32 Limiean Society. [April \Q, 



of the anus ; the single auricle of the heart ; the number of branchial 

 arches, and the internal position of the gills ; a long lateral nerve ; 

 acoustic labyrinth with large otolithes. These characters, with the 

 nasal sacs opening only externally, prove satisfactorily the Lepido- 

 siren to be a true Fish, and not a Perennibranchiate Reptile. 



In the class of fishes, Mr. Owen pointed out the interesting rela- 

 tions of the Lepidosircn as a link connecting the Cartilaginous fishes 

 with the Malacopterygians, and especially with the Sauroid genera, 

 Polypterus and Lepidosteus, and at the same time making the near- 

 est approach in the class of fishes to the Perennibranchiate Reptiles. 



For the species here described Mr. Owen proposed the name of 

 Lepidosiren annectens. It is a native of the river Gambia, Africa. 



April 16. 



The Lord Bishop of Norwich, President, in the Chair. 



Read, " Remarks on British Lichens and Fungi, principally on 

 species or varieties new to our Flora." By Churchill Babington, 

 Esq. 



The object of Mr. C. Babington in this paper is to give descrip- 

 tions of some species or varieties of Lichens and Fungi hitherto un- 

 published in any British Flora, and also to communicate observa- 

 tions on the transit of monstrosities to their proper forms. The 

 Lichens brought into notice as not yet introduced into the British 

 Flora are, Lecanora elatina, Ach., from Rose Hall, Cumberland; 

 Sterocaulon denudatum, Florke, (confounded with S. paschale) from 

 Scotland ; Lecidea nitidula. Fries, also from Scotland ; Lecidea mis- 

 cella, Ach., as distinct from L. miscella, Eng. Bot. ; Biatora Kro- 

 ckiana, Hoppe, from Isles of Rum and Skye ; Biatora anomala, Fr., 

 from Yoxall Lodge ; Opegrapha signata, Ach., from Herefordshire ; 

 and Verrucaria margacea, Wahl., from Charnwood Forest. Among 

 the Fungi are, Agaricus Maria, Klotsch ; A. serrulatus, Fr. ; The- 

 lophora ferruginea, Pers. ; T. lactea, Fr. : T. Icevis, Pers. ; Peziza 

 I,edi, Alb. and Schw. ; Stictis lichenicola, Mont. ; Sclerotium ro- 

 seum, KneifF. ; Sphceria scoriadea, Fr. ; -S. mesiota, Bab. ; S. rhy- 

 tismoides, Bab. ; S. arbuticola, Fr. ; S. alnea, Fr. ; S. ostruthii, Fr. ; 

 iS. Depazea, Fr. ; Depazea pyricola, Desm. ; Dothidea choetomium, 

 Kunze ; Stemonitis pulchella, Bab. ; Stilbum aurantiacum, Bab. ; Syzy- 

 gitis megalocarpus, Ehrenb. ; Stibospora macrosperma, Pers. ; Conio- 

 thecium amentaceum, Corda ; and Xenodochus carbonarius, Schl, 



