xxxiii, '22] ENTOMOLOGICAL NEWS 163 



Or, the species may be grouped with equal definiteness by 

 the anal ventral setigerous punctures. There are always four 

 such punctures (two each side) regardless of sex, arranged as 

 follows : 



Intermediate anal punctures mutually twice as distant as from the 

 lateral ones dcntipes 



Anal punctures very nearly equally spaced. ... impressifrons to fossor 



Intermediate anal punctures widely distant and close to the lateral 

 ones rnfa to cordata 



Intermediate anal punctures close together at the middle of the apical 

 margin striatopunctata to stic/inulu 



The last group beginning with striatopunctata is again 

 sharply delimited by a character of such importance that the 

 failure of LeConte to mention it is difficult to explain. The 

 lateral marginal line of the thorax here fails to attain the true 

 base, but turning inward forms a pseudobasal margin at the 

 summit of an abrupt declivity very much as in certain genera 

 of Anthribidae. 



I would then divide our species of Clh'ina into four groups, 

 giving each the name of its best known representative, as fol- 

 lows : 



DENTIPES GROUP. Middle tibia with subapical external spur ; clypeus 

 bi-emarginate at sides ; front thighs acutely dentate beneath apically : 

 elytra 5-punctate ; intermediate anal setae twice as distant from each 

 other as from the outer setae. Represented by dcntipes only. 



IMPRF.SSIFRONS GROUP. Middle tibia with subapical external spur; 

 clypeus uni-emarginate at sides ; elytra 4-punctate ; intermediate anal 

 setae approximate to the lateral ones. Includes impressifrons, tcxana, 

 planicollis, pia'Ctulata, punctiticra. rubicunda, pallida, collaris, fossor. 



Of these, collaris and fossor may be recognized by their 

 color : pallida by having the ventral surface in great part pol- 

 ished (reticulato-alutaceous in all others) ; rubicunda by the 

 very thick frnnt thighs, which are convex both above and be- 

 neath and rather deeply sinuate apically beneath, also by the 

 presence of diverging raised lines at the middle of the first ven- 

 tral segment, these being otherwise present only in the aincn- 

 cana group. The remaining species are closely allied and diffi- 

 cult to distinguish, and it is rather probable that tr.vaiuis does 

 not differ specifically from planicollis. 



