1917] HololeptincB of the United States 397 



Iliotona cacti Lee. Ann. Lye. Nat. Hist. N. Y., V. p. 162. 1S51. 



Mars. Mon., p. 400, t. 10, f. 5, 1S57. 



Horn. Pro. Phil. Soe., p. 275. 1873. 

 Oblong, parallel. Front with two shallow impressions which may 

 contain striae, or be punctured; supraorbital stria long. Pronotum 

 bisinuate at base with a median longitudinal stria extending two-thirds 

 from base towards apex. Lateral margin of pronotum punctate. 

 Marginal stria interrupted at middle by the lateral punctures on the 

 margin itself in a small flattened area, at the interruption of the mar- 

 ginal stria, a single puncture. Elytra bistriate, the first dorsal short, not 

 reaching the middle, second entire, subhumeral moderately deep, 

 abbreviated at base. Inflexed portion of elytra rugose. Pygidium 

 shining on disk, opaque in a band along apex. Coarsely punctate at 

 sides, finely or not at all on disk. Pygidium opaque, finely, rather 

 densely punctate, the apical portion higher, shining and impunctate, 

 thus giving a margined appearance to the pygidium. 



■ Men turn coarsely punctured, triangularly emarginate, with an 

 elevated line extending from the hind angles to the middle or the 

 emargination on each side. Prosternum elevated, narrow, broadened 

 at base, terminating acutely at apex. Length 4.5-7.5 mm. 



Variants. This species is very variable in the secondary 

 sexual characters. Mexican specimens have the fossa of the 

 male as a single deep pit, and the disk of the propygidium in 

 both sexes impunctate and are without 'frontal striae, the place of 

 which is taken by punctures. These specimens are also much 

 larger than the types. 



Texas specimens in my collection have the fossa of the male 

 divided into two parts, the disk of the propygidium is punctate, 

 and the frontal striae are replaced by punctures. 



The Leconte types from San Diego have the fossa single as in 

 the Mexican form, the propygidium is punctate on the disk, and 

 the frontal strise are well marked, though short and widely 

 separated. 



Distribution, Mexico, Texas, and Southern California. 



Iliotona beyeri Schseffer. Ent. News, p. 302. 1917. 



Elongate. Head sparsely rather coarsely punctate, a few finer 

 punctures intermixed, preocular spine short, indistinct, supraorbital 

 stria distinct. Mandibles elongate, feebly curved at apex, suddenly 

 dilated on the inner side at the basal third, above the dilation, a single 

 obtuse tooth. Pronotum with an impressed median line extending 

 two-thirds from base to apex; marginal stria entire; at the sides 

 slightly below apical third, a deep sinuate transverse groove, above this 



