M. E. P. Fries on the Geographical Distribution of Funyi. 269 4. Palaoniscus ? n. sp. A single example of what appears to be another species of Palaoniscus has occurred along with those described. It is about 3 inches long, a little more than half an inch in depth, and its head is -^-^ inch in length. It differs from the species noticed in having a more pointed head and a produced snout, also in the greater length of its dorsal, anal, and caudal fins. As it seems, however, to possess some points of resemblance to Pa-IcEoniscus angustus, Ag., of the Zechstein, I refrain from de-scribing it as new until I have compared it carefully with that species. Acrolepis Sedgwickii, Ag. Associated with the Palceonisci there has occurred a single fragment of Acrolepis, apparently belonging to the species A. Sedgwickii oHhe Marl-slate. This specimen is 7 inches long, and is minus head and part of tail, so that it has probably belonged to an individual that was little under 13 inches in length. Other fragments of this species have also been met with in the limestone above the bed containing the Palaonisci, but in a more imperfect state of preservation than the first. Besides these remains of fish, there have also been found in the two-feet bed first mentioned, and in the adjoining overlying and underlying strata, a few remains of plants. They are, unfor-tunately, very imperfectly preserved, and hence very difficult to determine. They are evidently, however, the remains of terres-trial vegetation ; at least, they possess character enough to show that they do not belong to the Algse. XXX. — Observations on the Geographical Distribution of Fungi. By M. E. P. Fries*. The Algaj and the Fungi properly so called are distinguished from other cellular plants by their larger size, their brighter colours, and by the greater variety of forms met with among them. These two orders of cellular plants have attracted the attention of observers from an early period, and were indeed the only Cryptogamia which at a remote period were applied to use; for it is only within a comparatively recent date that the Lichens have acquired a corresponding interest : on the other * Translated by Dr. J. T. Arlidge, from the ' Annales des Sciences Natu-relles,' 1861, 4 serie, tome xv. (Botanique), p. 10. The original memoir appeared in the ' Transactions of the Academy of Upsala ' for 1857, only a year before the premature death of the author ; the French translation is by Dr. W, Nylander.
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