414 EHRENBERG: 
Meteorstaub vom 31. Januar 1848. 
Breslau. a = & 8 3 = 
ER a. a5s|2 = =) ir 
ne (Ele een 
Polygastrica: 16. a a a tz oe 
Arcella constricta | er 
Enchelys (hyalina) ala | + 
Desmogonium guyanense fragm. |\— | — | —- | —- | + 
Difflugia areolaia lH 
Discoplea a | — | > en 
Eunotia amphioxys Firi el + | riererg 
Fragilaria rhabdosoma? — |— |+ 
Gomphonema gracile -|-|1-|— | | (me 
Navicula Semen te eepee | | nee 
Pinnularia affinis — Dee |, — er 
borealis +|+|+ | +|— | ae 
viridis — 1er 
? (Amphora?) le ee | 
Synedra Entomon +/+|+|+ 
Ulna 1 — N le | 28? 
? (an S. Entomon) | |+ 
Phytolitharia: 44. 
Amphidiscus truncatus +|— | ||| — | Sr 
Lithasteriscus tuberculatus +|- |-|-| - | - | + 
Lithochaeta laevis | nl Eee 
Lithodontium Bursa — ern error 
curvalum — | — |+ 
excisum — 7 — 3 — ler 
furcatum ++ +++ |+| + | + 
nasulum +'+|i—-'—-|'+|—- ı + 
oblusum ae | je N] en Ben 
platyodon || — (Hier 
rostratum er el NE Eee 
Scorpius U BEZ ee ER 1 57 0 1 2 
Lithostylidium Amphiodon Sri | Eee ee 
angulatum IF | + Riesen 
