NEBELA TENELLA. 123 



The surface crinkled or uneven, without a definite 

 arrangement of the amorphous scales which cover it ; 

 the marginal outline also being roughish. General 

 colour a light grey. 



Dimensions : Length 70-75 ju,. 



In Sfhagnum, chiefly from sub-alpine districts in 

 Wales and Scotland. Above Dolgam, Capel Curig 

 (/. Hophinson). Pentland Hills and Ben Ledi, and 

 in gatherings from Aberfoyle (W. Evans). 



Nehela tenella has a character of its own in the 

 thickened oral extremity, and in the generally rough 

 surface of the chitinous test, which detracts someAvhat 

 from its transparency. It affects sub-alpine bogs, and 

 (so far as our experience goes) does not occur in low- 

 land districts. We have frequently found it encysted, 

 the cyst appearing as a round ball occupying the centre 

 of the test in its broadest part. 



17. Nebela parvula sp. nov. 



(Plate XXVIII, figs. 20 and 21.) 



Test ovoid, small, membranous and transparent, with 

 a surfacing (sometimes almost or quite imperceptible) 

 of minute discs, colourless or yellowish ; perfectly 

 smooth. The outline ovoid (narrower in some examples 

 than in others) complete down to the neck, which is 

 short and abrupt ; the mouth truncated. In narrow 

 lateral view the test strongly compressed ; in dorsal, 

 or transverse view, narrowly elliptic. Protoplasm not 

 filling the entire cavity, attached to the test in its 

 upper portion by threads of ectoplasm ; the nucleiis 

 normally situated but more or less obscured by the 

 granular protoplasm. Pseudopodia four to six in 

 number, simple, short, and rather thin. 



Dimensions : Length 80 ix ; breadth 55 /x. 



In Sphagnum. Sychnant Pass, N. Wales._ Above 

 Dolgam, Capel Curig, N. Wales {J. Hopildnso'ii). Pent- 

 land Hills, Midlothian; and Ben Ledi, Scotland, in 



