AMERICAN COLEOPTERA. 173 



It may be observed in Chlaenius that those species in which the males 

 have not the pubescent space near the tip of the middle tibiae, that is, 

 those of my division A (Trans. Am. Ent. Soc. v, 1876, p. 257), are 

 without setae on the second joint of the labial palpi, while division B 

 (and Anomoglossus with its long second joint) is plurisetose. 



Tribe XLVL— Zabrini. 



AntennfB filiform, arising beneath a slight frontal ridge, the three basal joints 

 glabrous. Head short, without distinct neek, one supra-orbital puncture. Clypeus 

 very slightly prolonged, a puncture in each anterior angle. Eyes oval, relatively 

 small, not more convex than the sides of the head, distant beneath from the 

 mouth. Labrum feebly emarginate and plurisetose in front. Mandibles stout, 

 arcuate, more' or less obliquely furrowed above, without setigerous puncture 

 externally and feebly bidentate on inner margin. Maxillae strongly hooked at 

 tip with stiff" bristles within, outer lobe biarticulate, palpi stout, third joint longest, 

 fourth oval. Mentum broad deeply emarginate, variabh' toothed, the ligula 

 moderately prominent, apex free, truncate or bisinuate and bisetose, the para- 

 glossse obtuse and not longer than it, the palpi moderate, the second joint longer, 

 plurisetose in front, last joint somewhat oval, shorter than the preceding. Thorax 

 broad, as wide as the elytra, a setigerous puncture at the side but none at the 

 hind angle. Body not pedunculate, scutelluin distinc-t. Elytra narrowly inflexed 

 at the sides, the margin interrupted posteriorly and with a well marked internal 

 plica. Prosternum not prolonged. Mesosternum rather wide between the coxse 

 and broadly concave, the epimera narrow. Metasternal epimera distinct, posterior 

 coxae contiguous. Legs moderate, middle and posterior tibiae gradually broader to 

 tip, spinulo3e externally, the anterior of elongate-triangular form, spinulose at 

 outer api(!al angle, the inner side obliquely grooved, the inner sjjur not remote 

 from tip, the terminal spur short, broad, laminate at the sides and suddenly 

 narrower at tip. Tarsi filiform, fourtii joint simple. 



The males have the first three joints of the anterior tarsi rather widely dilated 

 and biseriately squamulose beneath. 



In some species the males have tlic apices of the middle and pos- 

 terior tibiae prolonged on the inner side in a dentiform process. By all 

 European authorities the anterior tibiae are said to have two spurs at 

 the apex and one above the emargination in the usual position. This 

 statement of the facts of the case seems to me a very loose expression. 

 All Carabidae have at the tips of the tibiae two spurs which are in all 

 cases articulated appendages of the tibiae. These in whatevei- language 

 used are called by the equivalent of our word "spur." That which 

 makes the so-called smaller terminal spur is merely a dentiform pro- 

 longation of the inner apical angle of the tibia which is in all respects 

 the homologue of the apical tooth of the middle and posterior tibia& of 

 certain males. I am not aware of any coleopterous insect having more 

 than two true tibial spurs and I therefore venture to object to any form 

 of exprcsNion conveying a fals3 idea. 



It will also be observed that the anterior tibia; are far less emarginate 



