58 INSECTA MADERENSIA. 



instance as distinct, deeming it sufficient to have pointed out thus far the real 

 natvu'c of its generic claims. 



41. Ophonus obscurus. 

 O. oblongus subpubescens punctatus, infra niger, supra subcyanescenSj prothorace transverso-sub- 



quadrato lateribus rotundatis, elytris striatis depressis, interstitiis minutissime punctulatis, an- 



tennis pedibusque rufo-ferrugineis. 

 Long. Corp. lin. 5^. 



Carabus obscunis, Fab. Unt. Sj/st. i. 151 (1792). 

 Sarpalus ohscurus, Sturm, Deutsch. Fna, iv. 85 (1818). 

 Ophonus ohscurm, Stepb. III. Brit. Ent. i. 160 (1828). 

 Harpahcs obscunis, Dej. Spec, des Col. iv. 197 (1829). 



Habitat in locis bumidis Maderse, rarissimus ; sub lapide ad fornacem exoletam calcariam juxta Sanc- 

 tum Vinccntium " Forno de Cal " dictam a meipso d. 2 Jul. a.d. 1850 semel tantum repertus. 



O. obloug, very sligbtly shining, punctured all over, and a little pubescent ; beneath dark pitchy- 

 black ; above with the head and prothnrax of a very obscure bluish tinge and coarsely punctured ; 

 the latter rather smoother on the disk, and mth a faint dorsal channel, somewhat transverse- 

 quadrate, a little narrowed behind, and with the sides and angles slightly rounded. Elytra rather 

 more distinctly blue than the rest of the siu'face, depressed and striated, the strise being impunc- 

 tate, and with the interstices thickly and finely punctulated. Legs, antenna ani palpi rufo- 

 ferruginous. 



A tolerably common insect throughout Europe and the north of Afiica. In 

 Madeira however it would appear to be of the greatest rarity, the only indigenous 

 specimen which I have seen haiing been captiu'ed by myself from beneath a stone 

 at the edges of the small stream which issues from out of the limestone rock (so 

 well knoMTi to geologists from its isolated and elevated position amidst the siir- 

 rounding basalt) at the Forno de Cal, near Sao Vincente, on the 2nd of July 1850. 



Genus 20. STENOLOPHUS. 



(Megerle) Steph. III. Brit. Ent. i. 165 (1828). 



Corpus parvum, oblongum : prothorace subquadrato : alis amplis. Antenna filiformes, capite pro- 

 thoraceque paulo longiores, articulo primo sequentibus robustiorc, secuudo brevi. Labrum sub- 

 quadratum, antice truncatum et setis paucis longissiniis instructum. Mandibula breves acutae, 

 intus basi subdenticulatje. Maxilla bilobse : lobo externa palpiformi biarticulato : interna acute 

 incurvo, apice uncinato, intus vakle ciliato. Palpi articulo ultimo penultimo majorc, fusiformi- 

 subacuiiiinato. Mentum transvcrsum, autice profundc emarginatum et deute medio nullo in- 

 structum. Ligula cornea, apice truncata j paraglossis membranaceis rotundatis, eam baud supe- 

 rantibus. Pedes vix robusti : tarsis anterioribus in maribus articulis quatuor dilatatis, subtus 

 biseriato-setosis : unguiculis simplicibus. 



The present genus is somewhat intermediate between the preceding one and 

 Trechus; nevertheless it may be at once known from the former by the much 



