112 MARINE FAUNA OF ST. ANDREWS. 



Subclass CHiETOGNATHA. 

 Genus Sagitta, Slabb. 

 Sagitta bipunctata, Quoy & Gaimard (?) , Krohn. 

 Vast numbers were found on the West Sands, after a 

 severe storm, in January 1867. They were scattered amidst the 

 foam on the beach along with multitudes of Pleurohrachia ; 

 and it is curious that very little else was cast ashore at this 

 time. The season is remarkable, as Prof. Busk, who is the 

 author of a most valuable paper * on the structure and rela- 

 tions of the animal, thought it would chiefly be procured in 

 fine and calm weather in the towing-net. They were re- 

 cognized by the active movements of their bodies, wliich 

 glistened all along the beach like needles of glass. 



Subclass GEPHYREA. 



Fam. Echiuridea, J. V. Carus. 



Genus EcHiURUS, Cuvier. 



Echiurus vulgaris^ Sav. ; Baird, Proc. Zool. Soc. 1868, p. 109. 



[Plate IV. fig. 1.] 



Abundant amongst the debris on the West Sands after 



storms. 



Fam. Sipunculidea, J. V. Carus. 

 Genus Phascolosoma, F. S. Leuck. 

 Phascolosoma Harveii, Forbes ; Baird, loc. cit. p. 82. 

 Abundant in the stomachs of cod and haddock. 



Phascolosoma Stromhi, Montagu ; Baird, loc. cit. p. 86. 

 Common in deep water in Dentalium, TurriteUa, and 

 Aporrhm's. 



* Journ. of Microscop. Science, 1856, p. 14. 



