212 Universitij of California Publications. [Entomology 



Division 3. Pilophoraria Eeut. 



Head with eyes little wider than anterior margin of pronotum ; sides of 

 pronotum not arcuated; body not constricted at the middle; upper 



surface ornamented with dots of silvery hairs 



1. Heterocordylus Fieb. 



Head much wider than anterior margin of pronotum; sides of pronotum 

 arcuate; body constricted at the middle; elytra sometimes with 



transverse lines of silvery hairs 1 



1. Second antennal joint distinctly clavate; body constricted at the 

 middle; elytra usually ornamented with transverse lines of pale 

 scale-like hairs 2. Pilophorus Hahn. 



— Second antennal joint almost linear; body scarcely constricted at the 



middle; elytra without transverse lines of scale-like hairs 



3. Alepidia Eeut. 



Division 4. Ceratocapsaria n.n. 

 Pronotum anterior to the middle nearly cylindrical, then rather abruptly 



flaring to the humeri; elytra sparsely clothed with long hairs 



1. Pamilia Uhl. 



Pronotum regularly narrowing anteriorly, its sides not constricted at the 



middle 1 



1. Elytra parallel; head vertical 2. Tiryas Kirk 



— Elytra wdth eosta more or less arcuate; head obviously oblique 



3, Ceratocapsus Eeut. 



Division 5. Lopidearia n.n. 

 Vertex prominent, convex, its base strongly carinate across its whole 

 width; anterior edge of pronotum not elevated. ...3. Hadronema Uhl. 

 Base of vertex carinate only at the middle, carina not reaching the eye, 



anterior margin of pronotum elevated 1 



1. Basal two joints of antennae incrassate, the second narrowed toward 

 its apex and sometimes flattened in males 1. Lomatopleura Eeut. 



— Second antennal joint linear or nearly so 2. Lopidea Uhl. 



Division 6. Orthotylaria Douglas and Scott 

 Pronotum constricted behind callosities, constriction continued over the 



sides, body elongated 1 



Pronotal stricture if present not continued over the sides 2 



1. Posterior coxae distant; basal joint of antennae a little longer than 



head; pronotum with a collar-like constriction 



1. Pseudoxenetus Dist. 



— Posterior coxae contiguous; basal joint of antennae short, scarcely 



surpassing clypeus 2. Globiceps Fieb. 



2. Eyes placed near or before the middle of sides of head 3 



— Eyes placed on hind margin of head, vertex not continuing around 



behind the eyes 4 



3. Head a little triangularly produced before the eyes; vertex and front 



together convex, base of the former rounded over and not at all 

 carinate; elytra parallel; membrane biareolate....3. Paraproba Dist. 



