200 I February, 



TROPICAL AFRICAN COLEOPTERA; CHIEFLY FROM THE 

 ZANZIBAR MAINLAND. 



BY H. W. BATES, F.R.S., &c. 



{Continued from Vol. xxiii, p. 57). 



Dbimostoma explanatum. — D. Westermanni (Chaud.) proxime affine sed 

 differt thoracis lateribus IcBvibus, etc. Sat late oblongnm sub-convexum, 

 piceo-nigruon politum, partibus oris antennis pedibusque piceo-fulvis ; palpis 

 apice recte truncatis ; capite brevi, sulcis frontalibus profundis usque post 

 oculos extensis, sutura frontali proftinda ibique epistomatis margine plicato ; 

 angulis lateralihus {supra anttnnis) dilatutis rejiexis : thorace lata, toto 

 impunctato, lateribus sat regulariter arcuatis, late et regulariter a basi vsque 

 ad apicem expla7iato-refl€xis, lineis transversis nullis, sulculo dorsali acuto 

 integro, sulcis basalibus linearibus profundissimis, angulis basahbns dentiferis: 

 elytris basi dilatatis, humeris rotundatis nee dentatis, acute et profunde 

 siriatis striis fundo punctulatis vix crenatis, interstitiis latis fere plants ; 

 corpore subtus Icevi. Long., 9| mm. 



Cameroons ; one example. Belongs to the small group of the 

 genus in which the antennae are slender, not moniliform, and the 

 elytra broadly oblong-ovate. 



Dbimostoma euglyptum. — D. punctifronti (Chaud.) affine; gracilius 

 ovatum elytris convexioribus ; piceo-nigrum politum, partibus oris antennis 

 pedibusque rufis : fronte utrinque grosse confliienter punctata, snlcis obtectis : 

 thorace parvo sub-rotundato, angulis posticis obtusis denticulo parvo, supra 

 IcBvissimo, margine suhtili, sulcis basalibus late excavatis : elytris crenato- 

 sulcatis interstitiis convexis ; meso et metasternis ventreque utrinque punctatis. 

 AntenncB moniUformes. Long., 5 mm. 



Old Calabar. 



Galeeita eubens. — Magna, elytris elongato-ovatis versus basi}i per- 



parum angustatis, costis parum elevatis interstitiisque alutaccis subtiliter 



sparsim setifero-punctulatis ; capite thorace antennis pedibus et pectore rufis 



subnitidis, elytris nigris, abdomine fusco basi rufo: capite sat gracile post 



oculos semi-ovato ; thorace medio rotundato-dilatato, antice gradatim longe 



rotundato,postice valde sinuatim, angustato, angulis posticis paullo exstantibus, 



capite et thorace sat crebre hie illic rugulose punctulatis, nitidis. 



Long., 26 mm. 

 Old Calabar. 



Differs from all other African species by its broad elongate-ovate 



elytra, the costse of which are narrow and much less elevated than in 



O. femoralis, and the shoulders a little less marked. 



Anthia pe^signis. — A. Peteisii (K\\iq) affinis, thorace pone dilatationem 

 abrupte sinuato-angustato elytrisque valde elongatis parallelis. Nigra, sub- 

 nitida, supra breviter nigro-setosa ; thorace vitta laterali {basin hand atfin- 



