294 Mr. H. W. Bates’s Notes on Longicorn Coleoptera. 
Hemilophus cayennensis. 
Subcylindricus, robustus, fusco-niger, antennarum articulis quinto ad 
septimum totis, quarto apice, secundo ad quartum octavoque basi 
flavis; capite linea verticis genisque cinereis; thorace vitta lata 
utrinque laterali cinereo-tomentosa : elytris apice late rotundatis et 
prope suturam breviter truncatis, carina laterali valde elevata 
flexuosa, dorso basin versus punctulatis, fascia postmediana (ad 
suturam late interrupta) alba fulvo-marginata, maculaque humerali 
fulva; femoribus pallide fulvis ; abdomine( ? ) segmentis secundo 
et tertio albo-tomentosis ; antennis articulis tertio at quarto modice 
elongatis, infra dense ciliatis. 
Long. 62 lin. S), 
Cayenne. 
Hemilophus duplicatus. 
Subangustus, erecte pilosus, fusco-niger, fronte, thoracis lateribus, 
elytrisque vitta lata mediana, macula supra callum humeralem 
lineaque marginali versus humeros ochraceo-fulvis: capite angusto, 
retracto; antennis articulo tertio modice, quarto vix elongato, 
subtus dense hirsutis ; thorace cylindrico ; elytris parallelis, apice 
rotundatis, carinis lateralibus utrinque duabus, interiore abbrevi- 
ata ; femoribus basi fulvo-rufis. 
Long. 5 lin. 6? 
New Granada. 
Differs from all other species of the genus in its retractile 
head and double elytral carina, besides the much shorter fourth 
joint of the antenne. In other respects it presents the cha- 
racters of Hemilophus, and in colours resembles H. fasciatus 
and H. spectabilis. 
Tyrinthia macilenta. 
Angusta, elongata, postice sensim dilatata, supra fulva, thorace 
medio elytrisque utrinque vitta nigro-fuscis; capite antice fulvo, 
postice nigro fulvo-trivittato : vertice profunde impresso, fronte 
modice prominula; antennis gracilibus, nigris, articulo tertio infra 
(quartoque basi) longe ciliato; thorace angusto; elytris dense 
substriatim punctulatis, absque costulis; pedibus nigris, coxis 
femorumque dimidio basali flavo-testaceis. 
Long. 33-5 lin. 
Novo Friburgo, Rio Janeiro. 
Tyrinthia longiscapus. 
y 
Gracilis, erecte breviter nigro-pilosa, supra fulva ; capitis vertice et 
vittis tribus, thorace vitta dorsali alteraque laterali, elytris vitta 
abbreviata communi basali-suturali alteraque utrinque apicali 
(versus medium, interdum usque ad basin) attenuata nigris: an- 
tennis nigris, longe pilosis, scapo valde elongato, articulo tertio 
