ino 



towards the base, strongly margined, basal margin straight with the angles 



rather acute. 

 Scutellum large, triangular, smooth and impunctate. 

 Elytra small, ovate, attenuated in front and behind, much narrower and scarcely 



longer than the head and thorax, widest before the middle, marked with minute 



and very remote punctures, sides margined, extremities obtusely rounded. 

 Abdomen not exposed. 

 Legs robust, bright yellow. 

 / ?nder parts black, very shining, metasternum indistinctly punctured, mouth and 



coxa' bright yellow. 

 Differs from others in its small size, large head and thorax, small elytra, almost 



impunctate surface, shining black colour, large and very bright yellow antenna? 



and legs. 



Habitat, America. Found rarely by Mr. Smith in the West Indian Islands of 

 Grenada and St. Vincent. 



Ptenidium ignobile. 



P. ignobile, Matthews, Trans. Am. Ent. Soc. xi. p. 149, 1884 ; Biol. Cent.-Amer. 



Col. ii. pt. i. p. 151, 1888. 



L. c. -fa liq. = 0'63 mm. — Ovale, sat elongatum, piceo-nigrum, glabrum, niti- 

 dissimum, pronoti foveis basalibus magnis et profundis ; capite magno, antice sat 

 producto, impunctato ; oculis magnis, promineutibus ; j>r<>n<iht modico, capite parum 

 latiori, vix longiori, prope medium latissimo, glabro, nitidissimo, foveis quatuor 

 •magnis et profundis, equidistantibus, prope basim impresso, lateribus modice rotun- 

 datis et marginatis, margine basali recta, angulis obtusis ; elytris ovalibus, capite 

 atque pronoto longioribus, hand latioribus, ante media latissimis, impunctatis, 

 nitidis, postice sat attenuates, lateribus ovaliter rotundatis, leviter marginatiB, apice 

 dilution; pedibus atque antennis sat longis, bete flavis. 



Body oval, rather elongate, nigro-piceous, smooth and very shining, with the 

 thoracic fove;e large and very deep. 



Head large, rather produced in front, impunctate; eyes large and prominent; 

 antennae rather long, bright yellow. 



Thorax moderate, subquadrate, rather broader but not longer than the head, wid< si 

 near the middle, smooth and very shining, with four large and very deep equi- 

 distant fovea' near tin: base, Mile-, slightly rounded ami slightly margined, 

 basal margin straight with the angles obtuse. 



ScuteUum large, triangular, with four small foveas at the base. 



Elytra oval, rather narrow, longer but not broader than the head and thorax, 

 widest before the middle, impunctate and shining, rather attenuated posteriorly, 

 sides ovally rounded and slightly margined, apex paler. 



Legs rather long, bright yellow. 



Under jxirts piceous, with the mouth, coxa 1 , and apex of the venter yellow. 



Differs from other species in its small size, narrow form, large and deep thoracic 

 fovea, and smooth impunctate surface. 



Habitat, Central America Found in Guatemala, near the city, by Mr. Champion. 



Ptenidium impunctatum. 



/'. impunctatum, Matthews, Trans. Am. Ent. Soc. xi. p. 150, 1884; Biol. Cent.- 

 Amer. Col. ii. pt. i. p. 152, 1888. 



L. c. j fo - Jg lin. = - 75-0 - 87 mm.— Elongato-oblongum, piceum, valde con- 

 vexum, nitidissimum, omnino impunctatum ; capite magno, lato ; oculis sat magnis 



