7G6 
N. SPECTABiLis. (Ehr. nec Sm.) Horning. 
H. SUBSALINA FORMA CAPITELLATA. Grim. Brej’doil. 
H, Trybliokella. (Hantzsch.) Breydon ditches, frequent; 
Hunstanton, Wells, Yarmouth. 
Genus Hantzsciiia Grunow. 
H. AMPHIOXYS. (Sin.) Common in Moss from Osier Car, 
Heigham. Bare in soil attached to the roots of Equisetwn, 
growing on the hanks of Wensurn, Hellesdon. 
H. AMPHIOXYS var. vivax. (Sm.) Sand- washings, Hunstanton, 
Wells, Brancaster. 
II. MARINA. (Donk.) Same localities as the above species. 
H. viRGATA. (Roper.) As above. 
Genus Surirella Turpin. 
S. APICULATA. (Sm.) St. Eaith’s Common. 
S. biseriata. (Breb.) Hickling, Whissonsett, Tittleshall. 
S. Brightwellii. (Sm.) Abundant in a gathering made by the 
late Thos. Brightwell, Esq,, at Titclnvell, but rare in other 
localities. 
S. constricta. (Sm.) In a ditch near Breydon, very rare. 
S. GEMMA. (Ehr.) Abundant in a gathering from the North 
River, Yarmouth, more or less frequent in all brackish- 
water localities. 
S. linearis. (Sm.) Hickling, Costessey, Tittleshall : not common. 
S. LINEARIS var. AMPHIOXYS. A. Schmidt. Horning' 
O 
S. Molleriana. (A. Schmidt.) Breydon marshes. 
S. OVALIS. (Breb.) Breydon, Burgh, Titchwell : rare. 
S. OVATA. (Kg.) Frequent in slightly brackish or fresh-water 
ditches ; abundant in a ditch at Lynn, Keswick. 
S. SALINA. (Sm.) Breydon. 
S. SPIRALIS. (Kg.) Tittleshall . so far as I know the only Norfolk 
habitat. 
S. SPLENDID A. (Kg.) Hickling, Costessey, Tittleshall — rare. 
S. STRIATULA. (Turp.) Abundant and fine in the ditches at 
Breydon. 
S. SUBSALSA, (Sm.) Breydon : very rare. (I have compared the 
Norfolk form with Professor Smith’s specimens, and find 
they are identical. The figure in his Synopsis is not correct.) 
