BOTRYLLUS RUBENS. 63 



x ri<l>riiN ALDER & HANCOCK in Trans. Tvncside Nat. 

 Field Club, I [1848], p. 204; [COCKS in Rep. It. Cornw. 

 1'olyt, Soc. for 1849 (1850), p. 74] . 

 \ButnjUnK nilirnui AXSTKD fk LATHAM Channel Isl. (1802), 

 p. 219.] 



Colony (PI. LXI, figs. 5 and <>) incrusting, thin, 

 transparent, yellowish-brown, with numerous opaque 

 yellow grannies. Ltiliciiliutlx (PI. LXI, fig. 7) varie- 

 gated with red and yellow, and of various shades from 

 reddish yellow to dark brick-red : a circle of dark red 

 usually surrounding the branchial aperture, with a 



FIG. 122. Botnjllus miens. Systems of from four to seven indi- 



viduals. Enlarged. 



second at a little distance from it, and an interrupted 

 streak down the centre of the thorax ; the remainder 

 of the body pale red or yellowish, thickly sprinkled 

 with minute yellowish white spots. The systems 

 (fig. 122) circular and a little apart, consisting of from 

 four to fourteen each : common [excretory] orifice 

 rather small. 



Diameter of the mass about an inch and a half to 

 two inches (38-50 mm.). 



Hal. On the underside of stones between tide- 

 marks. 



ENGLAND. Cullercoats, Northumb., frequent (Alder 



