424 Mr. H. W. Bates on Cerambycidce 
densissime breviter nigro-hirsutis ; thorace transverse, 
quadrate, lateribus medie et prope angulum posticum 
profunde emarginatis, margine postice medio lobato, lobe 
emarginato, supra dorse modice convexo, costis tribus 
longitudinalibus, duabus lateralibus magis elevatis et 
antice abbreviatis ; elytris subtiliter dense scabrosis, 
opacis, sutura et costa longitudinali glabris, nitidis; 
pectore et abdomine nigro-variegatis ; pedibus nigris, 
femorum et tibiarum basibus ocbraceis. 
Long. 12 lin. $ . 
Hah, — Ega. One example on foliage. 
It is possible, notwithstanding the great differences in 
the antennse, thorax and elytra, that this species is the 
? of Ctenodes isahellina ; if so, Tropidosoma dilaticorne is 
the $ of some unknown species of Ctenodes, 
Genus Ctenodes. 
Olivier, Entom. No. 95 bis, vol. vi. p. 779. 
1. Ctenodes isahellina^ n. sp. 
Paulo convexa, postice valde dilatato-rotundata, fulvo- 
ochracea, nigro-varia; capite macula frontali alteraque 
post oculos nigris; antennis omnino nigris, ab articulo 
3io regulariter pectinatis, opacis ; thorace quadrato, lateri- 
bus utrinque antice lobis magnis duobus obtusis, angulo- 
que postico in lobum acutum producto, margine postico 
bisinuato, supra dorso valde convexo et quinque-tuberoso, 
grosse punctato-scabroso, maculis duabus magnis nigris ; 
scutello valde elongate, triangular!, nigro ; elytris lateri- 
bus explanatis, mox pone basin gradatim dilatatis, ante 
apicem angustatis, apicibus acute conjunctim rotundatis 
et paulo sinuatis, supra creberrime subtiliter rugosis, 
opacis, utrinque costis quatuor et margine lateral! elevate 
glabris, costa prima juxta suturam, quarta minus dis- 
tincta et ante apicem cum tertia conjuncta, fulvo-ochraceis, 
triente posteriori nigra, nigredine antice ad suturam pro- 
funde sinuata; pectore, lateribus, pedibusque nigris. 
Long. 12 lin. d'. 
Ega. One example, flying in the forest. 
