158 LAMELLICOENIA. 



II. Clypeus (jprcecipue in 6 ) trapezoid alls ; corpore supra glahro, interdum hirto. 



3. Diplotaxis senea. 



Diplotaxys cenea, Blanch. Cat. Coll. Ent. i. p. 172 \ 

 Liogenys pauperata, Burm. Handb. der Ent. iv. 2, p. 16 2 . 



Hah. Mexico, Vera Cruz 1 2 , Capulalpam, Cordova, Silao, Cuernavaca (Salle), San 

 Juan del Rio, Esperanza, Pachuca in Hidalgo (Hbge), Guanajuato (Salle, Edge). 



Usually dark brassy-green or bluish in both sexes, with the antennae (except the club) 

 reddish ; but varieties occur (at Silao and Guanajuato) in which the elytra and legs 

 are more or less rufous, and the female in some cases wholly dull reddish-brown. The 

 brown variety of the female was cited by Burmeister as synonymous with D. simplex 

 (Blanch. 1. c. p. 172), but this appears doubtful. 



The clypeus is large, as in Section I.; but is trapezoidal and not quadrate in the male, 

 although the anterior angles are more acute owing to the sinuation of the front edge 

 and a slighter sinuation of the lateral margin near the angle. The sixth ventral seg- 

 ment is exposed in both sexes, and the male tarsi (especially the four anterior), though 

 not at all dilated, are fringed with hairs beneath, as correctly described by Burmeister. 

 The thorax is always finely and densely punctured; and the elytra a little more coarsely 

 and subrugosely punctured, but with the punctures distinct. 



4. Diplotaxis cribraticollis. 



Diplotaxys cribraticollis, Blanch. Cat. Coll. Ent. i. p. 171 \ 



Hah. Mexico \ Tepansacualco, Yolos, Guanajuato (Salle). 



According to the Salle collection, this is the largest of a small group of Mexican and 

 Guatemalan species, of uniform reddish-testaceous (sometimes a little darker) colour, 

 in which the males have a broad trapezoidal clypeus with prominent angles and sinuated 

 front edge ; the sides of the clypeus a little irregular and the surface concave and 

 more coarsely punctured than the forehead ; the thorax strongly rounded behind the 

 middle and narrowed thence to the head, with rounded hind angles ; and the tarsi in 

 the male fringed beneath with fine hair. 



The Salle specimens are 10-11 millim. long (Blanchard gives 10 millim.) ; the 

 fiat interstices between the geminated striae are not " laevibus " as Blanchard states, but 

 have a row of punctures ; and the anterior tibiae are not " bidentatis," but show a 

 distinct though small third upper tooth. If they really belong to Blanchard's species, 

 that author's description of the thorax as " dense subtiliterque punctato " is not very 

 fitting, as the punctures, though finer than those of the elytra, are tolerably widely 

 scattered over the surface. 



