134 REVISION OF GEOGLOSSUM. 



1960. Geoglossum glabxum.. P. — Ascl cyliudrico-clavate ; spo- 

 lidia cylindrical, straight or slightly curved, 7-septate, brown 

 (•085-"09 m.m. long) ; paraphyses filiform, thickened at the tips, 

 septate, the four ultimate cells oval, concatenate, mouiliform. 



1961. Geoglossum hirsutum. P. — Asci cylindrico-clavate ; spo- 

 ridia fasciculate, cylindrical, slightly curved, i5-septate, brown 

 (0"15 m.m. long) ; paraphyses septate, slightly incrassated at the 

 tips, curved, or circinate. 



1962. Geoglossum diffoxme. Fr. — Asci cylindrico-clavate ; spo- 

 ridia cylindrical, straight or slightly curved, 7 septate, brown. 

 (O'll m.m. long) ; paraphyses filiform, very long, septate, flexuous 

 and contorted at the tips. 



A species of Geoglossum allied to G. glutinosum occurs in the 

 United States, the sporidia of which are 15-septate. Another 

 hirsute species has at length been found in Australia (G. Walteri), 

 with sporidia shorter than in G. hirsutum, and 7-septate. A 

 singular variety of Geoglossum hirsutum occurs in the United 

 States which does not exceed an inch in height ; the clubs, and 

 indeed the whole plant, is nearly smooth, the bristles which spring 

 from the base of the hymenium are slender, and scarcely longer 

 than the paraphyses ; the paraphyses are the same as in G. hirsutum, 

 of which it is probably a variety. 



It is hoped that coloured figures, with analyses, will be published 

 shortly of all known species of Geoglossum, as part of an Atlas 

 of figures of Fungi, which will at first be chiefly devoted to the 

 Dif^comycetes. ' 



ATLAS DER DIATOMACE.E-KUNDE. 



By Adolph Schmidt. 



Archideaconus in Ascherleben. 



Since the publication of Ehrenberg's elaborate work (the 

 " Microgeologie") nothing has appeared to assist the modern 

 student in his labours, excepting papers published in various 

 scientific journals, many of them not now to be obtained. The 

 above-named work, judging from the first part, will be found a 

 valuable addition to the literature of the Diatomace^. 



The author is assisted by M.M. Griindler, Grunow, Janisch, 

 Weissflog, and Witt — names well known to the student of the 

 Diatomacese, names which the author considers will guarantee the 

 accuracy of the figures, of which over 9,000 have been drawn during 

 the past six years. These drawings were for themost part made to a 

 scale of 900 diameters, thus enabling the author to give a greater 

 amount of detail than when the magnification usually adopted, viz., 

 400 diameters, is employed. The drawings are afterwards reduced 



