57 



Head very small, long and narrow, yellow ; mouth very prominent ; eyes very 



small and prominent ; antennte moderate, bright yellow. 

 Thorax small, narrowed and slightly reflexed in front, minutely but distinctly 



punctured with the interstices shining, basal line rather deep, basal margin 



sinuated, with the angles nearly right angles. 

 ScufeUiim small and rounded, testaceous. 

 Elytra rather short, attenuated posteriorly, broader and nearly twice longer than 



the thorax, widest near the shoulders, closely and rather deeply punctured, 



sutural stria deep, extremities rounded. 

 Abdomen with the pygidium much exserted, flavescent. 

 Legs slender, bright yellow. 

 Under jxirts pale castaneous, or testaceous. 

 Differs from A. molUnus in its much larger size, longer thorax, finer and closer 



punctation, and in the marking of the elytra ; from S. lunatum in its narrower 



and attenuated form, finer sculpture, the markings of the elytra, and much 



smaller thorax. 

 Habitat, Central America. 



Sacium concinnum, sp. n. 



L. c. j% lin. = 1 mm. — Omnino ovale, valde convexum, uitidissimum, pilorum 

 expers, per totum profunde et confertim punctatum, piceo-castaneum, macula magna 

 flavescenti in elytro utroque notatum ; pronoto magno, antice ovaliter rotundato, 

 leviter reflexo, et minute pellucido, piceo-castaneo, supra caput solum flavo, 

 profunde et confertim punctato, interstitiis glabris, nitidissimis, lined basali modice 

 impressa, margine basali leviter sinuata, angulis fere rectis ; elytris brevibus, 

 pronoto parum longioribus, hand latioribus, ad humeros latissimis, piceo-castaneis, 

 macula magna, ovali, obliqua, flavescenti, in utroque pone media ornatis, profunde 

 et confertim punctatis, interstitiis glabris, nitidissimis, lateribus marginatis, 

 apicibus levissime rotundatis ; pygidio minime exserto, piceo ; pedibus modicis, 

 flavis ; anteunis longis, obscure flavescentibus. 



Body perfectly oval, very convex and very shining, without hair, deeply and closely 



punctured throughout, pitchy-castaneous with a large flavescent spot on each 



elytron. 

 Head moderate, yellow ; eyes moderate, black ; antennae rather long, dusky-yellow, 



with the seventh joint very slightly enlarged. 

 Thorax large, piceo-castaneous, ovally rounded and slightly reflexed in front, pellucid 



yellow over the head only, deeply and closely punctured with the interstices 



smooth and very shining, basal line moderate, basal margin slightly sinuated, 



with the angles nearly right angles. 

 Scutellum large, subtriangular, deeply punctured. 

 Elytra short, rather longer but not broader than the thorax, widest at the shoulders, 



piceo-castaneous with a large oblique, oval, flavescent spot on each beyond the 



middle, deeply and closely punctured with the interstices smooth and very 



shining, sides margined, extremities very little rounded. 

 Abdomen with the pygidium very little exposed, piceous. 

 Leys moderate, yellow. 



Under parts pale castaneous, rather deeply punctured througliout. 

 Differs from S.formosum in its much smaller size, deep sculpture, and indistinctly 



defined and differently shaped spot on the elytra ; and from other species in 



its minute size, and peculiar colour and sculpture. 

 Habitat, Asia. Found in Ceylon by Mr. Lewis. 



