IMSECTA MADERENSIA. 305 



Hylesinus Trifolii, Miiller, in Journ. de la Soc. des Scien. du Dep. dii Mont Tonnerre (1803). 

 — , Schmidt, in Ent. Zeit. v. 395 (184i). 



Habitat in graminosis per regionem IMadera; sylvaticam sitis, ad Ribeiro Frio Augusto ineunte 

 A.D. 1850 a meipso repertus. 



H. somewhat ovate-eylindric (being rather short and thick, and a httle narrowed anteriorly), convex, 

 almost opake, brownish- or pitchy-black, and rather densely beset with short pubescence. Head 

 not much produced ; closely and roughly punctured, but without any appearance of a central 

 ridge. Prothorax likewise closely and very roughly punctured ; much smaller than that of the 

 following species, and acuminated in front,— where it is very slightly produced and a little 

 fuscescent ; and with almost imperceptible indications of a central line or ridge. Elytra rather 

 more diluted, or browaish-piceous, than the prothorax ; closely and exceedingly rugulose (espe- 

 cially about the front margin, which is distinctly raised), and rather obscurely punctate-striated 

 (the punctures however being large) ; rounded and entire at their extremity. AntenncE pale fer- 

 ruginous (or almost testaceous). Le^s piceous. 



Eeadily known from the H. clacus by its smaller, more ovate and convexer 

 body, by its shorter and anteriorly attenuated prothorax, and by its altogether 

 more rugulose, though less distinctly pimctui'ed, sm-face. It is apparently ex- 

 ceedingly rare, the only two examples which have come beneath my notice having 

 been captured by myself at the Ribeii-o Prio, by brushing the coarse grass at the 

 edges of the Levada, early in August 1850. It is not an uncommon insect through- 

 out Europe ; and the Madeiran specimens differ in no respect from typical ones 

 which I possess from the Tyrol. 



231. Hylastes clavus, Woll. 



H. angusto-cylindricus elongatus subdepressus niger, prothorace elongato subcylindrico (postice 

 leviter angustato) subnitido et profunde vermiculato-punctato, elytris dilutioribus profunde 

 punctato-striatis, antennis pedibusque longioribus valde robustis, illis ferrugineis, his piceis. 



Long. corp. lin. 1|. 



Habitat Maderam sylvaticam Eestate, rarissimus. 



H. narrow, elongated and cylindrical (though a little depressed), being nearly parallel throughout, 

 black, and rather sparingly beset with short and somewhat rigid pubescence. Head more pro- 

 duced than in the H. Trifolii ; closely and rather finely punctured, and with a tolerably distinct 

 central ridge. Prothorax very coarsely and rather distantly (but not roughly) punctured (the 

 punctures being exceedingly large, though more or less united, especially on the disk, — so as to 

 form somewhat vermiculate, subconfluent longitudinal grooves) ; much more elongated than in 

 the last species, bein"- nearly cylindrical, or perhaps a little narrower behind than in front, — where 

 it is sliijhtly produced and most obscurely fuscescent; and with a sufficiently apparent im- 

 punctate central line. Elytra considerably more diluted than the prothorax, being of a rusty, or 

 brownish-piceous hue ; much less roughened than in the H. Trifolii (the front margin more- 

 over having no appearance of being raised), deeply punctate-striated (the punctures being large 



2b 



