( 410 ) 
inter medium et basin subdilatata, versus apicem rotundato-atte- 
nuata, basi truncata, humeris obtusis, subrotundatis, margine 
apicali in singulo elytro fortiter rotundato, in medio communiter 
exciso-emarginato, angulis apicalibus externis ideo rotundatis, 
internis tamen acutiuseulis; supra in transversum valde, in lon- 
gitudinem modice convexa, suturam seeus leviter impressa 
praecipue posterius; pallide ferrugineo-testacea, limbo laterali 
ad basin angustius, posterius latius piceo-nigro; subtilissime 
irregulariter punctulata, nitida, absque stria suturali; apice 
valde oblique truncata, obcordatim excavato-retusa; excavatione 
mox post medium elytrorum incipiente, sursum seu antrorsum 
attenuala, sensim in depressionem suturalem transiente; am- 
bitu elevato, acutiusculo, in utroque elytro denticulis 5 acutis, 
subaequalibus ornato; 1° seu superno prope suturam , 2° ab illo 
remoto posterius, 3° ante apicem; fundus excavationis crebre 
punctulatus, sutura in eo elevata; ad apicem pilis paucis ereeüs 
adspersa. Corpus subtus pallide testaceum, punetulatum. Pro- 
sternum margine antico vix reflexo. Pedes testacei ut in priore 
constructi. 
Patria : America borealis (Mexico). 
5. P. CHAPUISI, Kirsch. 
Elongatum, cylindricum, nigrum, nitidum, thorace elongato 
basi, elytris dorso pallide ferrugineo-testaceis, his subtilissime 
linealo-punctatis, apice obcordatim excavato-truncatis, excava- 
tione supra obtuse determinata, ambilu utrinque 5-denticulato, 
dente postico laterali. 
Long. 5 mm. 
Monarthrum Chapuisii, * Kirscx, Berl. ent. Zeil., 1866, p. 213; ibid., 1868, 
p. 214. — * Eicax., Berl. ent. Zeit., 1869, p. 299. 
P. laterali maxime simile et geminum, sed angustius, magis 
cylindrieum, longitudinaliter minus convexum, excavatione api- 
