1905] Cushman,— Desmid Flora of New Hampshire 113 
M. ENDLICHERIANUM Nig. Length 25 4: breadth 8 y. Inter- 
vale, frequent ! 
CYLINDROCYSTIS Menegh. 
C. BnEBIssONH Menegh. (Penium Brebissont, Wolle 'g2). Var. 
MINOR W. & G. S. West. New to U. S. (Herbarium of Jos. A. 
Cushman, no. 112.) Length 28 mw: breadth 13 q.  Intervale, 
frequent ! 
C. crassa DeBary. (Penium crassa, Wolle ’92.) Length 40 p: 
breadth 20 y. Mt. Moosilauke, abundant ! 
C. DIPLOSPORA Lund.  (Calocylindricus diplospora, Wolle ’g2.) 
Length 48-61 u: breadth 27-32 mw: isthmus 23-28 pu. Intervale, 
frequent ! 
*C. AMERICANUM W. & G. S. West. Var. minor var. nov. 
While specimens from Colorado agreed almost exactly with the types 
from New York, these specimens from New Hampshire and those 
from Newfoundland were considerably smaller and the variation 
seems to be constant. Length 34-40 mw: breadth 16-18 p. "Mt. 
Moosilauke!  (H. C. no. 80.) 
NETRIUM Nág. 
N. Dicirus (Ehrenb.) Itzigs. & Rothe. (Penium Digitus and 
Penium lamellosum, Wolle '92.) Length 200-280 p: breadth 62- 
78 p. Pudding Pond, North Conway! Intervale! Mt. Moosi- 
lauke, abundant! Saco Lake (Wood). 
N. OBLONGUM (DeBary) Lütkem. (/enium oblongum, Wolle ’92.) 
Length 96 p: breadth 29 y. Intervale ! 
* Var. CYLINDRICUM W. & G. S. West. Newto U.S. (H.C. no. 
78.) Length 60-71 u: breadth 18-20 u. Mt. Moosilauke, abundant ! 
* Forma major (Turner) forma nov. Length 168 mw: breadth 
44 p. Pudding Pond, North Conway, frequent ! 
N. INTERRUPTUM (Bréb.) Lütkem. (/enium interruptum, Wolle 
'92.) Length 172-320 u: breadth 38-40 4. Intervale, scarce! 
PENIUM Bréb. 
P. LiBELLULA (Focke) Nordst. (2. closterivides, Wolle *92.) 
Length 233-320 p: breadth 38-50 m. Intervale, scarce! Pudding 
Pond, North Conway, common! North Woodstock, common ! 
