc. 1849 (1850), p. 243; RUPERT JONES in Cycl. 

 ' Anat. IV, pt. 40 (1850), p. 1239, f. 789 ; FORBES in Rep. 

 Brit. Assoc, for 1850 (1851), p. 242 ; NORMAN in Zoologist, 

 XV (1857), p. 5708]. 



[Pelontea <jlabra WOODWARD Mai). Moll. (1856), p. 338, pi. 

 xxiv, f. 3.] 



