82 



BRITISH FRESHWATER EHIZOPODA. 



pai^t, or sometimes with one also in the centre of the 

 crown ; the sides converging gradually in straight 

 lines from the crown downwards to the slightly-con- 

 vex mouth. In narrow lateral view elongate-pyri- 

 f orm, the mouth forming a shallow notch ; in dorsal or 

 transverse view narrowly elliptic. The plasma often 

 crowded with bright green chlorophyllous particles, 

 with oil-like globules large and small, and much granulai' 

 matter ; attached to the inteinor of the test at the sides 

 and on the crown with threads or bands of ectoplasm. 



Pig. 79. — Hyalosphenia papilio. x about 350. 



The nuclevTS large, its position usually indicated by a 

 pale space in the upper part of the body, but obscured 

 more or less by the contents of the plasma ; one or 

 more vacuoles usually visible in the anterior region. 

 Pseudopodia digitate, colourless, from two to six, 

 simple, blunt. 



Dimensions ; Length 110-140 /a. 



In swampy places amongst l^pliagnnni ; Knutsford 

 Moor, Cheshire, associated with H. elegann Leidy, and 

 other species, On the moors about Whitworth and 

 Rawtenstall, Lancashire (J. E. Lord). Abundant in 

 the Capel Curig district, N. Wales {J. Hophinson). 

 Pentland Hills and Midlothian, Scotland {W. Evans). 



