7G0 
A. ELEGANS. (Greg.) Hunstanton and Wells Sands. 
A. LEPiDoPTERA. (Greg.) Hunstanton and Wells Sands. 
A. MARINA. (Grun.) Burgh St. Peter. 
A. MAXIMA. (Greg.) Hunstanton and Wells. 
A. PALUDOSA. Sm, Breydon. 
Genus Pleurosigma Smith. 
P. aestuarii. Sm. Hunstanton Sands. 
P. affine. (Grun.) Breydon. 
P. ANGULATUM. Sm. Breydon, Burgh St. Peter, Mouth of the 
Bure, Wells. 
P. ATTENUATUM. Sm. Wliissonsett ; abundant in a ditch running 
into Ormesby Broad. ° 
P. Balticuji. Sm. Breydon Ditches. 
P. ELONGATUM. Sm. Breydoii, Wells. 
P. FASCIOLA. Sm. IMoutli of the Bure, Breydon. 
P. HIPPOCAMPUS. Sm. In most brackish-water localities. 
P. INTERMEDIUM. Lynn. 
I. LACUSTRE. Sm. Wliissonsett, Poringland, Ormesby. 
P. MARINUM. (Donk.) Wells, Hunstanton. 
P. Hormanii. (Kalfs.) Stomachs of Noctilucai, Yarmouth. 
P. QUADRATUM. Sill. Bi'cydoii, Wclls, Braiicastei’. 
P. Spenceri. Sm. Wliissonsett, Ormesby. 
P. STRIGILIS. Sm. Ptunham, plentiful; rare in brackish water, 
Breydon, 
P. STRIGOSUM. Sm. Yarmouth, Wells, Breydon, Hunstanton. 
P. TRANSVERSALB. Sill. Stoiiiaclis of HoctiluciB, Yarmouth. 
Genus Toxonidea Donkin. 
T, Gregoriana. Donk. ) Frequent in sand-washing, 
T. iNsiGNis. Donk. J Hunstanton, Wells. 
Family III.— GOMPHOHEME/E. 
Genus Piiioikosphenia Grunow. 
L. CURVATA. (Sm.) Yarmouth, plentiful ; not uncommon in 
fresh-water ditches. 
