262 SUPPLEMENT. 
pilosis; pedibus obscure castaneis, femoribus brevibus, clavatis et pedunculatis, apice inermibus, tibiis 
haud carinatis. 
‘Tong. 6 lin. ¢. 
Hab. Panama, Volcan de Chiriqui (Champion). 
One example only. 
The antenne are very long, about double the length of the body, and more equably 
filiform from the base to the apex than is usual in the genus, the joints 3-6 not being 
perceptibly thicker than 7-11, as in the genus Heterachthes and its allies. 
1(p). Ibidion integripenne. (‘I'ab. XVIII. fig. 14.) 
Elongato-lineare (capite thoraceque relative brevibus), piceo-nigrum vel castaneo-fuscum plus minusve seneo- 
tinctum ; elytris utrinque maculis discoidalibus rotundatis duabus (altera paullo ante, altera paullo post, 
medium) flavo-testaceis ; capite thoraceque plus minusve punctato-rugosis, hoe curto, cylindrico dorso 5- 
tuberculato; tuberibus antenniferis supra obtusis; antennis ¢ scapo gradatim incrassato, punctato- 
scabroso, antice integro, ¢ articulis 3°-8™ modice dilatato-compressis, linearibus nec carinatis, infra sparsim 
ciliatis ; elytris apice conjunctim rotundatis, dorso sparsim asperato-setifero-punctatis ; prosterno inter 
coxas angustissimo, coxis conico-exsertis ; femoribus sat abrupte clavatis, apice inermibus, tibiis haud 
carinatis. ° 
Variat:—1. Macula anteriori geminata. 2. Macula posteriori deficienti. 3. Maculis connexis et in vittam 
angustam usque fere ad apicem extensis. 
Long. 8-9 lin. 6 Q. 
Hab. Mexico, Cordova (Sallé), Almolonga, Jalapa (Hége). 
1(z). Ibidion latevittatum. (Tab. XVIII. fig. 18.) 
I. integripenni affine, differt solum elytris utrinque vitta lata ochracea a basi usque prope apicem extensa, 
antennis pedibusque fulvo-testaceis, capite et thorace fulvo-pubescentibus. 
Long. 4-7 lin. . 
Hab. Mexico, Chiapas (Sal/é). 
Belongs to the same group as J. integripenne [which includes J. ditelum, Bates, 
I. phoracanthoides, White, I. signaticolle, Thoms., and other species], and approaching 
in their narrow prosternum sunk beneath the much exserted fore coxe, the genus 
Eligmoderma. TI. latevittatum has a similar thorax (roughly sculptured with five 
dorsal tubercles) to I. integripenne ; the elytra also are relatively greatly elongated and 
entire at the apex, but the pale markings are widely different, the whole disc being 
occupied by an elongated ochreous stripe of broad but not quite regular width, leaving 
only the sutural, lateral, and apical margins (which around the apical part are very 
narrow) of the brassy chestnut-brown ground-colour. 
1(r). Ibidion bilineatum. (Tab. XVIII. fig. 19.) 
I, latevittato affine. Castaneo-rufum, subglabrum, subtiliter parce setosum, thorace antice gradatim angustato 
prope basin paullo constricto, disco haud tuberoso sparsim punctulato; elytris (2) quam thorax multo 
latioribus, apice brevissime truncatis, utrinque seriebus punctulorum tribus vittaque angusta recta flava 
a media basi usque ad suturam prope apicem extensa; corpore subtus rufo, glabro; vitta angusta laterali 
