124 YORKSHIRE NATURALISTS* UNION. 



5S9. Tetraedron enorme (Ralfs, 1848) Hansg., 1888. 



[S)-n. Staurastnim euornie Ralfs, 1848; Polycdrium 



eiwriiie (Ralfs) De Bary]. 

 N.W.— INlickle Fell. 

 N.E. — Pilmoor, near Thiisk. 

 S. E. — Skipwith Common. 



590. Tetraedron gigas (Witir., 1872), Hansg., 1888. 



[Syn. Polyedrium gigas Wittr., 1872]. 

 N.W.— Birkdale Tarn Moss. 



591. Tetraedron lobulatum (Niig., 1849), Hansg., 

 1888. [Syn. Polyedrhiin lobulalum Nag., 1849]. 



N.E. — Gormire (W. B. Turner). 



592. Tetraedron minimum (A. Br., 1868), Hansg,, 



1888. [Syn. Polyedrium ininiviuin A. Br., 1868; 



P. Pin uidii/m Reinscb., 1867]. 

 Mid W.— Old Cote Moor. Roundhay Park, Leeds. 

 N. E. — Pilmoor, near Thirsk. 

 S.E.— Market Weighton. 



593. Tetraedron trigonum (Niig., 1849], Hansg., 1888. 



[Syn. Polyedrium trigoiium Nag., 1849 J. 

 N.E. — Pilmoor, near 'i'hirsk. 



594. Tetraedron tetragonum (Niig., 1849), Hansg., 



1888. [Syn. Polyedrium letragoiium Niig., 1849]. 



S.W. — Frizinghall. 

 N.E. — Pilmoor, near Thirsk. Rievaulx Abbey. 



595. Tetraedron octaedricum(Reinsch., 1867), Hansg. 



1888. \^yn. Poly edriu/u odaedricuin Reinsch., 1867]. 

 Mid W.— Cam Fell. 

 N.W. — Bog near Widdale Beck. 

 S.E. — Riccall Common. 



This species has not previously been recorded for the British 

 Isles. 



596. Tetraedron caudatum (Corda), Hansg., 1888. 



[Syn. Polyedrium pcntagonum Reinsch]. 



Tr.-ins. Y.N. If., rfoo (piili. July rooi). Hot. Scrict., Vol. 5. 



