( 497 ) 



Caput dense grosse i)uuctatnm, inter antennas profundc eanaliculatiim, vcrtice 

 medio spatio parvo laevi instrnctmn. Antennae corpore plus dnplo longiores, seapo 

 dense pnuctato. Protliorax rugato-pnnctatus, disco suLreticnlatus, latitadine vix 

 brevior, subrectangularis, lateribns inconspicne rotuudatns, medio deute brevi sub- 

 spiniformi parum versus posticum directo armatus, dorso ante medium utrinque 

 subtuberculatus, medio ipso etiam levissime elevatns. Scutellum rotundatum, \-ix 

 triangulare, punctatiun, apice impressnm. Elytra Jipice subtruncato-rotundata, 

 rudissime confcrtissime punctata, singulo disco in dimidio basali bi-, in dimidio 

 apicali uni-subcostato. 



Infra grosse puuctatns. Femora et tibiae longitrorsum subsulcata, postioa 

 abdominis a,picem subattingentia. 



Long. -M mm., elytr. 14, lat. of. 



Ball. Benue River (W. Africa). 



Very peculiar as regards the entirely black colour. 



17. Stromatium hirsutum sp. nov. 

 S. S. nigro-brunuoum, infra leviter nitidum, supra opacum, omuino pilis erectis 

 hirsutum, praeterea sat sparsim flavescente-pnbescens, pube in prothorace et elytris 

 plus miiinsve seriatim disposita. Caput et prothorax subreticnlato-rugati. Antennae 

 corpore panhj longiores, fortiter — praecipue articulis tribus basalilius — rugato- 

 punctatae, articulo secnndo sat longo. Prothorax longitudiue latitudini aequali, 

 convexus, lateriljus rotundatus ; disco levissime depresso tuberculis duobus minutis 

 medianis nitidis instructus. Scutellum rotundatum, dense flavescente-pubescens. 

 Elytra prothorace hand latiora, fortissime I'ugato-punctata, in singulo disco duabus 

 lineolis medianis brevibus approximatis jiallide oiOiraceis notata ; singulo apice 

 extns fortiter rotnndato, angnlo suturali valde obtuso. 



Caput infra transverse striatum et rugatum. Sterna fortiter rugato-pnnctata ; 

 metasternnm medio lougitudinaliter profnnde sulcatum ; processu iirosternali uon 

 elevato pone coxas fortiter declivi parum impresso, mesosternali sat lato, declivi, 

 medio jjarum impresso. Abdomen fortiter, medio minus dense, punctatum. Pedes 

 rnguloso-punctati, femoribns infra rugatis, posticis apicem segmenti tertii abdo- 

 minalis attingentibus. 



Long. 16 mm., elytr. 11, lat. 4. 



The structure of the derm of this species is very coarse. The elytra have two 

 raised stripes each, the middle parts of which are more elevate, smooth, and of a ])a]e 

 ochreons colour. 



HnL Kayes (Senegal). 



18. Clytosaui'us siamensis sp. nov. 

 (PI. XIII., tig. U.) 

 CI. niger, pube flava ornatus. Caput fronte pcrpendiculari planatum, grosse 

 punctatum, flavum, vitta mediana frontali antice abbreviata, vitta anteocnlari 

 indistincta, nigris. Antennae rufo-ochracoae, versus apicem fulvae, elytrornm 

 medium attingentes ; seapo dense punctulato, articulo tertio crassiore, qninta parte 

 breviore. Prothorax snbglobosus extrema basi fortiter strangulatus, dorso medio 

 longitrorsum clevatus, mox pone marginem anticnm subtuberculatus, in medio ipso 

 transversa carina brevi instmctus, omnino rugatus, in ntris([ue lateribns arcuatim 

 impressns, arcn sat lato mox pone medium lateris incipiente oblique versus dorsum 

 et basim ascendente, constrictionem basalem hand attingente ; Havo-jinbescens, 



