Monotoma.] OLAVICORNIA. 273 



The sculpture of this species will easily separate it from all the others. 



IH. brevicollis, Aube. Of much the same colour as the preceding, 

 but much duller, and with the front parts more scabrous ; it is, moreover, 

 easily distinguished by its shape which is more parallel, the elytra being 

 narrower in proportion to the thorax, and much less ovate; their sculp- 

 ture, too, is less coarse and more distinct, consisting of regular rows of 

 asperate punctures ; the species, however, is best known by the shape 

 of the thorax which is almost quadrate with the sides quite or almost 

 parallel, and the anterior angles only slightly and bluntly produced, the 

 posterior ones being also evidently produced and callose ; the male 

 characters are much as in the preceding. L. lf-2 mm. 



In haystack refuse, cut grass, &c. ; rare ; Gravesend, Shcerness, Claygatp, Forest 

 Hill, Darenth Wood, Maidstone, Pcckham, Shirley j Cheddar, Somerset; Itepton ; 

 Wallasey, Cheshire. 



IMC. picipes, Herbst. Pitchy-black, or brown, sometimes with 

 elytra reddish ; as a rule it is a little more shining than M. breuicollis, 

 but duller than M. spinicollis ; from the former of these species it 

 may moreover be distinguished by its proportionally longer, narrower, 

 and less quadrate thorax, of which the anterior angles are more pro- 

 duced, while from the latter it may be separated by having the thorax 

 less contracted in front, with the anterior angles less sharply produced, 

 as well as by its narrower elytra and less coarse sculpture ; from both 

 these species, and also from M. quadricollis, it may be known by the 

 very pronounced fovea? or impressions on the forehead. L. If -2 mm. 



In the male the anterior tibiae are slightly sinuate and curved at apex 

 on their interior margin. 



In haystack and other refuse ; occasionally by sweeping ; generally distributed and 

 common throughout the Southern and Midland districts of England, but rarer 

 further north; Scotland, scarce, Solway, Forth, and probably other districts ; Ireland, 

 Dublin and Water ford. 



IK. quadricollis, Aube. Blackish or reddish-brown, with elytra 

 sometimes lighter than thorax; smaller and narrower on the average 

 than the preceding species, and somewhat linear and parallel- sided; head 

 and thorax closely sculptured, the former without impressions on fore- 

 head, the latter subquadrate, with sides straight and almost parallel, 

 anterior angles bluntly prominent, posterior angles scarcely prominent, 

 sides hardly visibly crenulate ; elytra only slightly broader than thorax, 

 rather long, with rows of asperate punctures. L. H mm. 



Male with the anterior tibia? sinuate before apex. 



In haystack refuse, dung-heaps, &c. ; not uncommon ; London district, generally 

 distributed; St. Peter's, Kent ; Hastings; Cheddar, Somerset; Wicken Fen ; Edg- 

 baston ; Knowle ; Repton ; not recorded from further north than Derbyshire : Murray 

 records it from near Edinburgh and Glasgow, but Dr. Sharp doubts whether the 

 determination is correct ; it is probably much more widely distributed than, is 

 generally supposed, and it often appears to be confused with M. picipes by collectors, 

 from which it may at once be known by its even forehead, which is without the 

 depressions so distinct in this latter species. 



VOL. III. T 



