LITH0X0MA. 271 



Genus 42. LITHONOMA *. 



JRosenhauer ( TJiier. Andal. p. 335). 

 Checrolat (Orbiqn. Diet. Unirers. (FHist. Nat.). 

 Foudras, Hist. Nat. des Alticides (I860). 



Allard, Annates de la Soc. Entom. de France, serie 3. vol. viii. (1860) 

 p. 44. 



Labrum subsinuatum. 



Palpi maxillares elongati et robusti, art. 3 Wo dilatato. 



Palpi labiales attenuati, minuti. 



Antenisle rohestee, Jili formes, art. S tio tenui. 



Caput latum, subproductum, subverticale. 



Thorax transversus, antice emarginatus, crebre et valde punctatus. 



Elytra lata, robusta, siibparallela, aliquando obsolete carinata, crebre 

 et valde punctata. 



Pedes : tibiis posticis ad marginationem calcaratls, robustis. 



Labrum transversely subcircular, broad. 



Maxillary palpi (Tab. IX. fig. 7 m) elongate and robust ; the basal 

 joint minute ; the second dilated at the apex ; the third attenuate 

 at the base and incrassated ; the apical joint is attenuate and acu- 

 minate. 



Labial palpi attenuate, elongate. 



Antenna? approximate, situated below the lower margin of the eyes, 

 robust, filiform ; the third joint being more attenuate than any of 

 the others, and, with the exception of the basal joint, longer than the 

 others. 



Eyes lateral, situated at the base of the head, in form circular and 

 subglobose. 



Head broad, almost vertical, subproduced in front ; above the 

 labrum is a transverse depressed plane ; the base of the head is 

 more or less coarsely granulated. 



Thorax broadly transverse ; the anterior margin is distinctly 

 emarginate ; the anterior angles are depressed and acute ; the sides 

 are marginate, and in outline rounded ; the basal line is arcuate, that 

 is, parallel to the anterior margin ; the surface at the sides is broadly 

 and evenly depressed, equate, and more or less coarsely punctured. 



Scutellum triangular, impunctate, situated in the same plane as 

 that of the elytra. 



Elytra broad, robust, depressed, sufrparallel, their greatest breadth 

 being postmedial ; the surface is equate, or, in one species (L. Afri- 

 cana), obsoletely and longitudinally bicarinated from the shoulders to 



* \i6os, lapis ; vo/ir/, cultus. 



