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



nem posticum inter angulum apicalem et regioncm analem. Vena mediastina aptce 

 bifida (Tab. II. fig. 3 B, a); vena postcostalis (b) ad apicem dcllcxa etianujiie bifida, ra- 

 mos tres longitudinalcs postice emittens, quorum ramus o manifeste UialogUI rtmo 

 in figuris Mysidia etDerbe; vena mediana (c) ramos tres postice emittens. [Hamulus 

 littera z notatus, quamvis primo intuitu pro ramo venae postcostalis haberi possit, <\i- 

 denter ramulum medianum z in figura Mysidia lactiflorm rcprcscntat j in Phemcc ta- 

 men ramulus minutus ante medium adjectus est, e vena ]>ostcostali emissus et ramo 

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

 posticaa absque venis transversis. 



Phenice fritillaris. Westw. (Derbe fritillaris. Boh.). 



Nigra ; rostro pedibus pectorisque lateribus fiavis, capitis carina pallida fusco- 



punctata, hemelytris alisque albis nigro tesscllatis. 

 Long, alis clausis 3^ lin. 

 Habitat in Sierra Leona. Mus. D. Schonherr. 



Phenice fasciolata. Westw. (Derbe fasciolata. Boh.). 



Tab. II. Fig. 3. 



Pallide flavescens imrriaculata ; pedibus concoloribus, abdominis lateribus lu- 



teis, hemelytris albis, fasciis irregularibus laete fuscis. 

 Long, alis clausis vix 4 lin. 

 Habitat in Sierra Leona. Mus. D. Schonherr. 



Phenice stellulata. Westw. (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, Dlospolls, 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 antennae, &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 



