the Family PyiocliroiclEe. 313 



12. (13) Head in cf excavate behind eyes .... Hemidendvoides, Fisch. 



13. (1l') Head in J not excavate behind eyes. 14. 



14. (15) Geuaj conical, sides of thorax angulate 



before base Eupyroclirod, g. n. 



15. (14) Genaerounded,sides of thorax rounded. Fyruchroci, (yiioS. 

 10. (11) Head not triangular in outline, genge 



not prominent 17. 



17. (18) Head in J excavate behind eyes .... Schizotus, Newni. 



16. (17) Head in (S not excavate behind eyes. Pseudapyruckroa, Pic. 



POGONOCERUS, Fiscll. 



Altliough this genus was placed as a synonym of Den- 

 droides by Lacordaire and also iu Geuiminger &; Harukrs 

 ' Catalogue/ lleiche has demonstrated (Bull. Soc. Ent. 

 France, 1878, p. Ixxiiij that it is abundantly distinct. It 

 differs from every other genus iu the family in having the 

 tliird joint of the anteunee sniallj even smaller than the 

 second. 



The only species is P. tliorucicus, Fisch. 



DjiNDROiDEs^ Latr. 



Considerable misconception seems to have existed in the 

 minds of European coleopteri.sts as to the scope of tliis 

 genus, and the numerous Old- World species assigned to it by 

 various authors [e. g., Lewis, Pic, and myself) are really 

 quite apart from it. 



The type of the genus is D. bicolor, Newm. { = canadensis, 

 Lee). 



The species may be distinguished as follows : — 



1. (4) Head and elytra blackish, thorax red . . 2. 



2. (3j l-'egs reddish testaceous. (PI. Xll. 



tigs. 1,1a.) bicolor, Newm. 



3. (2) Legs black, \\ith base of femora and 



coxa ferruginous *picipes, Hern. 



4. (1) Species unicolorous, reddish testaceous 



or piceous 5. 



o, (10) Species reddish testaceous. (North 



Anieiican.J 6. 



6. (7 J Antenuce of 5 with joints 3-0 trian- 



gular, the following gradually more 



and more produced at the extremity . *testuceus, Ltc. 



7. (0) Autennte of $ with branch of sixth 



joint nearly as long as that of seventh. 8. 



8. (9j Thorax as long- a-s broad ; eyes iu (S al- 



most contiguous for some distance 



along middle line : species shorter . , concohr, Newm. 



* Species marked with an a-tcri;k 1 know only from description. 



