81 



inconspicuous ; epimera moderate, enclosing the coxal cavities behind ; coxal 

 cavities moderate, oval, partly open in front. 

 Pectus with the mesusternum (PI. II., A, tig. 2, d) moderate, excavated anteriorly ; 

 epistcrna long and narrow ; epimera moderate, humeral, not reaching the coxal 

 cavities ; coxal cavities rounded, rather distant. 

 7)ietasternum (PI. II., A, IJg. 2, g) moderate, transverse, not extending to the sides 

 of the bod}-, with the posterior margin between the coxae straight; epi-terua 

 rather large, narrowed posteriorly, as long as the metasternum ; epimera 

 narrow, with their apical extremities iutiexed beyond the episterna, their other 

 parts concealed by the epipleural fold of the elj-tra. 

 Venter composed of six segments, with the basal segment long and large, the rest 



short, equal to each other in length, the apical entire. 

 Legs anterior with the coxa3 rounded; trochanters small, elongate and conical; 

 femora simple ; tibia! slightly dilated and setose towards the apex ; tarsi four- 

 jointed, 1 and 2 equal ; 3 small ; 4 elongate and slender ; claws strong, much 

 curved, and obtusely denticulate on the under side of the base. 

 intermediate rather longer than the anterior, with the femora robust, and the first 

 joint of the tarsi elongate, the second short and deeply bifid, in other respects 

 like the anterior. 

 posterior like the intermediate. 



Cojca anterior not contingent, rather prominent. 

 intermediate moderately distant. 

 posterior widely distant, ovate, not reaching to the sides of the body. 



Except its ten-jointed antennje this genus possesses no structural character by 

 which it may be distinguished from Sacium. In many species of Arthrolips the 

 antennae are very small and short ; this fact, combined with the close manner in 

 wbicb they are concealed in the cavity of the prothorax, renders the operation of 

 extending the antennje both difficult and hazardous, and when they have been 

 extended, or more generally broken off, the articulations of the funiculus cannot be 

 correctly counted without the help of a very high magnifying power, so that it 

 cannot be a matter of surprise that its species have often been placed in the 

 preceding genus. 



SPEC IE RUM EPITOMA. 



Forma latissima, subovata. 



L. c. I'oO mm. — Ovatus, latissimus, profunda punctatus, ped. atqne 



ant. flavis rotundatus. 



L. c. 1-40 mm. — Subovalis, latus, convexus, miuutissime punctatus, 



laste flavus, ped. atque ant. Imte flavis ..... elegans. 



Forma obloxga, aut ovalis, adt ovata. 



ElVTRIS VARIEGATIS. 



L. e. 1'45 mm. — Elongato-ovalis, convexus, sat profunda punctatus, 

 nigro-piceus, pronoto atque dimidio apicali elytrorum Iste rufls, 

 ped. atque ant. liete rufis ........ Lewisii. 



L. c. 1-37 mm. — Late ovalis, profunda puuctatus, castaneus, pronoto 

 atque vitta suffusa in eljtro utroque rufis, ped. atque aut. Ifete 

 flavis sufiFusus. 



L. c. 1'2.5 mm. — Late ovalis, leviter punctatus, piceus, pronoto antiee 

 rufesceuti, macula magni ovali late rufa in elytro utroque 

 notatus, ped. atque ant. flavis ....... bimaculatus. 



M 



