1907] Terry,— Partial List of Connecticut Diatoms 135 
Pleurosigma subsalinum Per. Rare, Leete's Island, Milford. 
Gyrosigma *Temperii Cleve. Occasional. 
Scoliopleura latestriata (Bréb.) Grun. Frequent. 
3 *var. Amphora Cleve. Rare, Morris Creek. 
m tumida (Bréb.) Rab. Frequent. 
Frustulia rhomboides (Ehrenb.) De Toni. (Navicula rhomboides 
Ehrenb. Frequent. 
* P var. saxonica (Rab.) De Toni. (Navicula 
crassinervia Bréb.) | Occasional. 
Lewisiana (Grev.) De Toni. (Navicula Lewisiana Grev.) 
Rare, Bridgeport only. 
"^ viridula (Bréb.) De Toni. (Schizonema viridulum Rab.) 
Rare. 
Dickiea crucigera (W. Sm.) De Toni. (Schizonema crucigerum W. 
Sm.) Rare, Quinnipiac. 
Brebissonia Boeckii (Kütz.)Grun. (Navicula Boeckii Bréb.) Occa- 
sional; abundant in Thames River. 
Mastogloia *gibbosa Brun. Occasional. 
undulata Grun. Occasional.’ 
Amphiprora lepidoptera Greg. Frequent. 
var. pusilla (Greg.) VH. Frequent. 
maxima Greg. Locally abundant. 
" alata Kütz. Frequent. 
pulchra Bail. Locally abundant. 
conspicua Grev. Frequent. 
ornata Bail. Frequent. 
Plagiotropis vitrea. (W. Sm.) Grun. (Amphiprora vitrea W. Sm.) 
Frequent. 
Tropidoneis *seriata Cleve. Occasional. 
a *zebra Cleve. Occasional. 
C ymbella Ehrenbergii Kütz. Locally abundant. 
cuspidata Kütz. Frequent. 
" — affinis Kütz. Local, New Britain. 
heteropleura (Ehrenb.) Kütz. Local. 
gastroides Kütz. Common everywhere. 
cymbiformis var. parva (W. Sm.)VH. Local, New Britain. 
americana A. Schm. Locally abundant. 
cistula var. maculata (Kütz.) Grun. Local, New Britain. 
Encyonema caespitosum Kütz. Frequent. 
g prostratum (Bail.) Ralfs. Frequent. 
Amphora levis Greg. Frequent. 
cingulata Cleve. Frequent. 
" erebi Ehrenb. (A. cymbifera Greg.) Frequent. 
" Clevei A. Schm. Frequent. 
intersecta A. Schm. Frequent. 
Eulensteinii Grun. Frequent; locally abundant at Milford. 
proteus Greg. Frequent. 
