■490 CLAVICORNIA — LATHRIDIIDAE. 



toothed ; maxillae with two lobes ; third joint of maxillary 

 palpi large and thick, last joint rather shorter and much 

 thinner ; ligula somewhat dilated at apex. 



Monotoma, Herbst. 

 b. Antennae eleven-jointed, with two nearly equal 

 larger apical joints. 



Labrum rounded in front ; apex of mandibles two- 

 toothed ; maxillae with two lobes ; third joint of maxillary 

 palpi shorter than second but as thick, last joint conical ; 

 ligula rounded in front. Holoparamecus, Curt. 



e. Antennae eleven-jointed, with three larger apical 

 joints. 



It Apex of mandibles simple ; thorax with separate 

 side border more or less raised. 



Labrum straight in front ; maxillae with one lobe ; third 

 joint of maxillary palpi rather smaller and shorter than 

 second, last joint almost as long as second and third 

 together ; ligula scarcely distinct from mentum ; labial 

 palpi apparently two-jointed. Lathridius, Herbst. 



II, Apex of mandibles two-toothed ; thorax without 

 separate side border. 



Labrum emarginate in front ; maxillae and palpi as in 

 Lathridius ; ligula pointed in front. Corticaria, Marsh. 



Anoniniattis, 



Eed-yellow, shiny. Thorax diffusely and strongly punc- 

 tured, on middle of disc almost in rows ; each elytron with 

 six rows of large, deep punctures, standing in shallow striae 

 and effaced at apex. L. f 1. Scarce. 



A. duodecimstriatus, Miill. 



Mo^ioto'ina, 



A. Head and thorax coarsely punctured. 



€1. Thorax considerably narrowed in front. 



Thorax with prominent anterior angles, distinctly notched 

 sides and two depressions at base. 



I, Elytra not much broader than thorax. 



1. Thorax much longer than broad. 



Pitch-black ; thorax and elytra brown ; antennae and 



