INSECTA MADERENSIA. 607 



Santo, at rather low elevations, —occurring in the dung of cattle, at all seasons of 

 the year. In the neighbom-hoods of Funchal and Santa Anna it is at times 

 exceedingly abundant. It is universal throughout Europe, and is recorded also 

 from Syria. It may be at once known from the other Oxyteli with which we are 

 here concerned by the largely-developed head and clypeus of its male sex, and by 

 its pale testaceous elytra. 



474. Oxytelus sculptus. 

 O. niger subnitidus, capite prothoraceqvie minus profunde inaequaliter punctatis (hujus angulis posticis 

 acutiusculis), elytris longitudinaliter strigulosis fusco-piceis, antennis longiusculis ad basin piceo- 

 feiTugineis, pedibus testaceis. 

 Mas, abdominis segmento septimo subtus profunde bi-iuciso (lobo intermedio lateralibus squali, ad 

 apicem emarginato). 



Fmm., abdominis segmento septimo subtus apice leviter bisinuato (lobo intermedio triangulari). 

 Long. Corp. lin. 2. 



Oxytelus sculptus, Grav. Mon. 191 (1806). 



hngicornis, Mann. Brachel. 48 (1831). 



sculptus, Ericb. Gen. et Spec. Staph. 788 (1839). 



, Heer, Fiia Col. Helv. i. 20-3 (1811). 



Habitat Maderam, prsesertim in lutosis per margines aquarum, rarior. 



O. very similar to the O.piceus, but just perceptibly smaller : with its head a.ni prothorax rather more 

 densely and not quite so deeply punctured, and with a tendency to be a little more roughened 

 (or minutely strigulose) iu parts ; the former being narrower than the prothorax in both sexes, 

 with its central channel a little less abbreviated, and with the front margin of its clypeus some- 

 what more rounded and deflexed ; the latter with its sides posteriorly just appreciably straighter 

 (and therefore with the hinder angles a little more defined, or acute), and frequently picescent on 

 Its disk. Eli/tra rather more coarsely longitudinally-strigulose, and of a darker hue, than in that 

 insect, — being usually chestnut, or brownish-piceous, and with only a slight testaceous tinge. 

 Antenna distinctly longer than the head and prothorax (their second joint being subequal to, or 

 perhaps a little shorter than, the third), darker than those of the O. piceus, — being brownish- 

 black, with the basal three joints piceo-ferruginous. Legs testaceous. 



Male, with the seventh segment of the abdomen beneath deeply incised on either side (the interme- 

 diate lobe being equal to the lateral ones, and emarginated at its apex). 



Female, with the seventh segment of the abdomen beneath slightly sinuated at its apex (the interme- 

 diate portion being less obtuse, or more triangular, than in the O.piceus, and not so wide at its 

 base). 



The above comparative diagnosis will fully explain the differences between the 

 present insect and the last one,— the longer antennge however of the O. sculptus, 

 in conjunction with its darker elytra and the less-developed heads of its male sex, 

 being sufficient even alone to separate it from its aUy. Although, likewise, of 

 stercoraceous habits, it is upon the whole less exclusively so than the O.piceus, 



