404 INSECTA MADERENSIA. 



boreal regions. It is in fact the representative (except in habits) of the ^S". grisea 

 of our own country (so abundant in sandy districts towards the coast), with which 

 indeed by some entomoloi,nsts it has been actually united, — but from which it is 

 in my opinion most unquestionably distinct, displaying as it does important differ- 

 ences (even of structure) which can hardly be accounted for by geographical 

 influence. Thus, it is not only of greater magnitude, and otherwise adorned in 

 the arrangement of its scales, but its punctuation is altogether much more rugose, 

 its eyes are more oblong, and its prothorax (the sides of which, as already stated, 

 have a very e\adent tendency to be acute, instead of obtusely rounded, in theii- 

 centre) is longer. It would seem to be rare in Madeira, the only three specimens 

 Avhich I have taken having been captured in the chestnut-woods of Santa Anna 

 during the summer of 1850. 



§ II. Bostrum breve latum, sitpm lined media longitudinali impressum ; oculis subrotundatis : tarsorum 



sponijice minus distinctce. 



a. Oculi prominentes : pedes antici leviter elongati. 



309. Sitona latipennis. 



S. subovato-elongata, squamulis raetallico-cinereis et albidis dense irrorata, prothorace leviter rugnloso- 

 subpunctulato convexo, ad latera in medio rotundato-ampliato, elytris punctato-striatis convexis, 

 post medium latioribus et callo postico utrinque notatis, interstitiis alternis plerumque obsole- 

 tissime tessellatis, antennis pedibusque ferrugiueis longiusculis, illis gracilibus. 



Long. Corp. lin. 3-3i. 



Sitona latipennis, Schon. Gen. et Spec. Cure. ii. 99 (1834). 

 Habitat in montibus MaderjE, super folia Genista scoparice, Linn., aistate et autumno frequens. 



S. somewhat ovate-elongate (being expanded posteriorly), black, and more or less densely besprinkled 

 with very deciduous scales, — part of which (especially towards the hinder region) are white, but 

 the greater portion submetallic-cinereous (reflecting, when viewed obliquely, either a slightly 

 golden or greenish-golden lustre). Rostrum shorter and broader than that of the last species, 

 and more flattened above, — having no lateral sulci, and not being excavated in the centre (the 

 \nedial canal of that insect being here represented by merely a narrowly impressed hne). Eyes 

 nearly round, and very prominent. Prothorax almost unpunctured on the disk, but very lightly 

 rugulose and subpunctulatcd towards the sides; convex, and considerably rounded at the 

 edges, — the widest part being about the middle; with its front margin a little raised, and 

 generally with an exceedingly shallow rounded fovea on either side of its hinder disk. Elytra 

 convex, and expanded behind the middle ; punctate-striated ; and with the interstices flattened, 

 — the alternate ones, together with the suture, being often very obsoletely tessellated with the 

 darker and paler scales (but which in many instances is altogether imperceptible) ; rather more 

 pubescent behind than in any of the other species, and armed on either side with a small 

 callosity at a short distance within their apex. Antenna and legs ferruginous, and rather long ; 

 \.\\c former being slender; and the latter having their anterior pair more elongated than the rest. 



