74 One Thousand Objects 



pretty star-fish makes an attractive object. It, unfortu- 

 nately, cannot be considered common. 



553. GREY BRITTLE STAR (Ophiocoma neglecta). May 

 be found in tide-pools at the base of small seaweeds, or 

 amongst the filaments (byssus) of mussels. Often less 

 than an inch in expanse, it may be mounted whole. 



554. COMMON BRITTLE STAR (Ophiocoma rosula). 

 Even more common than the last, congregating on the 

 edges of scollop banks, from whence they may be dredged, 

 and mounted entire. 



555. COMMON SUN-STAR (Solaster pappofa). With 

 twelve to fifteen rays, frequenting oyster-beds. Small 

 specimens, three-quarters of an inch in diameter, are 

 desirable objects. 



556. PEDICELLARIA OF STAR-FISH (Uraster rubens). 

 These curious beak-like processes from the upper surface 

 of the common ' Five-fingers ' should have a place in every 

 cabinet. 



557. SPINES OF EGG URCHIN (Echinus sphtzrci). The 

 small spines of this urchin, and also the pedicellarias, may 

 be commended to notice. 



558. SPINES OF HEART URCHIN (Amphidotus cordatus). 

 The commonest of all Heart Urchins, with hair-like 

 spines. The enclosed animal sometimes contains a good 

 collection of diatoms. 



559. SOLE SKIN (Solea vulgaris). Fish-scales are 

 favourite objects. Those of the Sole have a very spiny 

 free margin, and should be seen attached to a portion of 

 the skin as an opaque object. 



560. PERCH SCALE (Perca fluviatilis). More or less 

 square, with rounded angles; lobed at one extremity, 

 and spiny at the other ; the spines diminishing towards 

 the centre. Closely traversed with concentric lines, 

 except at the spiny end. 



561. ROACH SCALE (Leuciscus nttilus) . Nearly circular, 

 K'ith a wavy margin and one flattened side. Concentric 

 fines more distant as they approach the centre, where they 

 are obliterated. 



562. PIKE SCALE (Esoxluaus). Oblong, with a raised, 



