180 ALLCEODROMUS. 



striis impunctatis , interstitiis latis , depressis , basin versus 

 curvatis. Pedes anteriores et mediani normales ; postici valde 

 elongati, difiFormes, feruoribus clavatis et pedunculatis, 

 apicem elytrorum superantibus , pedunculo gracili , recurvo , 

 clava postice obtuse subacurainata ; tibiis brevissimis, sub- 

 patellaeforraibus , apice intus deutatis ; metatarso longis- 

 sirao , paulo breviore quam femore , lato , valde robusto , 

 lobo unciformi erecto , introrsnm posticeque curvato basi 

 instructo ; deinde longitudinaliter lateque excavato , excava- 

 tionis margiiie externo profunda incisura a lobo prsedicto 

 separato , basi subdentato et intus curvato , margine interno 

 ciliato, apicem versus intus levissime inclinato: tarsorum 

 articulo 2° compresso , longiore quam 3°, a latere viso, 

 basi dentato ; articulo unguifero gracili. Processus prosterni 

 intercoxalis basi leviter impressus, deinde valde angustatus ; 

 metasternum convexum , obsolete in medio canaliculatum ; 

 segmenta duo abdominis basalia brevia, convexa, vestigio 

 suturae in medio obsoleto, lateribus distincto. 



The very interesting structure of the hind feet of this 

 insect renders it one of the most singular of the entire 

 subfamily. It is allied to Calodromus Guer. but chiefly dif- 

 ferent by a distinct neck, by the shape of the prothorax 

 and of the posterior feet. The hind tibia of Alloeodromus 

 is reduced, as in Calodromus Guer., to a very short thick 

 mass , whilst the l^t joint of the tarsus (metatarsus) is 

 very long. In Calodromus the metatarsus is nearly as long 

 as the entire body, dilated and deeply excavated inwardly 

 at the base, thence straight, with an erect spine at the 

 upper side before the middle , and the apex produced beyond 

 the insertion of the other joints of the tarsus; in Alloeo- 

 dromus the metatarsus is a little shorter than the hind 

 thigh , more robust, with a broad , deep , longitudinal furrow 

 above, and an erect lobe, obtusely pointed behind and 

 curved inwards, at the base. 



Alloeodromus insignis, ü. sp. 

 Elongatug, angustus, glaber, rufo-testaceus , nitidus, 



Notes from tlie Leyden ]VIu.seuiii , Vol. XVI. 



