390 Annals Entomological Society of America [Vol. X, 



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

 to apex by a series of more or less elongate punctures, second stria 

 entire, third punctifomi; subhumcral abbreviated at base and apex. 

 Inflexed portion of elytra slightly punctate in a short band immediately 

 inside the marginal ridge, otherwise smooth. Propygidium punctate 

 rather evenly, the punctures large on sides, smaller on disk and at 

 apex. Pygidium densely punctate. Mentum concave, faintly punctate. 

 Gula as in vidua. Prostemum as in vicina. Mesostemum sparsely 

 punctulate. Second, third and fourth ventral abdominal segments 

 punctate for their entire width. Second segment one-half the length 

 of the third. Length 6 mm. Type. 



Distribution, San Diego Co., Cal. (F. E. Blaisdell). 



This description is drawn from the type specimen kindly- 

 sent me by Mr. Blaisdell. The species is very close to vicina, 

 but is much more elongate and has a very different facies. 

 It differs from vicina in the sculpture of the ventral segments, 

 in the more convex pygidium and in the shortness of the elytra, 

 which causes the margin of the third dorsal abdominal segment 

 to be visible for its entire width. The type is, I believe, a male. 



Hololepta (Leionota) caseyi n. sp. 



Narrower and more elongate than vicina. Front bistriate; preocular 

 tooth moderateh' prominent; supraorbital stria short. Pronotum with 

 a narrow lateral band of punctures; median stria absent or very lightly 

 impressed; marginal stria as in t'zV/wa. Elytra as in wV/«a. Propygidium 

 coarsely and sparsely punctate, the punctures finer on disk and apex; 

 in a few specimens the disk is almost impunctate. Pygidium densely 

 punctate. Submentum without carinae and the cup shaped excavation 

 of vicina replaced by a Y-shaped groove. Prostemum broadly truncate, 

 its anterior margin narrowly elevate and rugulose (PI. VI, fig. 1). 

 Second, third and fourth ventral segments punctate at sides, impunctate 

 on disk. Length 4.5 mm. 



Holotype and six paratypes. Holotype labelled Arizona, 

 paratypes, Nogales, Arizona. 



Genus Iliotona gen. nov. 



More or less elongate, subdepressed. Head porrect, mandibles 

 subequal. Tibiae dentate, the anterior quadri posterior and intemiediate 

 tridentate. The two lower teeth of the intermediate and posterior tibiae 

 borne on separate processes, and all three teeth subequally spaced. 

 Prostemum carinate, terminating apically in. a sharp point. 



Key To Iliotona. 



Pygidium margined. Mandibles without teeth and not dilated at basal 



fourth. Thorax not grooved near side margin below apical third. . .cacti Lee. 



Pygidium unmargined. Mandibles suddenly dilated at basal fourth, with a 

 tooth above the dilation. Thorax near side margin slightly below apical 

 third, with a deep transverse groove beyeri Schaef. 



