i f
1. Epithemia Hyndmanii, W. Sm. F. V. inflated; V. much and
regularly arched, extremities rounded, not recurved ; striæ moniliform,
16 in -001" ; canaliculi inconspicuous, 9 in '001". Length
of F. -0025" to -0076". v.s.
W. Sm. Ann. 2nd Ser. vol. v. p. 124.
Fresh water. Lough Mourne Deposit, Cantyre Peat,
Plate I. 1.
2. Epithemia turgida, TV. Sm. F. V. somewhat inflated ; V. slightly
arched, extremities suddenly attenuate, ohtuse ; striæ moniliform,
21 in '001"; canaliculi distinct, 12 in ’001". Length ‘0026" to
•0062". v.v.
Kpitliemia Vertagus, Kiitz. Bacili, xxx. 5. sic. cl. De Brebisson in litt. cum
specim.
Eunotia turgida, Ehr. Inf. tab. xiv. 5. xxi. 20 a. Qiiek. II. C. xii. 5. < In
Conjugation, Thw. Ann. vol. xx. pi. iv. Prit. Anim. xiv. 1-8.
Cymbella turgida, Hass. Alg. pi. c. 7.
Fresh water. Near Aberdeen, Dr. Dickie. Wareham, Lewes, May 1850,
&e., W. Sm. Lough Mourne Deposit, Dolgelly Earth, Cantyre Peat and
Peterhead Deposit.
Plate I. 2. Frustule ivith endochrome. Frontispiece, vol. i. fig. II.
3. Epithemia granulata, Kiitz. F. V. linear; V. slightly arched,
linear, otherwise like the last. Length -0033" to '0081". v.s.
Kiitz. Bacili, v. 20. Eunotia granulata, Ehr. Inf. xxi. 20 |S.
Fresh water. Lough Mourne Deposit.
Plate I. 3.
4. Epithemia Zebra, Kiitz. V. equally arched; F.V. linear; extremities
ofV. gradually attenuate; striæ punctate, 33 in -001";
canaliculi few-, 8 in ’OOl". Length -0016" to '0035". v.v.
Kiitz. Bacili, v. 12. Eunotia Zebra, Ehr. Inf. xxi. 19. Cymbella Zebra,
Hass. Alg. c. 8.
Fresh water. "Wareham, Lewes, &c,, Aug. 1850, W. Sm.
Plate I. 4.
5. Epithemia Argus, W. Sm. F. resembling the last; foramina
conspicuous on the F. "V". Length ‘0013" t o '0021". v.v.
Epithemia alpestris, Kiitz. Sp. Alg. p. 2. ad spec, authent. quæ misit cl. De
Brebisson, Jan. 1853. Prit. Anim. xxiv. 11.
Fresh water. Near Aberdeen, Dr. Dickie.
Plate 1.5.
6. Epithemia ocellata, Kiitz. F. V. inflated, extremities of V.
rounded, foramina large, v.s.
Ki'itz. Baclll. xxix. 57.
Fresh water. Wray near Lancaster, Mr. G. Smith. Cantyre Peat.
Plate I. 6.
7. Epithemia longicomis, Ehr. F. V. inflated, extremities obtuse ;
dorsal ridge ofV. somewhat angular; foramina few, large; striæ
27 in -001". Length -0033" to -0058". v.v.
Ehr. in Prit. Anim. xxiv. 6-9.
Fresh water. Isle of Arran, mixed with Petalonema alatum, Berk, collected
by Professor Walker Arnott, Aug. 1852.
Supp. Plate XXX. 247.
8. Epithemia alpestris, W. Sm. F. V. linear; V. recurved at the
obtuse extremities ; foramina large ; striæ 27 m -001". v.s.
Kiitz. Bacill. V. 16 ?
Fresh water. Katefield near Lancaster, Mr. G. Smith, April 18ol.
Plate I. 7.
9. Epithemia proboscidea, Kütz. F. V. inflated; V. recurved at
the extremities; canaliculi large ; foramina inconspicuous; striæ
30 in -001". v.v.
Kiitz. Bacill. V. 13.
Fresh or brackish water. St. Ouen’s Pond, Jersey, Aug. 1852, W. Sm.
Eaasay Earth.
Plate I. 8.
10. Epithemia Sorex, Kütz. F. V. inflated; V. attenuate, slightly
recurved at the extremities, dorsal line highly arcuate ; canaliculi
few, minute ; striæ 33 in -001". Length -0009" to 'OOIS". v.v.
Kiitz. Bacill. V. 12.
Fresh or brackish water. Lewes, May 1850, W. Sm. Lough Mourne
Deposit, Cantyre Peat, &c. (New Zealand.)
Plate I. 9. Frustule with endochrome. Frontispiece, vol. 1. fig. IX.