lo6 YORKSHIRE naturalists' UNION. 



499- — Staurastrum paradoxum Meyen. 

 Mid W. — Blubberhouses (W. B. Turner). Bride Cross, above 

 Farnley Moor. Ribblehead. 



N.E.— Strensall ! (\V. B. Turner). 

 S.E. — Riccall Common. 



Var. longipes Nordst. 

 N.E.— Strensall. 



500. Staurastrum oxyacanthum Arch. 1859. [Syn. 



61 scorpioideuin Delp. 1877 var. brevis Gutw. 1890.] 

 Mid AV. — Cocket Moss, near Giggleswick. 

 S.E. — Riccall Common. 



501. Staurastrum controversum Bre'b. 

 Mid \\. — Bog two miles south of Clapham. 

 N.E. — Pilmoor, near Thirsk. 



S.E. — Riccall Common. 



502. Staurastrum aculeatum (Ehrenb.) Menegh. 

 N.E. —Strensall (W. B. Turner). 



503. Staurastrum vestitum Ralfs. 

 S.E. — Riccall Common. 



504. Staurastrum Pseudosebaldi Wille. 

 N.E.— Pilmoor, near Thirsk (vi. 1898). 



505. Staurastrum Sebaldi Reinsch. 

 Mid W. — Malham Tarn. 



N.E.— Gormire; Strensall! (\V. B. Turner). Pilmoor, near 

 Thirsk. 



Var. ornatum Nordst. 

 N.E. — Pilmoor, near Thirsk. 



506. Staurastrum Borgeanum Schmidle. 

 N.^V.— Bog near W'iddale Beck. 



This species was described and figured by Schmidle in Bihang 

 till K. Sv. Vet.-Akad. Hand). 1898, Bd. 24, afd. iii., no. 8, p. 60, 

 t. iii., f. 7. His figure is, however, a very poor representation of 

 the species. It was only known previously from Lappmark. 



Length, 45 f>.; breadth, 43-48 ]>■; breadth of isthmus, 12 /*. 



Trail,, V.N.U., 1899 ((jub. July 1901). Dot. Series, Vol. 5. . 



