British Species of Homalota. 103 



segment with four teeth ; two placed close together in 

 the middle, and one at the outside of the segment on 

 each side. 



This species resembles H. Eichoffi, in the shape of the 

 head, but is less depressed, and more robust than that 

 species ; the antennse are not so slender, and are more 

 thickened towards the apex, and the punctuation is more 

 sparing. From H. gregaria, which it resembles in size 

 and appearance, H. planifrons may be distinguished by 

 its head narrowed in front, its more sparingly punc- 

 tured upper surface, and the male characters. It also 

 resembles H. elongatula somewhat, but has a difi'erently 

 shaped head, the thorax narrowed behind, and different 

 male characters. 



Found in the neighboui'hood of London, but apparently 

 very rare. I have seen only five specimens of it, and of 

 these but one is a male. 



Group II. Small, delicate species, with all the segments 

 of the abdomen punctured ; antennce not at all thickened 

 towards the apex. (Species 8 — 12). 



The five species of this group are all found under 

 stones on the banks of rivers, and nowhere else ; they 

 form a well-defined and natural group, with the exception 

 that in H. suhtilissima the structure of the antennae is 

 somewhat different from that of the other species. 



8. Homalota eximia. 



Depressa, nigro-fusca, elytris fuscis, ore, antennis, 

 pedibus, anoque testaceis, dense subtilissime punctata ; 

 antennis gracillimis, apicem versus hand incrassatis; 

 capite thoraceque canaliculatis, hoc subquadrato, basin 

 versus paulo angustato ; elytris thorace longioribus ; ab- 

 domine supra crebre Eequaliter punctate. Long. 1 lin. 



Mas ; antennis paulo longioribus, abdomine segmento 

 7° ventrali longe producto. 



Fem. ; abdomine segmento 7° ventrali apice medio 

 leviter emarginato. 



H. fragilicornis, Wat. Cat. (Kr. ? ?) . 



About the size and build of H. fragilis, Kr. Antennae 

 slender, elongate, entirely yellow, not at all thickened 



