382 Annals Entomological Society of America [Vol. X, 



specimens above mentioned to bractea, because of the recorded 

 variation in the punctation of the propygidium, and the fact 

 that in size and facies the specimen is populnea. 



The males may be distinguished by the notch in the anterior 

 angle of the thorax, and the greater excavation of mentum and 

 submentum. 



Reported by Lcconte (1851) under poplar bark; by Horn 

 (1873) between the layers of cotton- wood bark. 



Hololepta populnea var. punctata no v. 



More narrowly elongate than populnea, almost parallel. Front 

 without striffi, punctate with fine punctures, preocular tooth short 

 depressed. Mandibles shorter than headX 9 ) (cf )• Pronotum bisinuate 

 at base, with a slightly impressed median stria extending half way from 

 base" to apex; marginal stria entire not strongly impressed, slightly 

 sinuate behind middle, or interrupted; distinctly punctate with punc- 

 tures of same magnitude as those on front and mandibles. Elytra the 

 width of pronotum at base, narrowing sHghtly towards apex, bistriate, 

 the first stria short, about one-third the length of the elytra, second 

 half the length of the first, with an appendix in the apical third; sub- 

 humeral stria abbreviated at base and apex. Inflexed border of elytra 

 slightly ntgulose. Propygidium minutely, distantly punctulate on disk, 

 laterally bordered with sparse larger punctures, which are larger than 

 those of populnea, slightly bifoveolate apically. Mentum, gula and 

 presternum as in populnea. Length 4 mm. 



Arizona, one male and one female. W. M. Mann. Sexes 

 are differentiated as in populnea. 



Hololepta (Hololepta) excisa Mars. 



This species is recorded from the United States by Marseul. 

 I have seen no specimens taken in the United States, and do not 

 believe that this species occurs north of Mexico. It is reported 

 from Mexico(Marseul, Biologia), Costa Rica (Biologia), Vene- 

 zuela, New Granada, and Brazil (Marseul), I append an abstract 

 of Marseul's description. 



01)long; subdepressed, shining black. Front flat, without striae or tubercles. 

 Pronotum punctate laterally, marginal stria scarcely angulate, well marked. 

 The inflexed border of the elytra strongly rugose; subhumeral stria strong, rugose, 

 a little abbreviated at base; dorsal striae two, rudimentary. Propygidium 

 bordered with distant punctures. Pygidium densely and strongly punctate. 

 Anterior tibiae armed with four blunt teeth; posterior with three long spines. 



The males are characterised by the excavation of the mentum 

 and the notch in the anterior angle of the pronotum. 



