Mr. Westwood's Observations on the Genus Derbe. 11 



nem posticum inter angulum apicalem et regionem analem. Vena mediastina apice 

 bifida (Tab. II. fig. 3 B, a); vena postcostalis {b) ad apicem deflexa etiamque bifida, ra- 

 mos tres longitudinales postice emittens, quorum ramus o manifeste analogus ramo o 

 in figuris Mysidice et Derbe ; vena mediana (c) ramos tres postice emittens. [Ramulus 

 littera z notatus, quamvis prime intuitu pro ramo vense postcostalis haberi possit, evi- 

 denter ramulum medianum z in figura Mysidits lactiflorm representat ; in Phenice ta- 

 men ramulus minutus ante medium adjectus est, e vena postcostali emissus et ramo 

 mediano continuus, unde ramus z postcostalis videtur potius quam medianus.] Aim 

 posticae absque venis transversis. 



Phenice fritillaris. IVestw. (Derbe fritillaris. Boh.). 



Nigra ; rostro pedibus pectorisque latefibus flavis, capitis carina pallida fusco- 



punctata, hemelytris alisque albis nigro tessellatis. 

 Long, alis clausis 3^ lin. 

 Habitat in Sierra Leona. Mus. D. Schonherr. 



Phenice fasciolata. IVestw. (Derbe fasciolata. Boh.). 



Tab. II. Fig. 3. 



Pallide flavescens imrnaculata ; pedibus concoloribus, abdominis lateribus lu- 



teis, hemelytris albis, fasciis irregularibus leetfe fuscis. 

 Long, alis clausis vix 4 lin. 

 Habitat in Sierra Leona. Mus. D. Schonherr. 



Phenice stellulata. IVestw. (Derbe stellulata. Boh.). 



Corpore fusco-rubricante ; capite antennis pedibusque pallidis, hemelytris fu- 



liginosis albo-punctatis ; nervis costalibus sanguineis. 

 Long, alis clausis vix 3 lin. 

 Habitat in Sierra Leona. Mus. D. Schonherr, 



On reviewing the characters of the five preceding subgenera, Derbe, My- 

 sidia, Diospolis, Thracia and Phenice, we find that, notwithstanding the great 

 variation in the form of the wings and the arrangement of their veins, the size 

 of the antennse, &c., there are certain characters which they possess in com- 

 mon, which we must accordingly regard as those of the genus. These con- 

 sist of, 1st, the minute size of the terminal joint of the rostrum ; 2nd, the com- 



c 2 



