OF THE -RVSOTIEJE. 



761 



stripe scarcely converg-ing, 7 or 8 in 

 1-1200". KB. p. 28, t. 30. f. 4. = JSu- 

 notia Westennanni, E Inf. p. 190, & M, 

 many figures. Europe, Asia, and Ame- 

 rica, (iv. 2 ; IX. 157.) In Ehrenberg's 

 figures the frustules are large, the stout 

 valves have the obtuse apices somewhat 

 produced and recurved, and the inter- 

 stices of the costse furnished with dotted 

 lines. 



E. (jihherula (E.). — Front view elliptic, 

 with slightly produced apices; valves | 

 with gibbous dorsum, slightly concave ' 

 venter^ and attenuated, recurved apices ; 

 striae converging, 83 in -001". =I^unotia \ 

 gihhei'ula, EA. p. 125, & M, nimierous \ 

 figures. = E. Sorex, KSA. p. 1 ; SBI). I 

 vol. i. p. 18, pi. 1. f. 9. Fresh or brackish ; 

 water. Common. Europe, Asia, Aus- j 

 tralia, Africa, and America. Costae in- , 

 conspicuous. j 



E. Saxonica (K.)- — Minute ; fi'ont view | 

 rectangular ; valves Innately cm'ved, at- | 

 tenuated, with obtuse not recm'ved ends ; 

 striae sn]3Converging, 6 to 7 in 1-1200". ; 

 KB. p. 35, t. 5. f. 15. Italy and Ger- ; 

 many. 1-840". " | 



E. Textricula (E., K.). — Valve linear, | 

 limately cm-^'ed, with roimded ends ; 

 costae stout, distant ; interspaces with 

 series of longitudinal striae. KB. p. 85, 

 t. 29, f. 53. = Eunotia Textricula, EA. 

 p. 126, & M, several figures. Ern'ope, 

 Asia, Australia, Africa, and America. 

 Small ; ends not recmTed. 



E. Zebra (E., K.). — Front view sub- 

 linear; vahes semilunate, with convex 

 dorsum, straiglit venter, and very obtuse, 

 slightly prominent apices; costae con- 

 vergent, 5 to 7 in -001". KB. p. 34, 

 t. 30. f. 5 ; SBD. pi. 1. f. 4. = Eunotia 

 Zebra, E. Em'ope, Asia, Africa, and 

 America. Striae 33 in -001". S. 



E. zehrina (E., K.). — Elongated ; valves 

 with evenly convex dorsimi, gi-adually 

 decun-ent into the obtuse, constricted 

 apices; interspaces dotted. KB. p. 34. 

 = Eunotia zehrina, EA. p. 126, & M, 

 several figm-es. Asia, Australia, Ame- 

 rica, and Europe. 



E.^Mr</<V/rt(E.,K.). — Large ; front view 

 linear or slightly dilated at the middle ; 

 valves curved, mth the slightly convex 

 dorsum gTadually attenuated to the trun- 

 cate apices, which are neither prominent 

 nor recurved ; striae diverging, 8 or 9 in 

 1-1200". KB. p. 34, t. 5. f. l-i. = Eunotia 

 turgida, E Inf. t. 14. f. 5. Em'ope, Asia, 

 and America, (iv. 1 ; ix. 159-161.) 



E. f/ranulata (E., K.). — I^arge ; front 

 view linear or linear-oblong ; valves 

 slender, slightly arcuate, with obtuse. 



recurved apices; striae moniliform ; costae 

 distinct. KB. p. 35, t. 5. f. 20. E. Faba, 

 KB. p. 36, t. 5. f. 21. = Eunotia c/rami- 

 lata, E Inf. p. 191, t. 21. f. 20 = E2?itlw- 

 mia turgida, SBD. vol. i. pi. 1. f. 2. Eu- 

 rope, Asia, Africa, and America. 



E. Vertagus (K.). — Large ; front view 

 sublinear, gradually dilated at the mid- 

 dle; valves slender, arcuate, with roimded, 

 reflexed apices ; costae converging, 10 in 

 1-1200" ; strife punctate. KB. p. 36, 

 t. 30. 12 = E. granulata, SBD. vol. i. 

 t. 1. f. 3. Fresh water. Europe. Re- 

 sembles the last, but the valves are far 

 more slender. 



E. Lihrile (E,, K.).— Large ; fi'ont view 

 rectangular ; valves arcuate, with con- 

 cave venter, dorsum evenly convex at 

 the middle, suddenly decreasing towards 

 the obtuse, slightly revolute apices ; in- 

 terspaces between the costae dotted. 

 KB. p. 35, t. 29. f. 45. = Eunotia Lihrile, 

 E Amer. p. 126, t. 3. 1. f. 38. Asia, 

 Africa, and America, (xn. 24, 25.) 



E. Porcellus (K.). — Large ; front view 

 linear, seven times as long as broad ; 

 valves with convex dorsimi, concave 

 venter, and truncate reflexed ends ; 

 striae converging, 11 in 1-1200". KB. 

 p. 34, t. 5. f. 18, 19. Fossil. San Fiore. 

 (xm. 12.) 1-240" to 1-216". 



E. proboscidea (K.). — Small ; front 

 view rectangular with obtuse angles ; 

 valves with gibbous dorsum, slightly 

 concave venter, and constricted, obtuse, 

 remarkably recm^ed ends ; costae con- 

 spicuous, converging. KB. p. 35, t. 5. 

 f. 13 ; SBD. vol. i. p. 13, pi. 1. f. 8 ? 

 Fossil, Llineburg ; Britain ; recent, Jer- 

 sey. Costae 5 or 6 in 1-1200". British 

 specimens have the front view inflated, 

 and therefore may be distinct. 



E. P marina (Donkin). — Dorsal view 

 rectangidar, with longitudinal series of 

 pimcta on the connecting zone; valves 

 linear, slightly arcuate, with produced 

 rosti-ate apices; costae conspicuous; in- 

 terspaces punctated. Donkin, TMS. 

 vol. \^. p. 29, pi. 3. f. 14. Marine. Eng- 

 land. A large and beautiful Diatom, 

 whose genus is somewhat imcertain. It 

 agrees with Amphora in having the lon- 

 gitudinal rows of puncta confined to the 

 dorsal sm-face, whilst in the form of its 

 valves it resembles some species of 

 Nitzschia. Costae and striae 11 in -001". 

 Donkin. 



Doubtful and insufficiently knoum species. 



E. Electra = Eunotia Electra, EM. 



pi. 37. 3. f. 3. Fossil. Prussia. Valve 



semi orbicular, with strong, radiant striae. 



