10 NOKMAL COLEOriEliA. 



coxae glol)ular. When anterior coxae are conical the 

 tarsal joints are simple. Clnvicornia. 



E» Antennae elbowed and clubhed, the club being com- 

 posed of tln^ee or more plates attaelied to each other at 

 one end ; tarsi with five joints. Lamellicornia. 



F. Prosternum produced behind into a spine, fitting into a 

 cavity in front of mesosternmn ; antennae threadlike, 

 sawlike, or comblike (very rarely clubbed), anterior 

 coxae globular ; tarsi with five joints ; body generally 

 elongate elliptic, more or less pointed behind and hard. 



Stei'Tioxi. 



Cr. Body soft and flexible ; tarsi generally with five joints ; 

 antennae usually threadlike, sometimes sawlike or comb- 

 like, rarely clubbed, in which case tarsal joints are pro- 

 duced into a fleshy sole ; outer lobe of maxillae not 

 palpiform ; elytra not very short ; anterior coxae cylin- 

 drical or conico-cylindrical ; prosternum not produced 

 behind into a spine to fit into cavity of mesosternum ; 

 socket holes for anterior coxae open behind ; trochanters 

 not placed in axis of femora, or if so, anterior coxae, 

 conico-cylindrical, and abdomen, with six or seven 

 ventral segments. Malacoderma. 



II. Thorax hoodlike ; tarsi generally with five joints ; 

 antennae threadlike or cluljbed, not elbowed, the club com- 

 posed of separate joints ; prosternum not produced behind 

 into a spine to fit into cavity of mesosternum ; femora 

 inserted at or near apex of trochanters ; anterior coxae 

 cylindrical or globidar, their socket holes open behind ; 

 aljdomen with five ventral segments ; body more or less 

 cylindrical, liard. Teredilia. 



I. Tarsi with four joints, third joint generally bilobed ; 

 head nearly always more or less produced into a rostrum ; 

 antennae inserted in cavities (scrobes) on sides of rostrum, 

 almost always with a solid or compact club, and in most 

 cases elbowed ; socket holes for anterior coxae closed. 

 (Wlien the head shews only slight traces of a rostrum 

 either the antennae are elbowed and clubl)ed or they are 

 inserted in distinct scrobes). ]i]iynco2')hora^ 



K. Tarsi with four joints, third jcunt generally bilol)ed ; 

 head rarely sliglitly ])roduced in front; antennae usually 

 much shorter tlian l)ody, not inserted in scrobes and not 

 elbowed, generally threadlike, sometimes beadlike, saw- 



