98 



MARINE FAUNA OF ST. ANDREWS. 



well as in Shetland. He observes {in lit.) that in this torm 

 there are no skin-spicula ; feet with a large, circular, cribrose 

 plate at the end, no spicula on sides ; tentacles cased in large 

 cribrose spicula of varied form — elongated, short, or most 

 elegantly irregular and branched. 



Tliyonidium commune, Forbes & Goodsir ; Forbes, Brit. 

 Starf. p. 217, and Norman, op. cit. p. 317. 



A fragmentary specimen in the stomach of a cod. 



Fam. Synaptidae. 

 Genus Synapta, Eschsch. 



Sunapia inhcerens, O. F. Miiller ; Dr. Herapath, Journ. 

 Micr. Sc. 1865, p. 4. 



[Plate IV. fig. 4, and Plate IX. figs. G, 7, & 8.] 

 The typical form occurs between tide-marks, as well as in 

 the laminarian region, the anchor-plates having six apertures 

 surrounding the central, and comparatively few openings in 



the narrow part to which the anchor is attached (see smaller 

 figure in woodcut, which represents both forms x 210 diam.). 

 Such agrees closely with examples from the Channel Islands, 

 the Hebrides, and other parts. An imperfect specimen from 

 the stomach of a haddock diverges very considerably in the 

 form of its anchor-plates (woodcut, larger figure), since the 



