92 Brown : Rhizopods fvom the Sheffield District. 



Brit. Freshwater Rhizop. 1905). A small form occurring 

 amongst moss. Rare. 



7. — Corycia fiava (Greeff). (' Arch. f. mikr. Anat.' Bd. II., 

 1866). Several very small (young) forms amongst moss. 

 Size 25/x. 



8. — Difflugia lanceolata Penarcl (' Mem. Soc, phys. et hist. 

 nat. Geneve,' 1890 ; ' Faune rhizo]),' p. 250). In numbers in 

 sediment of a pool, Whiteley Woods. 



9. — Diffliigia nihescens Penard (' American Nat,' 1891 ; 

 ' Faune rhizop.' p. 227). A small form, almost pyriform in 

 shape, with endoplasm containing many brick-red granules. 

 Not common. Sediment Burbage. Size 6o/z. 



10. — Difflugia fallax Penard (' Mem. Soc. etc.,' 1890 ; 

 ' Faune rhizop.' p. 245). Another small form met with 

 amongst submerged moss. Size 59 //. 



II. — Pontigiilasia spectabilis Penard. (' Faune rhizop.' 

 p. 318). Occurs in sediment Burbage. Appears to be the 

 same as Difflugia pyriformis var. vas of Leidy, but is dis- 

 tinguished from Difflugia by the presence of an internal shelf- 

 across the 'neck ' of the test. 



12. -r-Hyalosphenia papilio Leidy (' Freshwater Rhizopods 

 N. America '). Occurs in sphagnum, and as far as I have 

 observed is very rare in this district. It has only been reported 

 once or twice in this country. I have also found it as a rare 

 .form in the Lake District. 



13. — Nebela lageniformis Penard (' Mem. Soc.', etc., 1890, 

 p. 158 ; ' Faune rhizop.', p. 355). An elegant flask-shaped 

 species with long neck. The examples I ha\-e found are much 

 smaller than those of Penard, being 66 /v., and probabh' 

 represent a distinct variety. Fairly common in sphagnum at 

 Stanage, etc. 



14. — Nebela militaris Penard (' Mem. Soc.', etc., 1890 : 

 ' Faune rhizop.' p. 368). A fairly common and widely distri- 

 buted species. In sphagnum, Stanage, etc. Size 70 {j.. 



15, — Nebela crenulata Penard ( = A''. dentistoma, Penard, in 

 ' Mem. Soc.', etc., 1890, p. 162 ; ' Faune rhizop.' p. 370 ;. 

 ' Cash. Trans. Manch. Micro. Soc.', 1891, p. 50). Differs from 

 other Nebelas in having a crenulated ' mouth ' to the test. 

 Fairly common in sphagnum, Stanage, also in a stream enter- 

 ing the Quaker Fish Pond, Monsal Dale. 



16. — Nebela bohemica Taranek (' Monogr. der Nebeliden 

 Bohmens,' 1882, p. 34). Related to N. collaris, but differs in 



Naturalist, 



