310 Linncean Society. 



dia, and named Embia Saundersli, after its discoverer William Wil- 

 son Saunders, Esq., F.L.S. The following are the characters of this 

 new species : 



E. Lutescenti-fuscescens, incisuris abdominalibus dilutioribus, alis pal- 

 lida fuscescentibus, vittis 5 angustissimis albis inter nervos longitudi- 

 nales positis. 



Long. corp. lin. 3| ; expans. alar. lin. 5^. 



The other two species are E. Savignii, figured by Savigny in the 

 great French work on Egypt (Neuroptera, pi. 2. f. 9), and E. Bra- 

 sdiensis, the Olyntha Brasiliensis of Mr. G. R. Gray in Griffith's trans- 

 lation of Cuvier's Animal Kingdom. The author regards these spe- 

 cies as constituting the types of three subgenera, distinguished by 

 the number of joints in the antennae, and the disposition and rami- 

 fication of the nervures in the wings. 



March 18. — The following communications were read: 



Additional remarks on the Tropceolum pentaphyllum of Lamarck, 

 by Mr. David Don, Libr. L.S. 



This paper is a supplement to Mr. Don's account of the plant 

 forming the subject of his remarks, which was read before the So- 

 ciety on December the 18th 1832, and was noticed in the Lond. and 

 Edinb. Phil. Mag. vol. ii. p. 67. In that paper he showed that this 

 plant ought to be regarded as the type of a new genus, for which he 

 proposed the name of Chymocarpus. In the present communication, 

 which is accompanied by a drawing, and in illustration of which the 

 flowers and fruit, preserved in spirits, were also exhibited to the So- 

 ciety, the author notices several interesting facts which an ex- 

 amination of living specimens in a more perfect state has enabled 

 him to supply, and which greatly strengthen its claims to be re- 

 garded as the type of a distinct genus. Among these is the per- 

 sistent nature of the calyx, so different from that of Tropceolum, 

 which is strictly deciduous ; and not only is the calyx persistent, 

 but it undergoes considerable changes during the progress of the fruit 

 towards maturity. Mr. Don attributes the greater regularity and 

 shortness of the limb of the calyx in this plant to the almost total 

 absence of petals, and to the diversion of a considerable part of the 

 nourishment to supply the greater development of the tube. He 

 concludes by making some additions to the technical part of his 

 former description. 



Remarks on some British Ferns, also by Mr. Don. 



The author's attention having been lately directed to the exami- 

 nation of some species of Ferns more recently added to the British 

 Flora, he lays the results of his investigation before the Society in 

 this paper : they are briefly as follows : 



Aspidium dumetorum, a species first proposed by the late Presi- 

 dent of the Society, Sir J. E. Smith, in the fourth volume of the 

 English Flora, is made up of two plants ; the one, from Cromford 

 Moor, being a dwarf state of A. ddatatum ; and the other, from 

 Ravelston Wood, near Edinburgh, being nothing more, as is proved 

 by a close inspection of the original specimens in the Smithian Her- 

 barium, than an accidental variety of the same species A.ddatatum, 



