BUPRESTIDAE. 193 



Elytra entirely covering the abdomen; epiplcurge distinct. 



Abdomen with live ventral segments, not connate, though 

 closely connected. 



Anterior and middle coxre small, rounded, not prominent, 

 without trochantins, the anterior ones received in cavities 

 formed bj the pro- and mesosternum ; posterior coxae trans- 

 verse, contiguous, dilated into a plate partly covering the 

 thighs. 



Legs short, contractile ; tibige slender, with indistinct 

 spurs; tarsi short, 5-jointed, joints l-i furnished beneath 

 with long membranous lol)es; claws simple, onychium none. 



This family contains only a few small species belonging to three 

 genera, representing different tribes ; they are found on flowers, 

 and have been classed with Eucneminse by sotne recent authors, 

 although the totally different construction of the anterior coxal 

 cavities at once separates them. They do not possess the power 

 of leaping, like most species of the preceding family, and the fixity 

 of the prothorax on the trunk would show that any such act is 

 mechanically impossible. 



No tarsal grooves. Antennse serrate, tlieir cavities sli^rt, straight. 



Drapetes. 

 Tarsal grooves in metasternnm. Antennje with a 3-jointed club, cavities 



long, arcuate. Throscus. 



Tarsal grooves in metasternum and abdomen. Antennte slightlv fusiibrni, 



cavities long, arcuate. Pactopus. 



The name Trixagua Kugellann has priority over Tliroscus, but 

 being applied to a genus composed of the one now under con- 

 sideration and Byturus, it must be dropped for both. Pactopus 

 Lee. is found in California : the other two genera occur on both 

 sides of the continent. 



Fam. XLIII.— BUPRESTIDAE. 



Mentnm moderate, subquadrate, or triangular, sometimes 

 transverse, the anterior part in many genera membranous: 

 ligula frequently not prominent; labial palpi short, 3-jointed. 



Maxilla3 exposed at the base, with ciliate, unarmed lobes; 

 palpi short, 4:-jointed. 



Antennae inserted upon the front, 11-jointed, serrate 

 (flabellate in Xenorhipis 'S), the outer joints usually fur- 

 13 



