24 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Maximum range from south bank of stream to below Bay Hotel 

 in a band about 20 yards wide at upper limit of damp sand. 

 (See Sketch Map 1). 



Description. Body broadly ellipsoidal in ventral 

 view, dorsoventrally flattened, rounded posteriorly and truncate 

 anteriorly, its length about 1*2 transdiameters at the widest 

 part. Epicone small and triangular with a length on the 

 dorsal side of 0'06, and on the ventral side of - 36 of the total 

 body length and a greatest breadth of 0*53 transdiameter. The 

 borders of the ventral portion converge posteriorly at an angle 

 of about 70°. Apex truncate. Hypocone broad with rounded 

 sides, and a broad, rounded, slightly notched antapex. Girdle 

 separating epicone from hypocone, both ends meeting ventrally 

 without displacement. Furrow deeply impressed with over- 

 hanging borders. Sulcus extending from girdle to antapex, 

 wide at its beginning, contracted below, owing chiefly to a slight 

 projection of the left border and expanding as it nears the 

 antapex, where it sometimes forms a deep notch. Transverse 

 and longitudinal flagella arising near each other at the junction 

 of the girdle and sulcus, probably from the same pore. Trans- 

 verse flagellum reaching almost completely round the body ; 

 posterior flagellum extending beyond the antapex for a distance 

 as great as the whole length of the body. 



Nucleus elongated and curved so as to form a crescent or 

 horse-shoe shape — placed posteriorly across the body with the 

 horns of the crescent directed anteriorly. Central part of the 

 cytoplasm occupied by a small spherical body containing a 

 central granule, from which radiate out towards the periphery 

 long slender chromatophores, pale yellow ochre in colour. 

 A second small spherical body is present in most individuals, 

 anterior and slightly to the left of the central one. In ventral 

 view it shows through the girdle about half-way between its 

 origin and the point where it passes over to the left dorsal side of 

 the body. Length, 40 to 50//. 



