160 Mr. H. W. Bates's additions to the 



apicibusque recte truncatis, vittula utrinque valde obliqua basali 

 nigro-fusca, interdum obsoleta (ibique aspere punctulatis). Antennae 

 mediocres, articulis 5 — 10 serratis, 3io duobus sequentibus con- 

 junctis longiori, cjlindrico, tenni ; obscure rufis. Thorax subovatus, 

 postice angustatus, pilis argenteis anguste marginatus. Pedes 

 obscure rufi, femorum clava nigro-fusca. Abdomen gracile clavatum 

 ad basin attenuatum, nigro-fuscum, vel obscure rufum, segmentis 

 1 — 3 postice flavo-marginatis ; ^ articulo apicali ventrali medio 

 valde concavo, $ piano. Long. 9 — 15 millim. 



Ilab. Mexico, Temax in N. Yucatan (Gaumer). 



Acyphoderes crihricollis, n. sp. (PI. VI., fig 6, <? ). 



A. acutipenni (Chevr.) affinis ; differt inter alia, thoracis disco 

 grosse punctato, limbo partibusque depressis aureo-tomentosis. 

 Multo angustior, nigro-fuscus, aureo-fulvo pubescens, elytris fulvis, 

 vitreis, antennis et pedibus fulvo-rufis, femoribus posticis versus 

 basin tibiisque apice nigro-fusco annulatis. Caput antice fiilvo- 

 aureo tomentosum, vertice glabro grosse punctato. Thorax sat 

 angustus, subovatus, disco insequali subcalloso glabro grosse punc- 

 tato, limbo fulvo-aureo tomentoso. Elytra usque ad basin seg- 

 ment! peuultimi extensa, vitrea, fulva, fusco-marginata, passim 

 sparse punctulata, gradatim dehiscentia, apice obtuse rotundata. 

 Abdomen subtus fulvo-bifasciatum, segmento apicali ventrali rotun- 

 dato-dilatato concavo. Antennae sat graciles, articulis 6 — 10 sen- 

 sim pauUulum latioribus et serratis. Femora omnia gracile cla- 

 vata. Long. 15 — 18 millim., f^". 



Hah. Mexico, Ventanas in Durango {Ildgc). Three 

 examples, males. 



Notwithstanding its elongate slender form, the species, 

 by the longitudinal elevations of the thoracic disk, be- 

 longs to the genus Acyphoderes. 



Charisia nifierrima, n. sp. (PL VI., fig. 8, ? ). 

 C. harbicro (Kirby) brevior et latior, tota nigra, subtus polita. 

 Caput sparsim griseo-pubescens, grosse punctatum. Thorax valde 

 transversus, in medio transversim densissime nigro-pilosus, postice 

 Rubnudus ibique callo mediano polito. Elytra brevia, triangularia, 

 humeris et apice aspernme punctatis, intus densissime nigro- 

 pilosa, lateribus versus apicem elevatis politis ibique disco concavo. 

 Pectus, femora omnia tibiaeque 2 posticae dense nigro-pilosae, has 

 longius ct densius extus versus apicem pilosac. Long. 11 millim., 5 . 



