Genera of the Cossonidce. 641 



Genus 103. TETRACOPTUS. 



Wollaston (vide, ante, p. 493). 



Tetracoptus reductus, n. sp. 



T. cylindricus, convexus, nitidus, niger ; capite protho- 

 raceque minutissime et levissime punctulatis, illo crasso, 

 rostro brevissimo lato crasso antice late canaliculate, hoc 

 magno, elongate, triangulari-cylindrico, antice parum dis- 

 tincte constricto ; elytris (latitudine prothoracis versus 

 basin) cylindricis, paulo minus nitidis, tenuiter punctato- 

 striatis, interstitiis depressis ac minutissime uniseriatim 

 punctulatis, ad humeros sub-plagiatim rufescentioribus ; 

 antennis pedibusque breviusculis, piceis. Subtus alutaceus, 

 subopacus, minute parce et levissime punctulatus. 



Long. corp. lin. 1J. 



Habitat ins. Nov. Guinea, ad Dorey a Dom. Wallace 

 detectus. A Dom. Pascoe ad describendum missus. 



Genus 104. XESTODERMA. 

 Wollaston (vide, ante, p. 494). 



a. Scutellam (prcesertim in #) sat magnum, subrotun- 

 datum. 



Xestoderma Wallacei, n. sp. 



X. angustula, cylindrica, convexa, nitidissima, atra ; 

 capite rostroque (brevi) latis, crassis, minutissime punctu- 

 latis ; prothorace (elongate, cylindrico-ovato, antice leviter 

 constricto) etiam subtilius, sc. subtilissime, punctulato, 

 ^equali; elytris cylindricis, leviter striato-punctatis, striis 

 versus suturam profundioribus, interstitiis depressis ac sub- 

 tilissime parcissimeque punctulatis; antennis pedibusque 

 vix picescentioribus, capitulo ferrugineo. Subtus alutacea, 

 parcissime et levissime punctulata. 



Mas, rostro paulo longiore et omnino parallelo ; scutello 

 submajore, aut magis rotundato. 



Long. corp. lin. 2J 3. 



Habitat ins. Malayenses, in Ceram et Ternate a Dom. 

 Wallace lecta. Communicavit Dom. Pascoe. 



b. Scutellum minus, et breve, transversum. 

 Xestoderma atra, n. sp. 



X. prascedenti paulo minor ac subdistinctius punctulata ; 

 rostro inter antennas late et obsolete impresso ; scutello 



