78 Notice of a fossil Termes. 



In the last place, I am led to believe that this insect is 

 in a perfect state, and that it should form a new genus among 

 the Neuropterae Planipennae, particularly as the natural 

 history of these insects is yet little advanced, and is not 

 sufficiently elucidated by observations on them in their 

 native localities. 



On the development of the Spores of Anthoceros Icevis. By 



Hugo Mohl*. 



It is now some years since M. de Mirbel and I published 

 almost simultaneously some inquiries on the development 

 of Sporae. If as to the most important points our results 

 were the same, we differed notwithstanding on many others. 

 The circumstance of differing in opinion with an observer 

 of such eminence as M. de Mirbel, incited me strongly to 

 resume the same subject. For this purpose I made choice 

 of the Anthoceros lavis, which seemed to me best suited for 

 these investigations, because the mother-cellules contain a 

 much less number of granules than those of all the other 

 Crytogamae which I have examined ; and in which I hope to 

 follow more easily the formation of the membranes of the 

 Sporae. So much the more do I conceive it my duty to pub- 

 lish the result of my inquiries, as in many instances they will 

 confirm the theory of M. de Mirbel, and may also contribute 

 to dispel the difference of opinion which exists between this 

 most learned man and me. 



I shall commence by indicating in a few words the points 

 on which I entertained the same opinion as M. de Mirbel, 

 and those on which we differed. 



In his Memoire on the Marchantia, M. de Mirbel consi- 

 dered the Sporae of this plant, as well as those of Targionia 

 as simple cellules or utricules, and assures us that they 



* From the Annates des Sciences Naturelles, April 1840, communi- 

 cated to the Calcutta Journal Natural History, by Jos. M'Clelland, M. D. 



