370 APPENDIX. 



flexible (if such it be) a\icularium from the truly articu- 

 lated and moveable avicularia, in tbe form of bird^s heads, 

 and which form does not occur in the genus Scrupocellaria. 



a, — Operculat^. Cells furnished with a pedunculate 



operculum. 



1. S. cervicornisj n. sp. 



Veins or channels in the oval operculum, branching so 

 as to resemble the antlers of a stag. The marginal spine 

 next above the pedunculated operculum, bifurcate. 



Hab. — Off Cumberland Islands, 25 fathoms, fine grey- 

 mud. 



A small, delicate, parasitic species, very transparent. 

 The very peculiar markings on the operculum at once dis- 

 tinguish it. The upper margin of the mouth is furnished 

 with five elongated spines, the innermost of which is forked 

 at the extremity. 



2. S. diadema, n. sp. 



Cells elongate, external side nearly straight, vibraculum 

 sublateral, very prominent. Limit of operculum entire, or 

 obscurely bi-trilobed. A flexible avicularium in fi'ont. 

 Ovicell usually with a single row of four or five openings 

 immediately above its mouth. 



Hab. — Moreton Bay. 



b. Inoperculat^. Cells without a pedunculate oper- 

 culum. 



3. >S. cyclostoma^ n. sp. 



Opening of cell nearly or quite circular, margin much 

 thickened, with three or four short indistinct spines above. 

 Vibraculum sublateral. A flexible avicularium in front. 

 Ovicells — ? 



Hab. — Bass Strait, 45 fathoms. 



4. S, ferox, n. sp. 



Opening of cell broad oval, pointed below ; three short 



