22 



Ptinella pellucida. 



/'. pellucida, Matthews, Trans. Am. Ent. Boc. xi. p. 117, 1884 : Biol. Cent.-Amer. 



Col. ii. pt. i. p. 129, 1888. 



L. c ,■";. lin. = 0*68 mm. — Sat lata, et sat depressa, nitidola, pilis pallidis 



i. maribus Isete flava, foemineis castanea; nijiit,- permagno, antice pro- 



ducto, confertim tuberculato; oculis fceminarum magnis, prominentibus, nigris; 



pronoto parvo; transverso, capite multo breviori, haud Latiori, prope medium 



simo, tuberculis sat magnis, ordinibus transversis dispositis, interatitiiaque 

 Bat profunda reticulatis, ornato, lateribua eat late marginatis, antice valde 

 rotundatis, postice contractis, depresaione longitudinal] in disco notato, margine 

 basali fere recta, angulia rectia; elytris brevibus, capite atque pronoto nee lon- 

 gioribua, neque latioribus, ad apicea latissimis, ordinibus transversis, fere rectis, 

 profunde asperatia, lateribua rectis et marginatis, apicibus lati88imia, valde rotun- 

 datis; abdomine sat lato, apicem ver8ua aeuminato, segmentis quinque apertia ; 

 pedibus atque antennis robustis, sat longis, flavis. 



Body rather broad and rather depressed, moderately shining, clothed with pale 

 hair, bright yellow in the males, and castaneous in the females. 



Head very large, produced in front, closely tuberculate ; eyes in the females large 

 and prominent, black; antenna' rather long, robust, yellow. 



Thorax small, transverse, much shorter and not broadt c than the head, widest near 

 the middle, ornamented with rather large tubercles in transverse rows; inter- 

 stices rather deeply reticulated, with a longitudinal depression on the disc, 

 -ides much rounded anteriorly and contracted towards the base, basal margin 

 nearly atraight, with the anglea right angles. 



Scutellum large, triangular, deeply asperated. 



Elytra short, not longer or broader than the head and thorax, widest at the apex, 

 deeply asperated in nearly straight, transverse rows, sides straight and mar- 

 gined, extremities very broad and much rounded. In the females the wings 

 are seen as black vitta . 



Abdomen rather broad, obtuse, acuminate at the apex, with five segments exposed. 



Legs yellow, rather long and robust. 



Undi r partt yellow. 



Differs from /'. flavidula in its much smaller size, shorter thorax, and deeper 

 sculpture; and from P. quercus in its larger size, more depressed form, and 

 much deeper sculpture. 



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



Ptinella rotundicollis. 



/'. rotundicollis, Motschulsky, Bull. Mosc. xli. 2, p. 185, 1868. 



L. c. vix ,',. hn. - 47 mm. — Elongata, Bat depreaaa, uitidula, confertim sed 

 leviter tuberculata, pilia brevissimis aureia vestita, pallida et translucide fiava, 

 abdominis basi castanea; capite permagno, antice rotundato, confertim tubercu- 

 lato; oculis maribus nullis; pronoto perbrevi, capite breviori, hand latiori, ad 

 medium latissimo, confertim et leviter tuberculato, give alutaceo, lateribua valde 

 rotundatia et leviter marginatis, margine basali fere recta, angulia valde obtusis ; 

 elytris capite atque pronoto parum Latioribus, baud longioribua, ad apicea latia- 

 Bimis, ordinibus tranaveraia remotis leviter asperatia, interstitiis alutaceis, lateribua 

 marginatis, vix rotundatis, apicibus latis, uiiniuie rotundatis ; abdomine aeuminato, 

 segmentis quinque plus minusve exsertis, leviter asperatia, Bive alutaceis; pedibus 

 modicis, pallide flavis; antennis robustis, pallide flavis. 



