106 



loiiR fictic, 2 larger than 1 ; 3 minute ; 4 elongate, robust : claws slender, 

 siifihtly curvttl, obtusely dentate beneath near the base. 



iiittrmtiliatc with tlie tibite stronf,'ly coniiircssed, ruuch dilated near the middle, 

 with the inner .side serrate, furiiisht-d with spines, and armed with a sinuated 

 spur at the apex ; tarsi short, very robust, with the basal joint long and stout, 

 second smaller, and the fourth very short, in other respects like the anterior. 



posterior like the intermediate, but longer. 

 Coxce anterior large, elongate, contingent, and prominent. 



intermediate rounded, and moderately distant. 



posterior moderate, rather narrow, widely separated, and extending almost to the 

 epimera. 



This genus is allied to Catoptyx, but may be readily distinguished by the 

 simple form of the front of its pronotum, and by the relative proportions of its 

 antenna', and various organs of the mouth. 



I have named it in honour of Mr. Geoi'ge Lewis, as a well-deserved record of 

 his successful researches among the insects of the present family, and those of the 

 Pxev(loeor]jlo])]ii(he, resulting in tlie discovery of live new genera, and many new 

 species. 



Lewisiiiiii at present contains two species, which may be distinguished, viz. : — 



Superficies glabrous ... ... Ceylonicum. 



,, strongly alutaceous ... ... ... Japonicum. 



Lewisium Ceylonicum, sp. n. 



L. c. jg lin. = 1"25 mm.— Subhemisphericum, postice.parum attenuatum, niti- 

 diesinium, confertim et profundissime punctatum, pronoti ad basim transverse 

 strigoso, aterrimum, pronoti atque elytrorum marginibus flavis ; pronoto aterrimo, 

 late davo-marginato, antice fere circulariter rotundato, reflexo et pellucido, profunde 

 punctato, inttrstitiis glabris, nitidis, basim versus oblique strigoso, margine basali 

 sinuata, angulis productis, acutissimis ; eli/tris pronoto duplo longioribus, vix lati- 

 oribus, prope humeros latissimis, profundissime punctatis, interstitiis glabris, 

 nitidis, stria suturali distincta, aterrimis, flavo-marginatis, lateribus late margi- 

 natis, apice sat attenuate ; pedibus tiavescentibus, femoribus piceis ; antenuis 

 longis, robustis, Isete flavis. 



]iodj/ subhemispheric, slightly attenuated jiosteriorlj*, verj' shining, closely and 



very deeply punctured, thorax transversely strigose near the base, deep black, 



with the margins of the thorax and elytra j'ellow. 

 //»■«(/ mixlcrate, ferruginous; ej'es large and verj- pi-omineut ; antenna? long, 



roliust, bright yellow. 

 ThoriLc dee)) black, with the margin yellow, almost circularly rounded, retiexed, 



and pellucid in front, deeplj' punctured, with the interstices smooth and 



shining, obliquely strigose near the base, basal margin sinuated, with the 



angles jiroduced and very acute. 

 ScuteUiivi short, subtriangular. 

 Elytra deep black, with yellow margine, twice longer, but scarcely broader than 



the thorax, widest near the shoulders, verj' deeply punctured, with the 



interstices smooth and shining, sutural stria distinct, sides broadly margined, 



apex slightly attenuated. 

 Lefls moderate, flavescent, with the femora piceous. 



I'lidcr purls piceous, head paler, metasternum and first ventral segment alutaceous. 

 Differs from L. Japotticinn in its smaller thorax, with the base deeply strigose, 



smooth and not alutaceous surface, and deep black colour margined with 



vellow. 



