382 ENTOMOLOGICAL NEWS. [Nov. , '07 



use of the characterization of genera by Major Thomas L. 

 Casey.* In the key following, Major Casey's numbers are used: 



" r. Pygidium oblique and entirely concealed in the female sometimes 

 with the mere apex exposed, especially in the male, except in 

 Centrinogyna, where it is vertical and completely exposed in 

 the male 17. 



"17. Mandibles normal in action, their plane of motion horizontal or 

 nea'rly so ; body without erect setae except in Zaglyplus. . 18. 



" 18. Tarsi with the claws connate or single 28. 



"28. Elytral striae normal, distinct, not ioveate at base. 



"Tarsal claws two in number, completely connate in basal third to 

 half 29. 



" 29. Beak long, slender ; body subglabrous and with remotely scattered 

 white scales." 



A. Prosternum flat between coxae ; second joint of funicle not much 



longer than third ; elytral striae very fine but broadly feebly 

 impressed and very coarsely punctate ; body subglabrous, 

 with remotely scattered white scales Zygobaris 



B. Prosternum deeply and abruptly sulcate along the middle ; second 



joint of funicle elongate, longer than first and also than five 

 following joints; elytral striae deeply impressed and very 

 coarsely punctate ; body subglabrous, with remotely scattered 



white scales Zygobaroides. 



" Beak short and stout." 



A. Prosternum flat ; body glabrous, with minute hairs in the remote 



punctures ; antennae inserted beyond the middle, first funicu- 

 lar joint moderate in length ; elytral striae very fine, finely but 

 deeply punctate Zygobarinus. 



B. Prosternum sulcate ; body squamose ; antennae inserted beyond the 



middle. 



A. " Basal joint of the antennal funicle moderate in length ; elytra with 



large remotely scattered white scales in addition to the denser 

 squamules ; species very small ... Catapastus." 



B. " Basal joint of the antennal funicle very long, sometimes as long as 



the entire remainder ; elytral vestiture often vittate or with 

 denuded spots, but without widely dispersed coarser scales ; 

 species moderately large, more or less elongate oval, or nar- 

 rowed and parallel, convex Barinus." 



ZYGOBARIS. 



LeConte, Proc. Am. Phil. Soc. xv, 317. 

 Casey, Ann. N. Y. Ac. Sc. iv, 663. 



Tarsal claws moderate in length and completely connate, 

 without trace of suture, through at least one-third their length. 



* Coleopterological Notices IV, Ann. N. Y. Acad. Sci. vi, 465-469. ^ 



