,EU(: STORE BEETLES. ^ ( ' 



(c Two outer joints of anteuuae normally separated; front coxae con- 

 tiguous ; hiud coxal plates narrow and parallel ; mesosternum 

 strongly elevated into a central keel whicli is horizontal and at- 

 tains the level of the metasternum. Theca. 

 aa. Front 0(.x;e not exi)aucled into apical plates, entirely shut in in repose; 

 trochanter joined to the apex of the coxa. 

 d. Front eox;e contiguous or nearly so: head impressed or excavated be- 

 neath tor the antennaj. 

 c. Punctures of elytra confused, not in rows; metasternum not lobed 

 in front; epipleuraj without small pits for the reception of hind 

 knees ; antennie 10-jointed. XIV. Catorama. 

 K . I'lmcturfS of elytra in rows ; metasternum apparently broadly lobed 

 in front, on account of deep and narrow excavations for middle 

 tarsi ; epipleurfe with small pits for the hind knees ; antennae 9- 

 or 11-jointed ; pubescence more or less bristly. XV. Pbotheca. 

 dd. Front eoxee widely separated, antennse received between them. 



/. Prosterniun produced behind into two long, slender, horn-like proc- 

 esses; antennie 10-jointed; form oval, moderately elongate. 



XYI. DOBCATOMA. 



//. Prostemum truncate and emarginate behind; antennie S-, 9- or 10- 

 jointed. 

 g. Eyes minutely emarginate ; elytra without sti'ia; on the disk ; 

 form broadly oval. XVII. Euttlistts. 



Oi/. Eyes deeply and acutely incised, the notch extending to or be- 

 yond the middle ; form nearly globose. XVIII. C-ENOCAEA. 



XII. Petaijum Lee. 1^61, (Gr., "a leaf.") 



Small, parallel more or less elongate, rather strongly convex 

 species, having the antennte 11-jointed, about one-third the length 

 of body, joints 9 to 11 together as long or slightly longer than all 

 preceding ; thorax as ■ndde as elytra and with a short curved, deeply 

 impressed line on sides behind the front angles ; strongly excavated 

 beneath for the reception of the head: prostemum short, front 

 coy a? widely separated; second ventral S'^gment as long as the three 

 following united. 



KEY TO II«DIA1«"A SPECIES OF PETAUTJil. 



0. Punctures of elytral rows strong, close-set and distinct quite to apex, 

 the two lateral rows not much deeper than those on disk. 



1665. SEBIATTTM. 



aa. Punctures of elytral strife finer, less close-set and becoming nearly obso- 

 lete on apical third, the two lateral rows conspicuously deeper. 



1666. BISTBIATt'M. 



1665 ( ). Petaliim seeiattm Fall. Trans. Amer. Ent. Srir-.. XXXI. 



1905. 215. 

 Moderately elongate. Brown, distinctly though sparsely pubescent. Head 

 and thorax densely punctate throughout ; the latter with disk a little promi- 

 nent, with well-defined oblique impressions each side, Its front margin 



