86 



Thorax small, transverse, shorter and not broader than the head, widest before the 

 middle, closely and finely tubereulate, without impressions, sides much con- 

 tracted towards the base, moderately margined, basal margin nearly straight, 

 with the angles right angles. 



Scutellum large, triangular, closely asperate. 



Elytra elongate-oval, narrow, more than one-half longer but scarcely broader than 

 the head and thorax, widest beyond the middle, finely and closely asperated in 

 transverse rows, sides faintly rounded, apex broad and rounded. 



Abdomen with the pygidium exposed, flavescent. 



I. "is long and slender, yellow. 



Under parts entirely flavescent. 



Differs from P.foveolatum in its larger size, broader form, plain thorax, and deeper 

 general sculpture ; and from all others in its narrow elongate form and small 

 size. 



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



Ptilium tropicum. 



P. tropicum, Matthews, Trans. Am. Ent. Soc. xi. p. 144, 1884 ; Biol. Cent.-Amer. 

 Col. ii. pt. i. p. 147, pi. iii. fig. 23, 1888. 



L. c. ^ lin. = - 63 mm. — Elongatum, modice convexum, baud nitidum, rufo- 

 testaceum, pilis flavis dense vestitum ; capite magno, antice prominenti, confertim 

 et leviter tuberculato ; oculis magnis, prominentibus ; pronoto parvo, transverso, 

 capite angustiori, baud longiori, ante medium latissimo, postice fortiter contracto, 

 confertim et leviter tuberculato, lateribus modice marginatis, margine basali fere 

 recta, angulis fere rectis ; elytris ovalibus, elongatis, capite atque pronoto plusquam 

 sesqui longioribus, parum latioribus, ordinibus transversis leviter sed confertim 

 asperatis, apicibus latis, rotundatis; abdominis pygidio solo exserto ; pedibus 

 longis, gracilibus, flavis ; antennis sat brevibus, lajte flavis. 



Body elongate, moderately convex, not shining, rufo-testaceous, thickly clothed with 



yellow hair. 

 Head large, prominent in front, closely but not deeply tubereulate ; eyes large and 



prominent; antennae rather short, robust, bright yellow. 

 Thorax small, transverse, narrower and not longer than the head, widest before the 



middle, strongly contracted posteriorly, closely but not deeply tubereulate ; 



sides moderately margined, basal margin nearly straight, with the angles 



nearly right angles 

 Scutellum large, triangular, closely asperated. 

 Elytra elongate-oval, more than one-half longer but broader than the head and 



thorax, widest beyond the middle, lightly but closely asperated in transverse 



rows, extremities broad and rounded. 

 Abdomen with the pygidium only exposed. 

 Lei/x long and slender, yellow. 

 / r nder parts entirely testaceous. 

 Differs from P.foveolatum in its larger size, broader form, thorax not foveolate, and 



rather deeper sculpture; from /'. planum in its shorter and broader form, and 



short and very robust antenna. 



Habitat, Central America. Found by Mr. Champion at Bugaba in Panama. 



Ptilium Simsoni. 



P. Simsoni, Matthews, Cist. Ent. ii. p. 327, 1878. 



L. c. fe j fc lin. = 0"63-0"75 mm. — Oblongo-ovale, bete castaneum, nitidum, 

 pilis aureis vestitum ; capite sat magno, foveis umbilicatis, interstitiisque nitidis, 



