50 ZYGOPHYCEÆ.
(ISSS), p. 501. Wood P. Water Algæ U.S. (1872), p. 118.
Notaris üesm. Ital. (1867), p. 59, t. 6, f. 60. R f f ;
E ut. (1868), p. 140. Wille Nov. Sem. (1879), p. 58.
m J . U.S. (1884), p. 91, t. 50, f. 85, t. 20, f. 3. Ku-oh. Alg.
Schles. (1878), p. 145.
Glosterium loeve, Kutz. Phyc. Germ (1845), p. 132
Penium (Tetmemorus) Brehissoaii, Kutz. Spec. Al^. (1 )i
^ Tetmemorus granulatus, Ealfs. Ann. Nat. Hist. (1844), xiv.,
t. 8, f. 2, d, e ,f, g.
H ab. In pools.
Sussex, Norfolk, Wales, Scotland"; France, Germany,
Enssian Lapland, Nova Zembla, Norway, Austria, Italy,
United States.
Plate X IX ., fig. 2. a a, c c ,living fronds; I d, empty fronds; e j ,
zygospores.
T e tm em o ru s p on io ido s. Permett Micr. Journ., Vol.'Vi. (1886), p.
13, i. 2 ,/. 26.
Frond about the size of T. granulatus, broad, linear-elliptic,
distinctly notched at each extremity, but without any li_p-hke
process. Margin continuous, with scarcely any constriction.
Cell wall smooth (not punctate or granulate).
S iz e . Length 190 p ; diam. 47 p (B.).
H ab. Amongst Sphagnum.
Lancashire.
Plate X IX ., fig. 9. Plate X X V I ., fig. 2. Living and empty fronds,
after Bennett.
Genus 13. S P ïR O T f f iN ïA . Breh. (1846).
Frond elongate, straight, cylindrical, or fusiform, entire, not
constricted at the middle, ends rounded or acute ; endochrome
spiral.
For details of frnotifioation see Archer in Micro. Journ. (1867), p. 186.
* Spiral
S p ir o t* n ia con d en sa ta . Breh. in Balfs. Besm. (1848), p . 179, t.
3 4 ,/. 1.
Frond cylindrical, five to ten times as long as broad, ends
rounded ; endoohrome a single broad, closely wound spiral
band, its revolutions numerous. Zygospore orbicular, areolate.
S iz e . Diam. 18-25 (W.) ; diam. 1 8 -2 5 /x (K.) ; length
180 /X ; diam. 25 p (D.).
Breb. Liste Desm. (1856), p. 157. Archer in Prit. Inf.
(1861), p. 751, t. 2, f. 4. Delponte Desm. (1878), t. 20, f. 26.
Notaris Desm. Ital. (1867), t. 9, f. 82. Nordstedt Desm. Arct.
(1875), p. 15. - Cleve Sver. Desm. (1864), p. 492. Lundell
Desm. Suec. (1871), p. 91. Nordstedt Norges Desm. (1873),
p. 47. Kirch. Alg. Sollies. (1878), p. 136. Petit Liste Desm.
Paris (1877), p. 29. Wood P. Water Alg® U.S. (1872), p.
122. Wittrock Scan. Desm. (1869), p. 19. Notaris Desm.
Ital. (1867), p. 71, t. 9, f. 82. Eabh. Alg. Eur. (1868), p.
146. Wille Nov. Sem. (1879), p. 58. Jacobsen Desm. Denm.
(1874), p. 181. Wolle Desm. U.S. (1884), p. 33, t. 3, f. 21-22.
H ab. In boggy pools.
Sussex, Kent, Gloucester, Westmoreland, Cornwall, Norfolk,
Wales, Scotland ; France, Germany, Sweden, Norway, Spitzbergen,
Nova Zembla, Denmark, Italy, United States.
Plate X IX ., fig . 3. a, living frond; 6, zygospore.
S p iro ts e u ia U u n c a t a . Archer Micr. Journ. (1862), n .,p . 253, t. 12,
/ . 28-31.
Frond minute, oylindrioal, five to eiglit times longer than
broad, tapering near the truncate ends ; endochrome a single,
rather closely wound, spiral band, leaving a minute clear space
at each end, often containing one or more free granules.
S iz e . Length 50 p ; diam. 7 p (A.).
Rabh. Alg. Eur. (1868), p. 147. Wille Nov. Sem. (1879),
p. 58. Jacobsen Desm. Denm. (1872), p. 181.
H ab. In small pools.
Ireland ; Denmark, Nova Zembla.
Plate X IX .,fig . 4. a h, living fronds; c, further magnified; d e,
zygospores.
S p i io t* n ia p a z v u la . Archer Micr. Journ. (1862), ii., p . 254 t 12,
/ . 32-43.
Frond very minute, five to eight times longer than broad,
slender, fusiform, ends subaoute ; endochrome obliquely
parietal, scarcely spiral.
S iz e . Length 8 0 /x ; diam. 8 m (L.) : length 1 7-35/x ;
diam. 8 i - 4 |/a (A.).
Lundell Desm. Suec. (1871), p. 91. Eabh. Alg. Eur.
(1868), p. 147.
H ab. In sphagnum pools.
Ireland, Sweden.
Plate X IX ., fig. 5. a, living fronds.
S p iro ta e n ia m in u t a . Thuret in Breh. Liste (1856), p. 157, t. \ , f . 30.
Frond fusiform, five or six times as long as broad, ends acute ;
endochrome a single, rather narrow spiral band, its revolutions
few.
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