778 REV. E. N. BLOOMFIELD ON THE A LG .E OF SUFFOLK. 
Epithemia ventricosa, Kiitz. Frequent. 
Bacillaria paradoxa, Gmel. Common. 
Nitzschia sigmoidea. W. Sm. Common. 
,, linearis, W. Sm. Common. 
,, Sigma, W. Sm. Frequent. 
,, spectabilis, Ralfs. Near Ipswich. 
,, Amphioxys, W. Sm. Common. 
,, vivax, W. Sm. Bury. 
,, bilobata, W. Sm. Ipswich. 
,, plana, W. .Sm. Common. 
,, acicularis, Sm. Bury, &c. 
,, gracilis, Raben. Frequent, Bury, Felixstowe, 
Ipswich, &c. 
,, lanceolata, W. Sm. Walton Ferry. 
,, constricta, Pritch. Ipswich, frequent. 
Cymatopleura Solea, W. Sm. Frequent. 
,, ,, var. apiculata, Pritch. Frequent. 
,, elliptica, W. Sm. Frequent. 
Surirella biseriata, Breb. Bury, Ipswich, &c. 
,, linearis, W. Sm. Bury. 
„ gracilis, Grim. Bury, Walton, Ipswich, &c. 
,, striatula, Turp. Frequent. 
,, Brightwelli, W. Sm. Frequent. 
,, minuta, Breb. Common. 
,, ovata, Kiitz. Common. 
„ ,, var. salina, W. Sm. Common. 
Campylodiscus noricus, Ehren., var. costatus, W. Sm. 
Mermaid’s Pits, Bury. 
,, Echeneis. Ehren. Woodbridge. 
The following are Marine Diatoms : — 
Podosira hormoides, Kiitz. Ipswich. 
,, maculata, Sm. Ipswich. 
Melosira nummuloides, Ag. Ipswich. 
,, sulcata, Kiitz. Ipswich, &c. Common. 
Hyalodiscus stelliger, Bail. Ipswich, &c. Abundant. 
Coscinodiscus excentricus, Ehr. Ipswich, Walton, &c. 
„ radiatus, Ehr. Ipswich, Walton, &c. 
