112 
MARINE FAUNA OF ST. ANDREWS. 
Subclass CHiETOGNATHA. 
Genus Sagitta, Slabb. 
Sagitta bipunctata , Quoy & Gairaard (?), 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 Pleurobrachia ; 
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, which 
glistened all along the beach like needles of glass. 
Subclass GEPHYREA. 
Fam. Echiuridea, J. V. Cams. 
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. Y. Carus. 
Genus Phascolosoma, F. S. Leuck. 
Phascolosoma Harveii, Forbes; Baird, loc. cit. p. 82. 
Abundant in the stomachs of cod and haddock. 
Phascolosoma Strombi , Montagu; Baird, loc. cit. p. 86. 
Common in deep water in Dcntalium , Turritella , and 
Aporrhais. 
* Journ. of Microscop. Science, 1856, p. 14. 
