1905] Cushman, Desmid Flora of New Hampshire 265 
ONYCHONEMA Wallich. 
*O. NORDSTEDTIANA Turner. Length 12.5 p: breadth 12.5 p: 
isthmus 3.5 4: thickness 6.4 q. Filament twisted, from one face to 
the next face 24 cells, complete double turn 48 cells. Intervale! 
O. LAEVE Nordst., var. MICRACANTHUM Nordst. Length 14 p: 
breadth with processes 21 pu, without 16 p: isthmus 3.5 q. Inter- 
vale ! 
SPONDYLOSIUM Bréb. 
S. PULCHRUM (Bail) Arch., var. INFLaTUM (Wolle) W. € G. S. 
West. (Sphaerozosma pulchrum, var. inflatum Wolle '92). Length 
33 p: breadth of filament 65 p: isthmus ro p. Pudding Pond, 
North Conway (H. C. no. 138)! Laconia (Wests, H. J. no. 667) ! 
S. MONILIFORME Lund. (Sphaerozosma moniliforme Wolle '92). 
Length 34 4: breadth 17 q. Laconia ( Wests, H. J. no. 680) ! 
HYALOTHECA Ehrenb. 
H. DISSILIENS (Smith) Bréb. Length 22 p: breadth of filament 
25-28 m. Pudding Pond, North Conway ! North Woodstock ! 
* Var. MINOR Delp. Length 12-15 u: breadth of filament 18-22 p. 
Intervale ! 
DESMIDIUM Ag. 
D. APTOGONUM Bréb. Length r2 p: breadth of filament 21-34 y : 
isthmus 14 4. Pudding Pond, North Conway, frequent! Intervale ! 
D. BarLey1 (Ralfs) Nordst. Length 20-25 p: breadth of filament 
21-25 4. Pudding Pond, North Conway! Intervale! 
D. Swartz Ag. Length 12 p: breadth of filament 37-43 p. 
Pudding Pond, North Conway! Intervale ! 
* D. COARCTATUM Nordst. Length 28-40 p: breadth of filament, 
maximum 38—45 p, minimum 25-33 4. Pudding Pond, North Con- 
way, common ! 
D. QUADRATUM Nordst. Length 22 u: breadth of filament 36-40 
p. Intervale! Noone's Station! 
D. GRACILICEPS (Nordst. Lagerh. Pudding Pond, North Con- 
way ! 
D. cvLINDRICUM Grev. Maximum breadth 46 y, minimum 31 p. 
Pudding Pond, North Conway ! 
