88 BRITISH FRESHWATER RH1ZOPODA. 



ovoid in broad view, the crown arched, with a minute 

 pore on its apex; the sides tapering convexly down- 

 wards to the base where the mouth is visible in out- 

 line. Laterally the test is narroAvly elliptic, but the 

 sides, unlike those of H. minuta which taper almost to 

 a point, are uniformly convex, and the mouth appears 

 as a shallow notch, clearly outlined. The mouth, when 

 directed upwards to the eye, is seen to be small in 

 proportion to the size of the test, and elliptic. Colour 

 of the test yellowish. 



Dimensions : Length 65-70 p ; breadth 45-50 p. ; 

 in narrow lateral view 25-26 p.. 



First met with in boggy parts of Irlam Moss, near 

 Manchester, 1891 empty tests for the most part. 

 Also found in Sphagnum gathered in the Pentlands, 

 Midlothian, by Mr. W. Evans ; June, 1905. 



Examples from the widely - separated localities 

 mentioned evidently belonged to the same species, 

 although they presented differences, possibly to be 

 accounted for by difference of environment. It should 

 be stated that in the Lancashire locality only one or 

 two living examples were met with, and those not 

 exhibiting pseudopodia. The plasma was crowded 

 with food-particles, and for that reason, perhaps, the 

 animals were at the time dormant. Empty tests were 

 distinctly homogeneous, yellowish-coloured, and desti- 

 tute of surface-markings. 



Examples from the Pentlands had the same general 

 features, but the test was broader at the crow^n, and 

 the sides converged, in nearly straight lines, to the 

 base, the mouth also being smaller, forming an oval slit. 

 Owing to this peculiarity the test, viewed laterally 

 that is, with the narrow margin to the eye presented 

 an almost unbroken elliptic outline, as, with an aper- 

 ture so small, the notch was hardly perceptible. The 

 Pentland examples, moreover, varied amongst them- 

 selves, some being, as above stated, broader at the 

 crown than below, whilst others were more distinctly 



