208 Mr. H. W. Bates on Longicorn 



Acantlioderes rubripes, n. sp. — A. Daviesii et A. Sweden 

 proxime affinis, differt colore fusco-rufo et antennis arti- 

 culis 3io et 4to apice dilatatis. Breviter ovatus, fusco- 

 rufus, subnuduSj capite infra oculos utrinque maculis 

 duabus^ verticeque quatuor (seepe obsoletis) ochreo-flavis : 

 thorace dorso bituberoso, inter tuberes bisulcato, sulcis 

 et marginibus anticis et posticis grosse punctatis, lateri- 

 bus ante et post tuberculum et disco ochreo-maculatis ; 

 elytris trigonis^ apice late truncatis^ angulo exterior! 

 paulo producto, supra leevibus, prope basin pauciter 

 aspere punctulatis, maculis ochreis utrinque circiter 14 

 (medio disci duabus minutis) ; antennis articulis 1-2 

 rubris, 3-9 testaceis apice nigris, 3-4 apice dilatatis ; 

 pedibus rubris, femoribus basi et apice nigris, tarsis 

 fulvis ; corpore subtus nigro-fusco, metasterno utrinque 

 fiavo-trimaculato ; abdominis segmentis utrinque biseria- 

 tim flavo-maculatis, segmento basali medio bimaculato, 

 apicali rufo. 



Long. 5^-7 lin. <J ? . 



A small number of examples. 



Acanthoderes Icevicoliis, n. sp. — A. ruhripedi simillimus, 

 differt colore rufo, thorace laevi, convexo, nitido, absque 

 tuberibus et sulcis dorsalibus, elytrisque maculis majori- 

 bus utrinque 9 (medio disci macula unica) ; vertice et 

 thoracis disco immaculatis ; corpore subtus pedibus et 

 antennis simillimis, metasterno medio rufo excepto. 



Long. 5^-7 lin. S ? . 



Many examples exactly similar. The co-existence in 

 the same locality of two species so nearly identical as 

 the preceding, is very remarkable ; and had it not been 

 for the striking structural difference of their thorax, and 

 their constancy, I should have concluded them to be 

 varieties. It may be added, that they are numbered as 

 distinct in Mr. Belt's collection. Acanthoderes Swederi 

 presents a chestnut-red variety, but this species is very 

 distinct in its undilated third and fourth antennal joints. 



Discopus quadriscopulatus, Thoms. Physis. II. 146. — • 

 Also found in Guatemala. In the proportion of the 

 antennal joints, form of anterior tibiae, and facies, this 

 species differs greatly from Discopus spectabilis, the type 

 of the genus, and demonstrates the impossibility in this 

 group, of forming genera on peculiarities in the antennee. 



