417 



Homalium. ] STAPnTLiNiDiE. 



In the male the seventh ventral segment of hind body appears to he 

 rather strongly emarginate. 



Section III. (Xylodromus, Heer.) 



This section contains one species only, which is chiefly distinguished 

 from Its a hes by the very long terminal joint of the maxillary palpi • it 

 IS about the size of //. excavaium ; it may be distinguished by its rather 

 depressed form, shining appearance, and rather long, almost subquadrate 

 thorax ; the dorsal depressions of thorax are much less distinct than in 

 the H. rivulare group, but much more evident than in H. rufipes and its 

 allies, whicli latter, moreover, have the thorax more convex and quite 

 diflerently shaped ; the species is very rare, and is not found except in 

 Scotland ; it occurs under bark. 



_ H. monilicorne, GylL Bather depressed, shining black, parallel- 

 sided elytra sometimes pitchy or pitchy brown ; head very sparin^lv 

 punctured, with distinct impressions before ocelli, smooth in front • 

 antennae pitchy, with first five joints red, penultimate joints transverse • 

 thorax rather variable in lengtli, but not as transverse as in any of its 

 allies, sometimes almost subquadrate, with sides rather strongly rounded 

 in Iront, and contracted and sinuate behind, posterior angles almost ri-ht 

 angles, upper surface scarcely convex, strongly and very diff-usely pane 

 tured, with dorsal fove^e shallow; elytra double as long as thorax mode- 

 rately closely but not very strongly punctured; hind body extremely 

 finely shagreened, usually lighter at apex ; legs testaceous. L S-si 

 mm. -i 



Section IV. (Phyllodrepa, Thomson.) 



This sectioncontains seven species, which differ considerably in size 

 but are easily distinguished from all the other species of Homalium, except 

 those belonging to the sub-genus Etlieotlmssa, by their smooth and even 

 thorax, which has the usual dorsal fovea either entirely absent or very 

 obsolete; they are found under various conditions, in haystack and vecre- 

 table refuse, under bark, &c., and one or two are often found in flowers • 

 It IS doubtful whether one or two of them are separate species and ou-lit 

 not rather to be considered as varieties. ° 



I. Head with distinct impressions before ocelli; size 



larger (3-4 J mm.). 



i. Antenna; more or less dark ; punctuation of elytra 



evidently finer and closer ; size smaller. 



1. Length 4 mm.; antenna; shorter, dark with 



apical joints often lighter ; thorax less narrowed 



^"f™"* H. BUFIPES, Jfb«m 



{jlorale, I'ayk.). 

 VOL. II. J 



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