252 THE CANADIAN ENTOMOLOGIST. 



Thorax one-half longer than broad, elytra much shorter than 



the abdomen. . 1 1 in iongicoilis. Ziegl. 



Of the above, both cyanescens and difficilis are considered varieties 



of humeralis, though, owing to the difference in sculpture, one of them is 



placed in a different division of the table from the others. The genus 



needs careful revision in the light of more material than is at my 



command. 



Phyllob^nus, Spin. 



Contains a rather small species, P. dislocatus, Say (.11-17 in.), of a 

 black, colour and elongate form, the last three joints of the antennae 

 compressed, sub-triangular. The elytra are very coarsely punctured in 

 rows, and ordinarily ornamented with a curved sub-basal and undulate 

 median band of yellow, and an apical spot of the same colour. Either 

 the first or last may be absent or the median one alone remain. 



ICHNEA, Lap. 



Represented in Canada by /. laticoriiis, Say, about .24 in. long, 



black, linear, the head vittate with yellow, thorax margined with the same 

 colour, elytra with stria; of large punctures, the apical ones confused. 



Chariessa, Perty. 



C. pilosa, Forst, is a beautiful velvety-black insect 

 about .50 in. long, the thorax roseate with two^5 

 broad black discal lines, usually confluent behind. 

 The variety onusta, Say, (fig. 20) has these lines reduced 

 or wanting, and the elytra margined with yellow. 

 Orthopleura, Spin. 



O. damicornis, Fabr., is black, thickly punctured, 



pilose, the thorax reddish. It varies in length from .25 ^^ 



to .38 in. The antennae have the usual broadly dilated, compressed club 



of this group. 



Laricobius, Rosenh. M 



Of this genus, L. Erichsoni, found also in Europe, is the only 



Canadian species. It is a small brown insect about. 10 in. long, with 



short black hairs, while the elytra are marked with rows of large quadrate 



punctures, 



Necrobia, Latr. 



As the name indicates, the species are found about carrion, espe- 

 cially that which is in a dried slate, and they form one of the most efficient 

 scavengers on the Western plains. In colour they are blue, more or less 

 polished, and sometimes marked with red. They easily separate thus : — 



20 



