Coleoptera from Ghontales. 169 



the females described, except in the much gi'eater length 

 of the antenna3. The completed diagnosis of the species 

 will run as follows : — 



Antice et postice attenuata, subtiliter punctulata, fusca 

 leviter aeneo-tiucta, apice pallidiori ; thorace ante spinam 

 valde attenuato, margiue Itevi absque carina, antennis 

 violaceo-cupreis, apice rufescentibus. 



(?. Antennte corpore longiores, articulis linearibus 

 3-4 compressis, 4-11 subtus denticulatis. 



? . Antenna? corpore tertia parte breviores, articulis 

 3-6 compressis, omnibus angulis rotundatis, subtus bre- 

 vibus. 



Choutales : many examples. The form of the anienna? 

 in both sexes is similar to that of the Mexican M. 

 longlceps. 



Holonotus nigrocenens, Bates, Trans. But. Soc. 1869, 

 p. 57. — Appai'ently rare. Differs from other species of 

 the same genus in the thorax being narrower than the 

 elytra, and attenuated towards the head. The antennte 

 are strongly compressed, and not half the length of the 

 body, but I suspect all the examples examined are 

 females. The anterior and middle sterna are locked 

 together by the projection of the mesosternum over the 

 edge of the prosternum. 



Otheostethus, nov. gen. 



Sub-familige Poecilosonmice pertinet. Corpus oblongura, 

 modice convexum. Caput parvum, vertice canaliculate, 

 fronte epistomateque profunde concavis, genibus brevis- 

 simis. Oculi reniformes, sat convexi, distantes, infra* 

 magni. Mandibulas parvag, curvatao. Palpi breves, arti- 

 culis terminalibus cylindricis. Antennae ^ corpori longi- 

 tudine tequantes, robustse, articulis 3-10 minute strigosis, 

 opacis, apice intus dilatatis serratis, Imo brevi. Thorax 

 quadratus, valde transversus, lateribus uti'inque tequaliter 

 breviter tridentatis, margiue posteriori medio rotundato- 

 lobato. Scutellum breviter triangulare. Elytra ad basin 

 utrinque in sinu marginali thoracis producta, apice obtuse 

 late truncata, anguiis breviter dentatis; supra grosse 

 scabroso-punctata, utrinque 4-costulata. Prosternum ultra 

 coxas hand productum, apice obtusum. Metasternum 

 inter coxas intermedias productum, elevatum, conicum ; 

 mesosternum parvum, olstectum. Metasterni episterna 

 parallela. Pedes et tarsi brevissimi. 



