110 CATALOGUE OF THE MOLLTJSCA 



Our specimens are paler than those described by M. Milne 

 Edwards, being of an ochreous yellow, with only a tinge of 

 orange at the sides. The mass frequently forms a cluster of dif- 

 ferent sized flattened balls. The general apertures, irregularly 

 disposed over the surface, are large and prominent. 



130. LEPTOCLINUM, Milne Edwards. 



1. L. PTJNCTATUM, Forhes. 



Leptoclinum punctatum, Forb. and Hani. Brit. Moll. i. 18. 

 On the under side of stones between tide-marks, Cullercoats 

 and Whitley, not uncommon. 



131. BOTRYLLUS, Gcertner. 



1, B. ScHLossEBi, Pallas. 



Botryllus Schlosseri, Forb. and Hani. Brit. Moll. i. 19, t. A, 

 f. 7. 

 Incrusting the under side of stones, and on the stems of the 

 larger Fuci, between tide-marks and a little beyond, common. 



This species may usually be known by a red spot on the thorax 

 of each individual composing the stars, though in one or two in- 

 stances within our knowledge it has been wanting. The general 

 envelope is thick and rather tough. 



2. B. RUBENS, Aid. and Hanc. 



General envelope thin and transparent, dull brown, with nu- 

 merous opake yellow granules. Individuals forming circles, or 

 stars, of from four to fifteen, generally averaging seven or eight ; 

 their colour is various shades of red, from reddish-yellow to dark 

 brick-red : there is usually a circle of dark red round the 

 branchial aperture, and at a little distance from it, and a streak 

 of the same down the centre of the thorax ; the remainder of 

 the body is pale red or yellowish, thickly sprinkled with opake 

 yellowish-white spots. General aperture of each system, rather 

 small. The stars are smaller, and not so closely set as in the 

 last species. 



On the under side of stones between tide-marks, Cullercoats, 

 frequent. 



We have occasionally seen the central red line of the body so 



