EUROPA, ENGLAND. 
BIOLITHISCHE SÜSSWASSER-BILDUNGEN. LOCKERE ERDEN. 
EIESELGUHRE VON DOWN, MOURNE MOUNTAINS IRLAND. 
Vergl. Monatsberichte der Berliner Akademie der Wissenschaften 1842 S. 337 — 339. 
A. 
Erste Probe. 
A. Massen-Ansicht im Mikroskop bei 300 maliger Vergrösserung im Durchmesser. 
Fig. 1 
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43. 
Polyga stern: 
a. b. c. d. Gallionella procera 1842. 
= granulata 1842. 
= tenerrima 1842. 
* biseriata n. sp. 1842. 
a. b. c. d. = undulata? 1842. 
Campylodiscus hibernicus 1842. 
| Pinnularia Dactylus. 
= viridis (Navicula vir. 1842). 
= nobilis (Navic. nob. 1842). 
= leptogongyla. 
= gibba (Navic. gibba 1842). 
= Legumen (Navic. Leg. 1842). 
= ? Coccöneis n. sp. 1842. 
= amphioxys (Navic. 1842). 
= amphirrhina n. sp. 1842. 
- Placentula (Navic. 1842). 
= aequalis. 
= Gastrum. 
= birostris n. sp. 1842. 
* inaequalis (Navic. 1842). 
Stauroneis mesopachya (Navic. mes. 1842). 
= Phoenicenteron (Navic. Phoenic. 1842). 
j (Navic. angustata 1842). 
= Platalea (Navic. 1842). 
Navicula Agellus 1842. 
= ampliata n. sp. 1842. 
* dilatata 1 842. 
= punctulata 1842. 
»' ampliata? 
= Stylus n. sp. 1842. 
a. b. a Silicula 1842. 
= Bacillum (Nav. Bacillum et Nav. osculata 1842). 
= Amphigomphus. 
= Biceps. 
= ambigua (Nav. dicephala 1842). 
a.b. a Pktalea (Nav. Leptostylus 1842). 
Surirella robusta 1842. 
Fig. 44. Surirella splendida 1842. 
X }• 
l. a.b.J 
decora. 
Bifrons 1842. 
caledonica n. sp. 1842 (s. Massen-Ansicht). 
oblonga 1842. 
Lamella 1842. 
plicata n. sp. 1842. 
Craticula 1842. 
45. 
46. 
47. 
48. 
49. 
50 
51 
52. a.b. a 
53 1 
' I- Gocconeis lineata (Cocc. undulata 1842). 
55. = - striata 1842. 
56. = Scutellum 1842. 
57. a.b.c. Amphora libyca 1842. 
58. a.b. Eunotia Luna n. sp. 1842. 
59. a.b. c. = Argus (Eun. Textricula 1842). 
60. a Westermanni 1842. 
61. a granulata 1842. 
62. a Westermanni? 
63. = Zebra? 1842. 
64. a Monodon? 1842. 
65. Himantidium ArcUs 1842. 
LJ 
66. a. b. 
67 
68 
- b. 
69. 
70. a.b. 
71. 
*= gracile 1842. 
Eunotia zebrina 1842 
* depressa n. sp. 1842. 
= amphioxys 1842. 
= gibberula (Eun. gibba? 1842). 
= Diodon 1842. 
72. Himantidium Bidens. 
73. a.b.c. Tabellaria vulgaris ß trinodis (Tab. trin. 1842). 
74. * Biceps n. sp. 1842. 
75. = vulgaris a. 
76. = nodosa 1842. 
77. Fragilaria diopbthalma? 1842. 
78. a.b.) 
79. a.b. 
80. a.b. 
81. 
82, 
83. i 
84. 
a 
Rbabdosoma 1842. 
Synedra Ulna 1842. 
= acuta 1842. 
= capitata 1842. 
= spectabilis 1842. 
85. Gompbonema clavatum 1842. 
86. = anglicum n. sp. 1842. 
