116 Dr. E. Bergroth on some Hihiopian Pentateniales 
nigris, jugis apice leviter oblique late truncatis, rostro apicem 
segmenti tertii ventralis attingente, antennis nigris, articulo 
primo apice excepto obscure testaceo, secundo et tertio sulcatis, 
hoe illo longiore, quarto tertio longiore, quinto tertio perpaullum 
longiore, pallide flavido, apice leviter fuscescente. Pronotum 
lateribus parum sinuatum, angulis lateralibus acutinsculis, 
levissime prominulis. Hemelytra apicem abdominis leviter supe- 
rantia, corio macula magna media nigra notato, membrana fusca, 
paucinervi. Abdomen sat fortiter rotundato-ampliatum, macula 
angusta oblonga marginali segmentorum pallida, segmentis con- 
nexivi basi et apice nigrinis, angulis apicalibus leviter prominulis, 
ventre sat fortiter convexo, sulco medio obsoleto, spiraculis nigris 
antice callo parvo pallido terminatis, segmento quinto medio ad 
basin gibboso-elevato, segmento sexto maris quinto medio haud 
duplo longiore, angulis apicalibus obtusiusculis sed haud rotun- 
datis, segmento genitali maris apice medio profunde sinuato. 
Pedes sordide testacei, femoribus minute fusco-punctatis, subtus 
remote minute spinulosis, tibiis nigris, mediis annulo medio pallido 
signatis (pedes postici desunt). 
Long. g 15°55 mm. 
Gaboon. Coll. Fallon. 
Differs from all the other species in the more convex 
venter with indistinct furrow, and in having (at least in the 
male) the fifth ventral segment gibbous at the base. 
ADELOLCUS, gen. nov. 
Corpus supra modice, subtus sat fortiter convexum. Caput supra 
planiusculum, parte anteoculari latitudine longiore, lateribus ante 
oculos leviter sinuatis, deinde parallelis, jugis apice oblique sub- 
rotundato-truncatis, tylo jugis perpaullo longiore, ocellis pone 
lineam inter basin oculorum fictam sitis, bucculis humilibus, antice 
rectangulatim leviter elevatis, rostro coxas posticas superante, 
articulo primo postice buceuias subwequante, secundo  tertio 
longiore, quarto tertio breviore, antennis ab apice capitis quam 
ab oculis fere duplo longius distantibus. Pronotum marginibus 
lateralibus anticis integrum, anguste reflexum, angulis posticis 
rotundatis. Scutellum parte apicali sat angustum, frenis post 
medium extensis. Prostethium postice subrectum ; mesosternum 
medio carinatum: sulcus orificialis oblique antrorsum longe exten- 
sus, rectus. apice acutus, area evaporativa ampla, usque ad angulum 
anticum mesopleure oblique extensa. Corium scutello longius, 
margine apicali recto, prope angulum apicalem levissime sinuato ; 
membrana simpliciter nervosa, Abdomen subtus per segmentum 
secundum late levissime suleatum, angulis posticis segmentorum 
leviter prominulis. Femora antica subtus obsolete denticulata ; 
tibiz omnes supra plane, marginate. 
The structure of the rostrum, the straight hind margin of 
