CARABIDAE. 23 



Tribe XII.— OZ^l^IXI. 



Antennae arising under distinct frontal plates, the four basal 

 joints not finely pubescent but hairy. Clypeus prolonged at 

 middle. Head more or less narrowed behind the eyes to a neck 

 and with at least two supra-orbital setas. Eyes round, moderately 

 prominent, irregular in outline behind, distant from the buccal 

 opening beneath by the moderately widened gente. Mentum 

 broad, the suture at base usually very plainly visible, toothed 

 (except in Eiistra), ligula moderate or small ; the paraglossa? nar- 

 row and entirely adherent ; the palpi variable in form, the terminal 

 joint usually cylindrical, flattened and truncate at tip, the maxil- 

 lary palpi similar. Thorax with numerous small setigerous 

 punctures along the margin. Body more or less pedunculate. 

 Scutellum not prolonged between the elytra. Elytra not mar- 

 gined at base, narrowly inflexed at the sides, margin intermitted 

 one-third from apex but without internal plica. Prosternum not 

 prolonged at tip. Mesosternum very narrow, in some cases not 

 separating the middle coxas. Mesosternal epimera broad, not at- 

 taining the middle coxas. Metasternal epimera visible. Posterior 

 coxas distant, the first ventral segment visible between them. 

 Anterior tibiae emarginate on the inner side ; the spars distant. 

 Tarsi slender, simple in both sexes. 



The sexual characters are feeble, the males sometimes having 

 the anterior femora toothed beneath. 



By all European authorities this tribe has been placed in the 

 series in which the mesosternal epimera attain the coxal cavities. 

 The idea originated with Schiodte, has been adopted by Schaum 

 and acknowledged by Chaudoir. 



The interruption of the lateral margin of the elytra is a cha- 

 racter entirely different from that observed in the succeeding 

 tribes. If the margin is followed from the apex to the interrup- 

 tion, it will be observed that this end passes ove?^ that which is 

 formed by the anterior portion, while in the Pterostichini, etc., 

 the posterior end passes under the anterior and is continued on 

 the under sid(! of the elytron in a long ridge. 



The relationships of the Oztenini are feeble in the direction of 

 Paeudomorpha, but more decided towards Nomius and Psi/drus, 

 which lead through the Morionini to the central mass of the 

 Harpaline series. 



