1840.] Linncan Sociel?/, 85 



R. An. MS. pi. 58, f. 3, forms another subgenus ; and that the two 

 following groups also constitute two other subgenera of Derbe : 



Patara. Rostrum ad basin pedum posticorum extensum. Oculi maximi, 

 subtiis emarginati. Ocelli obsoleti. Antenna5 maximas, compressse, 

 verrucosse, apice subtruncato et setigero. Alse anticas longitudine 

 mediocres, apice rotundat^, venis paucis cellulisque tribus discoidali- 

 bus. 

 P. guttata, capite thoraceque fulvis, alis anticis griseo-fuscis margine albo- 



guttatis. Insula S^' Vincentii. D. Guilding. Mus. D. Hope. 

 P. alhida, luteo-albida; antennis nigricantibus, alis anticis albis farinosis 

 apicem versus fuscescenti-tinctis, guttis albis sanguineisque ornatis. 

 Insula S'" Vincentii. D. Guilding. Mus. D. Hope. 



Cenchrea. Frons pariim producta. Oculi magnl, emarginati. Ocelli 2. 

 Antennae minute, articulo 2do brevi subrotundato. Protborax latus, 

 lateribus pro veceptione antennarum concavo-dilatatis. Alis anticre 

 elongatee, angulo antico apicali valde obtuso, venis perpaucis longi- 

 tudinalibus. 

 C. dorsalis, pallide testaceo-fulva ; alis anticis flaveseentibus margine 

 interno fuscis apice punctis duobus purpureis. Insula S*' Vincentii. 

 D. Guilding. Mus. D. Hope. 



The species above described, together with their structural cha- 

 racters, and especially the variations in the direction of the veins of 

 the wings, were illustrated by numerous magnified figures- 



December 15. 

 Mr. Forster, V.P., in the Chair. 



The Rev. William Cuthbert, D.D., and WilUam Griffith, Esq., 

 of the Hon. East India Company's Medical Service, were elected 

 Fellows. 



Read, an " Account of two new Genera of Plants, allied to Ola- 

 cineee." By George Bentham, Esq., F.L.S. 



The two new genera on which this paper is founded are Pogope- 

 talum, Benth., collected by Mr. Schomburgk in British Guiana ; and 

 Apodytes, named but not described by Prof. Ernst Meyer, among 

 the South African plants collected byDrege. A third genus, Lere- 

 tia of Vellozo, figured in the ' Flora Fluminensis,' is also character- 

 ized for the first time. 



After noticing the opinions of various authors as to the affinities 



