1<)8 GEO. H. HORN, M. D. 



Mandibles arcuate at tip with a setigerous puncture on the outer side. Maxillge 

 with the inner lobe hooked at tip, ciliate or spinulose within, outer lobe moderately 

 stout, biarticulate, the palpi rather stout, the last joint longer than the third, 

 elongate-oval or fusiform. Mentum broad, deeply emarginate, toothed or not. the 

 ligula moderately prominent, truncate and bisetose at tip, the paraglossse adherent, 

 sometimes free for a short distance and rarely longer than the ligula, the palpi 

 rather stout, the last joint a little longer than the second, more or less oval in 

 shape, (impressed beneath in Miscodera) , the second joint bisetose in front. Thorax 

 more or less ovoid, the sides narrowly margined and bisetose, the posterior seta in 

 front of the hind angles. Body pedunculate, scutellum in the peduncle. Elytra 

 not margined at b^se, sides narrowly inflexed, margin not interrupted posteriorly 

 but with a short internal plica, disc without dorsal punctures. Prosternum obtuse 

 at tip. Mesosternum rather wide, oblique, the epimera narrow. Metasternal 

 epimera distinct, posterior coxse contiguous or very narrowly separated. Legs 

 moderately stout, the tibise not spinulose externally, the anterior moderately 

 dilated at tip, deeply emarginate within, the inner spur at the upper angle of the 

 emargination. The tarsi filiform, fourth joint simple. 



The anterior tarsi of the males may have four, three or two joints dilated, their 

 vestiture usually hairs, rarely squamules. 



The creation of this tribe under the name of Cnemacanthides is due 

 to Lacordaire. Dioctea has been removed by Schaum (Ins. Deutschl. i, 

 p. 353), to the Ditomides, but Promecogvathus was added, the mistake, 

 however, having been corrected on a subsequent page, (p. 773). 



The Broscini have a sUght sub-ocular ridge at the side of the head. 

 This ridge is well marked in the CicindeUdas but I have not observed it 

 elsewhere in Carabidae. 



The latest revision of the tribe is by Putzeys, (Stett. Zeit. 1868, 

 p. 305 — 379), who recognizes seventeen genera and by the characters 

 given of the first six, some of them might with propriety be removed 

 to form a tribe between the present and the Harpalini. 



In our fauna we have but one genus represented by two species. 



MiscoDERA Esch. — In form the species resemble a large Di/schirius. 

 The two species are : 



M. ARCTICA Payk. — Occurs in northern Europe and in Siberia where 

 it has received the name erythrojpus Mots., crossing to Alaska it becomes 

 americana Mann., and it finally reaches Newfoundland under the name 

 Hardi/i Chaud. It is all one species varying in size and brilliancy of 

 surface in the different localities. 



M. INSIGNIS Mann., is altogether different. The anterior half of the 

 thorax is ovate, the basal half prolonged, somewhat like Promecognatlms. 

 It occurs in Alaska. 



I have in the next tribe given my reasons for removing Zacotiis, and 

 in the same place and in Peleciini will be found remarks on the affinities 

 of these two tribes with the present. 



