MALTHODES. 65 



II, Thorax not broader than long, posterior angles 

 rounded. 



Black ; part of under-side yellow ; legs brown, knees 

 lighter. Head not much narrowed behind, finely punc- 

 tured, without frontal furrow ; elytra more than 2| times 

 as long as together broad. Male with penultimate dorsal 

 abdominal segment elongate, emarginate at apex, produced 

 on each side into a not very long lobe, suddenly elbowed at 

 apex, penultimate ventral segment emarginate, last ventral 

 segment very narrow, wider at base and apex, which is 

 almost truncate. L. 1| — If 1. Eare. M. misellus, Kies. 

 -B. Length | — | lines. 



Yellowish-gray; apex of elytra and sometimes margins 

 of thorax dirty yellow ; antennae brownish, scarcely reach- 

 ing apex of elytra. Thorax more than double as broad as 

 long, all angles blunted ; elytra 2| times as long as together 

 broad. Male wdth last dorsal abdominal segments elongate, 

 apical ones deeply split, penultimate ventral segment 

 roundly emarginate and produced on each side into long, 

 pointed lobes, last ventral segment strongly curved, some- 

 what dilated at base, forked at apex. Eather common. 



if. atomus, Th. 



3IELYBIDAJE, 



A, Episterna of mesothorax not separate from sternum; 

 metasternum prominent behind. 



Insects with retractile vescicles at anterior angles of 

 thorax and beside first abdominal segment. Malachiides. 



H, Episterna of mesothorax separate from sternum; meta- 

 sternum truncate behind. 

 Insects without retractile vescicles. Dasytides. 



MALA CHIIDES, 



A, Antennae inserted between eyes. 



Ligula straight in front; labrum nearly as long as broad, 

 slightly rounded in front. Malacliius, Fab. 



JB. Antennae inserted on sides of head. 



Ligula rounded in front; labrum much broader than 

 long, truncate in front. Anthocomiis, Er. 



VOL. 11, F 



