REV. E. N. BLOOMFIELD ON THE ALG.E OF SUFFOLK. 779 
COSCI NODISCUS RADIATUS, Var. CONCINNUS, W. Sill. Ipswich 
Actinoptychus undulatus, Ehr. Ipswich, frequent. 
Auliscus sculptus, Ralfs. Ipswich. 
Eupodiscus Argus, Ehr. Ipswich. 
Actinocyclus crassus, Van Heurck. Ipswich. 
Biddulphia aurita, Breb. Ipswich. 
,, pulchella, Gray. Ipswich and Walton. 
» rhombus, W. Sm. Ipswich. 
„ Smithii, Van Heurck. Ipswich. 
„ pavus, Van Heurek. Ipswich. 
Synedra affinis, Kiitz. Walton. 
,, FULGENS, W. Sm. Ipswich. 
,, superba, Kiitz. Ipswich. 
Achnanthes longipes, Ag. Common. 
,, brevtpes, Ag, Common. 
Schizonema EXIMIUM, Thur. Walton and Ipswich. 
,, CRUCIGERUM, Lowestoft and Ipswich. 
,, Grevillii, Ag. Common. 
Cocconeis scutellum, Ehr. Common. 
,, diaphana, W. S111. Common. 
Navicula Smithii, Ag. Ipswich, rare. 
,, didyma, Ehren. Common. 
,, marina, Ralfs. Common. 
,, Hennedyi, W. Sm., var clavata. \'an Heurck. 
Ipswich. 
,, lyra, Ehren. Walton. 
„ di recta, W. Sm. Lake Lothing, Ipswich. 
„ aspera, Ehren. Ipswich. 
Scoi.iopleura Westii, Griin. Ipswich, Walton, &c. 
,, latestriata, Griin. Ipswich, Walton, &c. 
,, tumida, Rabenh. Ipswich, Walton, &c. 
Stauroneis sauna, W. Sm. Ipswich. 
Pi.eurosigma formosum, W. Sm. Walton, Ipswich, &c. 
,, decorum. W. Sm. Walton. Felixstowe, Ipswich. 
,, speciosum, W. Sm. Walton. 
,, rigidum, W. Sm. Ipswich. 
„ elongatum, W. Sm. Frequent. 
strigosum, W. Sm. Frequent. 
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