84 MADEIRAN COLEOPTERA. 
the north of Madeira proper) during July 1855; and a fourth has 
been lately communicated by Mr. Mason. 
223. Trixagus gracilis. 
T. subellipticus rufo-brunneus dense cinereo-pubescens, fronte ob- 
solete bicostato, oculis in medio sulcatis, elytris leviter punctato- 
striatis, seriatim pilosis, interstitiis sat crebre et distincte punctu- 
latis, antennis pedibusque ferrugineis. 
Long. corp. lin. 14. 
Trixagus gracilis, Woll., Ins. Mad. 237 (1854). 
T, smaller and less elongate than the preceding species, and with the 
pubescence of a more strictly cinereous (and therefore less yellow- 
ish) tinge. Head and prothorax punctured as in that insect: the 
former, however, with its two frontal ridges exceedingly delicate 
and indistinct, and more central in their position, or further re- 
moved from the eyes,—which are smaller and less convex, and 
cleft in the middle by a groove which extends almost across them. 
Elytra finely striated (the strie appearing delicately but distinctly 
punctured beneath the microscope); with the interstices much 
more coarsely and closely punctulated than in the 7’, integer; and 
with the pubescence disposed (especially behind) in very evident 
longitudinal rows. Limbs ferruginous, and somewhat shorter and 
less robust than in the preceding species; the club of the antenne 
moreover being less abrupt. 
I have added a fresh description of this species, because the 
characters which distinguish it from the European 7’. dermestoides 
(and, in like manner, from its newly discovered Madeiran ally) are 
not sufficiently well expressed in the Insecta Maderensia. It still 
remains unique,—the single specimen (now in the British Museum) 
which has hitherto come beneath my notice having been taken by 
myself in the Rev. R. T. Lowe’s garden near Funchal, during 1848. 
Fam. 26. ELATERIDA. 
Genus 92. COPTOSTETHUS. 
Wollaston, Ins. Mad. 238. tab. iv. f.8 (1854). 
224. Coptostethus femoratus. 
Coptostethus femoratus, Woll., Ins. Mad. 240. tab. iv. f. 8 (1854). 
Inhabits the mountains of Porto Santo; exceedingly rare. Two 
specimens were detected by myself in December 1848, and a third 
has been lately found by Mr, Bewicke. 
