74 BRITISH TUNICATA. 



son}. Attached to stems and fronds of Fncux serratus, 

 etc. (Cocks). ~\ 



Very generally distributed around our shores 

 (Forbes). 



ENGLAND. Oullercoats and Whitley, Nortliumb. 

 (Alder $ Hancock). [Brighton, Sussex (Merrifield). 

 Selly's, Oliver's, and Glasson's beaches, Falmouth, 

 Cornwall (Cocks). ~\ 



SCOTLAND. Peterhead, Aberdeen; and A\ r ick, Caith- 

 ness (Peach). 



IRELAND. North coast, chiefly on Lamina ria digi- 

 tata, more common than 1>. Schlosseri ; [Belfast 

 Lough, Antrim; Strangford Lough, Down] (Thomp- 

 son). 



First record. -Thompson, 1840. 



9. Botryllus castaneus Alder & Hancock. 

 (Plate LXIII, figs. 3 and 4.) 



Botryllus castaneus ALDER & HANCOCK in Trans. Tyneside 

 Nat. Field Club, I [1848], p. 205; FORBES & HANLEY 

 Brit. Moll. II [1849], p. 371 ; [CocKS in Rep. R. Cormv. 

 Polyt. Soc. for 1849 (1850), p. 74]. 



Colony (PI. LXIII, fig. 3) a thin, pellucid, nearly 

 colourless crust, with scattered brown granules and 

 blackish marginal tubes. Individuals large, arranged 

 in irregular systems of from six to ten (PL LXIII, 

 fig. 4), of a chestnut colour irregularly blotched with 

 purplish brown and minutely sprinkled with opaque 

 white. Branchial apertures small; their lobes rather 

 distant and surrounded with a few large opaque 

 yellowish- white globular bodies. 



Diameter of mass four or five inches (100-1 27 mm.). 



Halt. On the underside of stones in pools between 

 tide-marks. 



ENGLAND. Cullercoats, Nor thumb., rare (Hancock). 

 [Selley's beach, Falmouth, Cornwall (Cocks).'] 



First record. Alder & Hancock, 1848; coll. Han- 

 cock. 



