Proceedings of Learned Societies. 71 



les especes qui le composent, et description d'une nouvelle espece de 

 cette division. Par M. De Lafresnaye. — The author makes out six 

 species, including his undescribed one, to be now known in this li- 

 mited South American genus. The new species figured under the name 

 of M. dimidiatus seems to be identical with the R. melanogaster of 

 Swain, described in Lardner's * Animals in Menageries/ p. 359, and 

 if so the latter name must give way. It is said by Lafresnaye to be 

 brought from the southern part of Mexico, and is entirely of a bril- 

 liant/carlet, inclining to rich purple on the head and neck, and with 

 the wings, tail, and centre of the belly deep black. Mr. Swainson 

 gives Peru as the locality for his species. — 2. Continuation of the 

 "Synopsis Avium, ab Alcide D'Orbigny." — 3. Continuation of " Voy- 

 age de la Favorite," Classe III. Reptiles, illustrated by five plates. 



Livraison 4 me , 7 me anne.e. 

 1. Documents pour servir a Vhistoire naturelle des Cephalopodes 

 cryptodibranches, par M. Rang. These " documents" are not com- 

 pleted ; what we have published commence a series of notes on the 

 genus Argonauta, and are accompanied by three figures of the A. Argo 

 in different positions in the shell. — 2. Description de trois nouvelles 

 especes de Paludinesfossiles, par M. Charles D'Orbigny, with figures. 

 — 3. Forficula parallela, Westwood. A native of Mexico. Figured. 

 — 4. HelopsLanipes, Fabricius: description and figures of the states of 

 the imperfect insect. — 5. Insectorum nonnullorum exoticorum efami- 

 lia Cynipidarum descriptiones, auctore J. O. Westwood. Leiopteron 

 peras, West. Italia scalpellator, West. Shortly described. The two 

 first figured in outline. — 6. Genus Conura, Spinola. Conura flave- 

 s cens, shortly described and figured. — 7. Xiphicer a, hsitreiWe. X. Cater - 

 naultii, Leisthamel, n. s., described by Baron Leisthamel, and illus- 

 trated with a coloured figure; and X.Pierrettii, described by Blanchard, 

 and also illustrated by a coloured engraving : both are considered new 

 to science, and of the last the describer is aware of only a single spe- 

 cies. The first is a native of Cayenne, the latter of Brazil. 



PROCEEDINGS OF LEARNED SOCIETIES. 



v LINN^IAN SOCIETY. 



Jan. 16, 1838.— Mr. Forster, V. P., m the Chair. 



Read a Paper on the Structure of Cuscuta europcea. By Charles 

 C. Babington, Esq., M.A., F.L.S. 



The descriptions and figures of this plant given in the various 

 works on our native plants are very imperfect, Mr. Babington's 



