55 



Thorax moderate, red, ovally rounded, reflexed, and pellucid in front, minutely and 

 regularly punctured, interstices smooth and very shining, basal line faint, 

 basal margin sinuated, with the angles acute. 



Scutellum large, subtriangular, minutely punctured. 



Elytra black, with a blood-red fascia, interrupted in the middle of each elytron, 

 near the shoulders, and another, narrow and entire, near the apex, not broader, 

 but more than one-half longer than the thorax, widest at the shoulders, 

 minutely and regularly punctured, interstices smooth and very shining, 

 sutural stria moderate, sides margined, extremities red, narrow, and much 

 rounded. 



Abdomen moderately exsei"ted, rufescent. 



Legs robust, very bright yellow. 



Under parts piceous ; head, prothorax, and two last segments of the venter 

 flavescent. 



Differs from all others in the ornamental markings of its elytra, and from many in 

 the bare and brightly polished surface of its whole body, fine and regularly 

 distributed punctation, and in its robust and very bright yellow antennae. 



Habitat, Africa. Found in Madagascar ; received from Mr. Lewis. 



Sacium instabile, sp. n. 



L. c. 1%-y^ lin. = 1'12 — 1-36 mm. — Oblongo-ovale, convexum, nitidulum, pilis 

 aureis sat dense vestitum, punctis minutis confertim impressum, castaneum, fasciis 

 transversis undulatis duabus, aut maculis quatuor flavis in elytris ornatum ; capite 

 perparvo, testaceo, oculis nigris, antennis obscure flavis; pronoto modico, rufescentis, 

 disco plus minusve obscurato, antice ovaliter rotundato, modice reflexo, et late 

 translucido, ad basim latissimo, punctis minutis confertim impresso, interstitiis 

 glabris, nitidis, margine basali leviter sinuata, angulis fere rectis; elytris sat longis, 

 castaneis, fascia transversa, aut macula rotundat;i, prope humeros, atque fascia 

 altera fortiter undulata, aut macula rotundata, pone media, ornatis, fasciis atque 

 maculis flavis, ad suturum non extensis ; elytris pronoto plus quam sesqui 

 longioribus, vix latioribus, ad humeros latissimis, minute et confertim punctatis, 

 interstitiis glabris, stria suturali distincta, lateribus leviter rotundatis, apicibus 

 obtusis ; pedibus flavis. 



Body oblong-oval, convex, moderately shining, rather thickly covered with golden 

 hair, minutely and closely punctured, castaneous, ornamented on the elytra 

 with two transverse undulated yellow fascite, or four yellow spots of variable 

 size. 



Head very small, testaceous, eyes black, antennas short, dusky yellow. 



Thorax moderate, rufescent with the disc more or less dusky, ovally rounded, 

 moderately reflexed, and broadly translucid in front, widest at the base, 

 minutely and closely punctured with the interstices smooth and shining, basal 

 margin faintly sinuated, with the angles nearly right angles. 



Scutelhim moderate, rounded. 



Elytra rather long, more than one-half longer, but scarcely broader than the 

 thorax, widest at the shoulders, minutely and closely punctured with the 

 interstices smooth, castaneous, ornamented with a transverse yellow fascia or 

 a rounded spot near the shoulders, and another strongly undulated yellow 

 fascia, or a rounded spot beyond the middle on each elytron ; the fascife do not 

 extend to the suture, and, together with the spots, vary much in size in 

 different individuals, sutural stria distinct, sides faintly rounded, extremities 

 rounder and paler. 



Legs moderate, yellow. 



Under parts castaneous, pale or more or less dusky, metasternum deeply punctured. 



