122 MARINE FAUNA OF ST. ANDREWS, 



Genus " Ioida," Johnst. 



"loida macrophthalma" Johnst. Cat. Brit. Mus. p. 197, 

 pi. 14 a. f. 5. 



Occasionally between tide-marks. This is the sexual bud 

 of a Syllis. Four or five of the segments anteriorly are devoid 

 of the long bristles. 



Fam. 11. Nereidffi- 



Genus Nereis, L. 

 Nereis pelagica, L. ; Mgrn. op. cit. p. 47, 

 Everywhere abimdant from high-water mark to the coralline 

 ground, and in the stomachs of many fishes. 



Nereis cuUrifera, Grube ; Ehlers, Die BorstenwUrmer, 

 ii. p. 461, pis. 18-20, 



Frequent between tide-marks under stones on muddy 

 ground, and in the stomachs of various fishes. 



Nereis Dumerilii^ Aud. & M,-Ed. ; Ehlers, op. cit. p. 535. 

 It is curious that only the epitocous form (olim Iphinerets 

 fucicola) has yet occm-red, viz. in the coralline region and on 

 the West Sands after storms. 



Genus Hediste, Mgm. 

 Hediste diversicohr, 0, F. MuUer ; Mgrn. op. cit. p. 49. 

 Occasionally between tide-marks, and after storms on the 

 West Sands, 



Genus Eunereis, Mgm. 



Eunereis longissima, Johnst. ; Mgrn, op. cit. p. 57. 



Occasionally cast ashore on the West Sands after storms. 



This is an epitocous form, the relations of which are at present 



in obscurity ; there is no known species with which it may be 



connected except those mentioned here. 



