O.ri/tehts.'] sTAPHYLiNtDJ:. 379 



elytra redilish or rcddisli-brown ; liead distinctly triangular, with very 

 prominent eyes, depressed and dull in front and punctured behind, with 

 a distinct furrow in centre of vertex ; antennfe elongate, as long as head 

 and thorax united, slightly thickened towards apex, with the penultimate 

 joints not transverse, black, with the hrst three joints red ; thorax trans- 

 verse, not strongly narrowed behind, Avith the usual three furrows 

 strongly marked, rather strongly punctured ; elytra transverse, evidently 

 longer than thorax, with a distinct raised line at sides, rather finely and 

 thickly punctured ; hind body almost impunctate, with strong outstand- 

 ing setse, a little lighter at apex ; legs testaceous. L. 3| mm. 



Male characters very peculiar, the seventh ventral segment being fur- 

 nished with two deep incisions ; the space between these is as long as 

 the lateral lobes of the segment, and is longitudinally impressed, and 

 dilated at the apex, which is slightly emarginate. 



Tu iluug, vegetable refuse, &c. ; common and generally distributed throughout the 

 kingdom. 



This is one of our most distinct species and may at once be known by 

 its very triangular head and elongate antennre. 



O. laqueatus, Marsh (piceus, Sahib. 7iec. L., luieiiiennis, Er., jdci- 

 giatiis, jNIots. Tanycnarus luteipennis, Thoms.). INIore shining than 

 the preceding, with the elytra more brightly reddish-testaceous ; head 

 large, as broad as thorax and transverse in male, narrower than thorax 

 and subtriangular in female, with forehead much depressed especially in 

 male ; vertex Avith three more or less distinctly marked longitudinal 

 furrows; antennte rather short, dark, with testactous base, penultimate 

 joints rather separated, transverse ; thorax more strongly transverse 

 than in 0. sculptus ; elytra with punctuation a little more distinct and 

 less rugose ; hind body scarcely visibly punctured or shagreencd in front, 

 punctuation sometimes more evident behind ; legs testaceous. L. 4 



mm. 



Male with the seventh ventral segment of hind body deeply bisinuate, 

 the central lobe narrow and projecting beyond lateral lobes, sixth feebly 

 sinuate with a depression before sinuation which is bounded on each 

 side by a small reddish tubercle. 



In dung, haystack refuse, moss, &c. ; generally distributed and common throughout 

 the kingdom. 



O. piceus, L. Extremely like the preceding in general appearance, 

 and very liable to be confounded with it ; it is on the average a little 

 larger, and may be distinguished by its head which has only one longi- 

 tudinal groove on centre of vertex, and is also more punctured in front, 

 with the frontal space less concave and depressed, and the clypcus not 

 so acute at the angles ; the last joint of the maxillary palpi is about as 

 Ion" as, or even longer than, the penultimate, instead of shorter as in 

 0. laqueatus ; the eyes also are larger than in that species ; the male 



