Genera of the Cossonidcs. 639 
nore nitidiore et paulo grossius sciilpturato, rostro suban- 
gustiore, prothorace elytrisque ad basin rectius truncatis, 
his ad apicem hand singulatim rotundatis, scapo minus 
cm-vato, tarsisque subgracilioribus, art.° 3"° magis sim- 
plici.) 
Genus 100. C Optus. 
Wollaston {vide, ante, p. 492). 
Coptus oculatus, ii. sp. 
C. angustns, parallelus, snbdepressus, nitidus, rufo- 
piceus aut fere piceo-ferrugineus ; rostro (brevi, lato, 
parallelo, arcuato) minute punctidato, oculis maximis, 
valde prominentibus ; prothorace ovah-cylindrico, antice 
-leviter constricto, aiquali, profundius punctato; elytris 
parallelis, subrufescentioribus, sat profunde punctato- 
striatis, interstitiis minutissime parcissimeque uniseriatim 
punctulatis; antennis pedibusque clarioribus. Subtus 
parce et parum leviter punctatus. 
Long Corp. lin. 1^. 
Habitat ins. Malayenses, a Dom. Wallace in Sula 
repertus. In collectione Dom. Pascoe. 
Coptus viinor, n. sp. 
C. prfecedenti similis, et forsan ejus varietas insularis. 
Differt solum corpore subminore, subpalhdiore, necnon 
rostro prothoraceque subdensius ac sensim minus grosse 
punctatis. 
Long. corp. lin. \^. 
Habitat Nov. Guinea, ad Dorey et Saylee a Dom. 
Wallace depreliensus. 
Genus lOL Pachyops. 
Wollaston {vide, ante, p. 492). 
Pachyops cylindricus, n. sp. 
P. angustus, parallelus, convexiusculus, cylindricus, 
subnitidus, niger aut subpiceo-niger ; capite (magno, lato, 
crasso, convexo, valde exserto) rostroque (brevi, lato) 
dense sed parum minute punctulatis, fronte obsoletissime 
et tenuiter canaliculata ; prothorace (elongato, conico- 
cylindrico) dense et proftmdius punctato, fequali sed in 
linea media obsoleta lajviore ; elytris elongatis, ]?arallelis, 
grosse punctato-sulcatis, interstitiis convexis, costiformibus 
ac minutissime uniseriatim punctulatis ; antennis pedibus- 
