LESQUEltEUSIA 1N.SQUALIS. 73 



the test in its broadest part exceeds, as a rule, that 

 taken longitudinally from the extremity of the neck 

 to the crown. The test is chitinous, transparent, and 

 covered externally with the same interlacing curved 

 " rods " as in L. spiralis these, if anything, being 

 longer and thinner. It has a short neck, which is 

 sharply truncated ; the mouth not contracted. The 

 upper surface of the neck has two slight elevations 

 which give it a w r avy outline. Nucleus and pseudo- 

 podia as in L. spiralis, generally simple. 



Dimensions: Length 135 /z, (from mouth to summit 

 of test) ; breadth 125 /z. 



At Dunham, Cheshire, amongst Sphagnum, 1904 

 and later, associated with others of this genus. 



Were it not for the appearance of this peculiar 

 Lesquereusia year by year, we might regard it as an 

 abnormal form of L. spiralis. It has, however, 

 characters quite distinct and without variation in the 

 numerous individuals examined. It may be at once 

 differentiated from the last-named species by the 

 peculiar, unequally balanced test. Like others of the 

 genus the animal is usually very active. 



Genus 21. PHRYGANELLA Penard, 1902. 



Difflugia (pars) HERTWIG & LESSER in Arch. mikr. Anat. X 



(1874), Suppl. p. 107. 

 Pseudodifflugia, (pars) PENARD in Mem. Soc. Geneve, XXXI 



(1890), 2, p. 169. 

 Phryganella PENARD Faune Rhiz. Leman (1902), p. 418. 



Test sub-globose, hemispherical or ovoid, most fre- 

 quently resembling that of Difflugia glolulus Ehrenb. 

 and liable to be mistaken for it ; incrusted with minute 

 diatom shells and a varying proportion of sand-grains, 

 or the latter exclusively ; the mouth inferior, round, 

 symmetrical. 



The genus was established by Penard in 1902 to 

 receive certain species which up to that time had been 



