Coleopterological Notices, IV. 361 



Arizona, and probably also throughout the elevated central region 

 of Mexico. 



The following tabular statement may possibly facilitate the iden- 

 tification of the greater part of those species at present known to 

 collectors : — 



Anterior legs elongated in the male ; beak long, slender, strongly, evenly- 

 arcuate at least in the female, the antennae inserted near the middle in 

 the latter sex ; femoral teeth minute ; species large and homologous with 



the European longimanus 2 



Anterior legs not elongated in the male ; beak long and slender, much longer 

 and with the antennae inserted at or near the middle in the female ; species 



moderately large 3 



Anterior legs not elongated in the male ; beak shorter, stouter and more nearly 

 straight, the antennas inserted near apical third in the male and but 



slightly less apical in the female ; species smaller 4 



*J — Elytra with long sparse erect and bristling setae ; beak in the female much 

 longer than in the male ; basal joint of the anterior tarsi extremely 



elongate in the latter sex 1 inaequalis 



Elytra with short and more close-set erect setae ; beak not much longer in the 

 female ; basal joint of the anterior male tarsi subequal in length to the 



remainder 2 brevisetosus 



Elytra devoid of erect setae; beak only very slightly longer in the female; 

 basal joint of the anterior male tarsi a little shorter than the remainder. 



3 mucidus 

 3 — Anterior femur of the male with a rather small, very acute tooth. 



Body piceous-black, the antennae rufous ; elytra distinctly and gradually 



inflated behind 4 laticollis 



Body much broader, pale ochreous-testaceous throughout, the sterna black- 

 ish ; elytra subparallel 5 a III pill S 



Anterior femur of the male with a large rectangular tooth; beak in that sex 

 shorter and stouter ; body dark rufo-testaceous, variegated with uneven 



darker spots 6 parvicollis 



4 — Elytra with erect bristling setae 5 



Elytra without erect setae 6 



5 — Prothorax distinctly constricted behind the apex. 



Body generally dark in color ; prothorax less transverse ; elytral setae sparse 



but long and conspicuous 7 liystricula 



Body pale ochreous-flavate ; prothorax short and strongly transverse ; erect 



setae more numerous and much shorter 8 liispitlllS 



Prothorax not, or but just visibly and broadly constricted near the apex. 

 Larger species, the prothorax rather large, strongly transverse and finely 

 punctate ; beak longer ; erect setae short and abundant, somewhat re- 

 curved 9 tiirtus 



Small species ; prothorax small, coarsely punctate ; beak very short, barely 

 as long as the prothorax ; erect setae long, finer and sparser. 



10 filiolus 



