

GO . [August, 



ACANTHODERES L^TIFICUS. 

 Oblongo-ovatus, niger, subnitidus, thorace elytrisque ad latera plagis mag n is 

 laciniatis fulvo-rufis cinereo-marginatis ; elytris juxta suturam cinereo-tessellatis, 

 dorso planatis, carinis longitudinalibus obtusis, apice longissime utrinque spinosis : 

 thorace tuberculis lateralibus et dorsalibus minime elevatis,his a linea dorsali punctis 

 plurimis separatis : antennis articulis 3 — 11 apice setis rigidis acuminatis, basi 

 griseis : corpore subtus pedibusque nigris, griseo- sericeis : mesostemo lato, bitubercu- 

 lato : tibiis anticis simplicibus. Long. 6 I in., ? . 



Ecuador (Buckley). 



An extremely pretty species, distinguished, besides its colours, by 

 the very long apical spine of the elytra and the scarcely prominent 

 thoracic tubercles. 



ACANTHODERES LUCTUOSUS. 



JElongatus, postice angustatus, supra albus, nigro-fasciatus et maculatus, subtus 

 niger, abdomine utrinque albo-vittato ; pedibus nigris, femorum tibiarumque basi rufis, 

 harum medio albo-annulato : tarsis nigris, posticis articulo primo basi griseo ; an- 

 tennis nigris, articulis 2 — 8 basi carneo-griseis : capite nigro, vitta lata mediana 

 (usque ad labrum extensa et medio nigra) alba : thorace vittis tribus nigris, tuberibus 

 validissimis : scutello nigro lateribus albis : elytris carinis dorsalibus valde elevatis 

 antice ad basin porrectis, apice recte sinuatim truncatis, angulis exterioribus paullo 

 productis, vittis nigris valde dentatis obliquis tribus, l ma ab humero valde obliqua 

 versus suturam, 2 nda post medium fere transversa, S ia prope apiceni; macula utrinque 

 medio basi, altera medio margine, nigris ; antennis articulis 8 — 11 abbreviatis, $ fere 

 ovatis et intus ciliatis ; tibiis anticis utroque sexu extus apice valde dilatatis. 



Long. 8—9 lin., $ ? . 

 Rio Janeiro, Brazil. 



This common Brazilian insect, known in collections under the 

 catalogue name here adopted, has, I believe, never been described. 



ACANTHODERES PUPILLATITS. 



A. luctuosae quoad formam simillimus, sed aliter coloratus. Pallide fusco- 



griseus, lituris albo-griseis plus minusve variegatus ; prothorace maculis rotundis 



quatuor, elytris utrinque septem, scutelloque medio, nigro-velutinis : femoribus tibiisque 



basi, tarsis articulo unguiculari, antennarum articulis 3 — 9 basi, carneo-griseis ; 



tibiis griseo-annulatis, anticis simplicibus : antennis articulis apicalihus paullo 



abbreviatis, £ hand ovatis, intus dense ciliatis ; elytris humeris subfalcatis. 



Long. 7i — 10 lin., $ $ . 



Venezuela and New Granada. 



Also a well-known insect in collections, and not previously de- 

 scribed. I have adopted the name given to it in MS. by M. Chevrolat. 

 In form, and in the thoracic tubercles and prominent elytral carinas, 

 it agrees with A. luctuosus, and with the genus Discopus. The ciliation 

 of the apical joints of the antennae, and the dilatation of the anterior 

 tibiae are possessed in minor degree by the European A. varim. 



ACANTHODERES ABSTERSUS. 

 A. pupillato pro xime affinis et similis, sed differt colore dare griseo maculisque 

 nigris majoribus. Latior, dare griseus, opacus, thorace maculis quatuor, elytris 

 utrinque maculis sex majoribus (tribus marginalibus, duabus ante medium a carind 



