102 



Ptenidium Caseiianum. 



P. Caseiianum, Matthews, Ann. Mag. Nat. Hist. 6, iii. 1889, p. 194. 



L. c. ,';, lin. = 0*75 mm. — Angustum, elongatum, modice convexum, sat pro- 

 funde puiictatum, nitidissimum, pilis griseis vestituin, Digram, apice elytrorum 

 rufo-piceo ; capite magno, punctis sat magnis remote impresso, antice elongato, 

 nigro, labro rufo-piceo ; oeulis modicia ; pronoto sat parvo, capite latiori, baud 

 longiori, ante basim latissimo, punctis sat magnis remote impresso, interstitiis 

 glabris, nitidis, foveis quatuor basalibus minutis, inconspicuis, lateribus rotundatis, 

 vix marginatis, margiue basali fere recta, angulis rotundatis ; elytris longis, 

 angustis, capite atque pronoto parum angustioribus, plus quam sesqui longioribus, 

 atque profundius et magis confertim punctatis, ante media latissimis, interstitiis 

 leviter reticulatis, lateribus marginatis et leviter rotundatis, apice angusto, rufo- 

 piceo ; pedibus modicis, la;te Mavis ; antennis atque palpis obscure tiavis. 



Body long and narrow, moderately convex, rather deeply punctured, very shining, 

 clothed with grey hairs, black, with the apex of the elytra rufo-piceous. 



Head large, remotely marked with rather large punctures, labrum rufo-piceous ; 

 eyes moderate ; antennse and palpi dusky yellow. 



Thorax rather small, broader, but not longer than the head, widest before the base, 

 remotely marked with large punctures, the interstices smooth and shining, the 

 four basal fovea; minute and inconspicuous, sides rounded and faintly margined, 

 basal margin nearly straight, with the angles rounded. 



Scutellum moderate, triangular. 



Elytra long and narrow, rather narrower and more than one half longer than the 

 head and thorax, and more deeply and more closely punctured, widest before 

 the middle, the interstices faintly reticulated, sides margined and slightly 

 rounded, apex narrow, rufo-piceous. 



Legs moderate, bright yellow. 



Under jyarts black. 



Differs from other species in its small size, long and narrow form, and especially in 

 sculpture. 



Habitat, North America. Found in California by Mr. Casey. 



Ptenidium attenuatum. 



P. attenuatum, Matthews, Ann. Mag. Nat. Hist. 0, iii. 1889, p. 194. 



L. c. T 6 C lin. 0'75 mm. — Elongatum, valde angustatum, convexum, nitidissi- 

 mum, pilis brevibus, flavescentibus, sparse vestituin, obscure castaneum, foveis 

 basalibus pronoti permagnis ; capite magno, antice producto, indistincte punctato ; 

 oeulis magnis, sat prominentibus ; pronoto lato, capite longiori atque latiori, ante 

 medium latissimo, indistincte punctato, foveis basalibus permagnis et profundis, 

 lateribus leviter marginatis, margins basali fere recta, angulis sat obtusis ; elytris 

 valde angustatis, capite atque pronoto plus quam sesqui longioribus, baud latioribus, 

 prope huraeros latissimis, striis valde remotis minute punctatis, interstitiis alutaceis, 

 castaneis, dimidio apicali llavescenti, apice attenuato, lateribus leviter marginatis ; 

 pedibus atque antennis longis, flavis. 



Body elongate, very narrow, convex and very shining, castaneous, sparingly clothed 



with yellow hair, thoracic fovea; very large and deep. 

 Head large, produced in front, indistinctly punctured; eyes large and rather 



prominent ; antenna long and slender, yellow. 

 Thorax broad, longer and broader that the head, widest before the middle, indis- 



dinctly punctured, basal fovea; very large and deep, sides faintly margined, 



basal margin nearly straight, with the angles rather obtuse. 



