24 ALURNUS. 



Thorojc trausvei"sus, apice cmarginatus, lateribus clilatatis, reflexo- 



marginatis. 

 ScutcUum .subpcntagonum, apice acuto. 

 Eli/tra thoracc latiora, quadrato-oblonga, siibdeprcssa, apice obtuse 



rotundata. 

 Pedes breves, gracilos, femoribus \ix inci'assatis, tibiis rectis, tarsis 



articiilo piimo obconico, secundo triangiilari, sat angiilato- 



emarginato, tortio elongato-triaugiilari, fere ad basiu emar- 



ginato, ungue robusto. 

 Corpus late oblongum, subdepressum. 



The flabellatc auteima; render this genus one of the most remark- 

 able in the whole group. 



1. Octocladiscus fasciatus (Guer.). Tab, IV. Fig. 7. 



Caloclada fasciata, Guer, Icon, du Regne Atiim. Texte, p. 284. 

 Octocladiscus flabellatus, Tliomps, Rev. et Mag. de Zool, 1856, pi. 24. 

 fig. 6. 



0. satis oblougus, subdepressus, nitido-fulvus ; antennis (articuHs 

 basalibus tiibus cxceptis) elytrisque nigris, his prope vitta medium 

 obliqiui fidva. 



Long. Ar-h lin. 



Var. A. Elytris totis nigris. 



Caloclada llabellata, Guer. Icon, du Rhjne Anim. Texte, p. 284. 



Hah. Cayenne. 



A single specimen, formerly in M. Buquet's cabinet, is now in the 

 collection of J. Thompson, Esq., Paris. 



Genus VIII. ALURNUS, Fabr. Details, Tab. I. Fig. 8. 



Fabr. Mit. Si/st. ii. p. 51. no. 54. 

 D'Orhigny, Did. (Tllist. Nat. i. p. 314. 

 Bhiiich. Hist, dcs Ins. ii. p. 181. 

 Hispae pars, Oliv. Ent. vi. p. 757. 



Antennce (fig. 8 a) corporis dimidio breviores, robusta?, apice attenu- 

 ata?, articulo prime incrassato, secundo brc\d, tertio plus minusve 

 elongate, cajtoris sequaUbus aut longitudine decrescontibus, ul- 

 timo subacute. 



Lahrum (fig. 8 6) parvum, transversum. 



Mandihuhc (fig. 8 c) magnse, bidentatsD, dente secundo parvo, fere 

 obsolete. 



Palpi maxiUures (fig. 8 d) articulo primo minuto, duobus proximis 

 clavatis, ultimo ovate ; lahiales (fig. 8 e) articulo primo minuto, 

 secundo clavato, idtirao obovato vel subelavato. 



Mentum (fig. 8/) breve, trans\-ersum, antice angulatum, ligula 

 intime oonnectuni, sa^pe ab ca tegre distinguendum ; lifjtda 



