264 Rhodora [ DECEMBER 
S. OPHIURA Lund., var. *rETRACERUM Wolle. Length 60 p: 
breadth with processes 108 w: without 24 u: isthmus 15 p. Pud- 
ding Pond, North Conway, frequent ! 
S. PARADOXUM Meyen. Breadth 45. Squam Lake! Saco Lake 
(Wood). 
S. PENTACLADUM Wolle. Length 38 m: breadth with processes 
47-52 p: without 13-25 4: isthmus 8-16 pw. Intervale! Noone’s 
Station ! 
*S. pulcherrimum sp. nov. (Plate 64, fig. 14). Length with 
spines roo p, without 8o 4: breadth with spines 78 p, without 46 p: 
isthmus 15.5 p. In front view semicells compressed spherical, in 
end view quadrangular with the sides tumid, each angle with two 
large spines confluent at the base, sides with four vertical rows of 
paired granules arranged in fours. Pudding Pond, North Conway 
(H. C. no. 131)! 
S. SALTANS Josh., var. FORCIPIGERUM Lagerh. (Plate 64, fig. 15.) 
Length without spines 65 p: breadth with processes 118 p: breadth 
at base 12.5 4: isthmus 7 4. Pudding Pond, North Conway, fre- 
quent ! 
S. sPONGIOSUM Bréb. Length with processes 65 m, without 53 p: 
breadth with processes 53 p: isthmus 15 4. Pudding Pond, North 
Conway (H. C. no. 129)! 
* Var. DEPAUPERATUM Racib. Length 41 4: breadth 28 p: isth- 
mus 8 y. Pudding Pond, North Conway (H. C. no. 129)! 
S. STRIOLATUM Nag. Breadth 34 m: isthmus ro q. North Wood- 
steck ! 
Forma BRASILIENSE Turner. Length 25 m: breadth 22 p: isth- 
mus 7 p. Laconia ( Wests, H. J. no. 676). 
S. SUBLAEVISPINUM Wests, Length 25 p: breadth 37 p: isthmus 
7 p. Laconia (Wests, H. J. no. 651)! 
SPHAEROZOSMA Corda. 
S. EXCAVATUM Ralfs, forma LAEVIS Rab. Length 12-12.5 p: 
breadth of filament 12 p: isthmus 4.5 4. Pudding Pond, North 
Conway, frequent! 
Forma GRANULATA Rab. (S. spinulosum Wolle,? '92). Length 
g-10 u: breadth of filament 9 4: isthmus 3.2 m. Pudding Pond, 
North Conway! Intervale! 
