species of HaliplidoB and Hydroporidce. 423 



6. H. rufus, n. sp. 



Ovatus, brevis, crassus, corpore supra convexiusculo, valde 

 punctato, rufo, nigro-lineato ; capite antice marginato, punc- 

 tato, thorace antice eraarginato, ad latera obliquato (subro- 

 tundato) tenue marginato, ad basin sinuato, et ad medium 

 late angulato, punctato, rufo, ad basin plus minus fusco-adum- 

 brato; elytris latis, brevibus, dense et fortiter punctatis, sutura 

 et quatuor lineis nigris, parallelis, aliquando obscuris, interdum 

 post medium breviter interruptis ; corpore subtus valde punc- 

 tato, rufo ; antennis pedibusque rufis. 



Long. Corp. 2 lin, ; lat. 1^ lin. 



The only tendency to variation that I can trace in this species 

 is the comparative obliteration of the longitudinal lines on the 

 elytra; the dark-red colour pervades the whole of the surface, so 

 as to render the markings somewhat obscure ; in two examples 

 the lines are interrupted behind the middle. 



Examples of this species are in Mr. Bowring's Collection. From 

 the coast of China. 



7. H. rufo-niger, n. sp. 



Ovatus, brevis, latus, sparsim punctatus, punctato-striatiis, ni- 

 tidus, niger ; capite inter oculos undique depresso, impunc- 

 tato, rufo ; thorace antice vix emarginato, lateribus obliquis, 

 haud rotundatis, basi ad medium late angulato, tenuiter 

 punctato, nigro-rufo ; elytris marginibus cum thoracis lateri- 

 bus vix angulum formantibus, punctatis, bistriatis, interstitiis 

 sparsissim^ punctatis, nigris vel rufo-nigris, nitidis ; corpore 

 subtus, antennis pedibusque rufis. 



Long. Corp. lin. \f; lat. lin. f — 1. 



From China, taken by Mr. Bowring. I have also before rae a 

 single specimen from Mr. Bowring's Collection, labelled as from 

 Java. 



Genus 2. Hydroporus, Clairv. 



§ A. Thorace haud longitudinaliter striato. 



1. H. carhonarius, n. sp. 



Ovalis, penitus circularis, depressus, punctatus, carbonarius, 

 nitidus ; capite subtilissira^ punctato, rufulo ; thorace antice 

 emarginato, lateribus obliquis rotundatis, basi subsinuato, ad 

 medium late angulato, punctato, punctis crebris et distinctis, 



