CANARIAN COLEOPTEKA. 265 



implanted into the axis of the latter in the ordinary way, and not 

 obliquely. The elytra, also, instead of being entire, have a faint 

 tendency to be lopped-off at theii' apex, as in Tomicus ; and the 

 colour, instead of being variegated, is of the ordinary kind for the 

 members of this family. 



426. Triotemnus subretusus, n. sp. 



T. nigro-piceus elytris piceis, nitidus, cylindricus postice vix latior, 

 pilis longiusculis suberectis cinereis parce obsitus ; prothorace lon- 

 giusculo, subconico, parce et sat profunde punctato (antice hand 

 asperato) ; elytris profunde rugoso-punctatis (nee striatis), punctis 

 baud seel pilis evidentius seriatim dispositis, ad apicem subretusis ; 

 antennis pedibusque piceo-testaceis. — Long. corp. lin. 1. 



Habitat Gomeram, a Dom. Crotch tempore vernali a.d. 1862 semel 

 captus. 



Apart from the structural peculiarities of its funiculus and club 

 already referred to, the present insect (which has much the appear- 

 ance, j3r««rt/rtc/e, of an ordinary, though minute, Tomicus) maybe 

 known by its rather shining and deeply punctured surface (parti- 

 cularly of the elytra, where the punctures are not disposed in longi- 

 tudinal rows), and by its being sparingly beset all over with rather 

 long, coarse, and partly suberect, cinereous hairs. The unique spe- 

 cimen described from was captured by Dr. Crotch in Gomera during 

 the spring of 1862, and has by him been presented to the collection 

 of the British Museum. 



Genus 177. LIPARTHRUM. 

 Wollastou, Im. Mad. 294 [script. Leiparthmm'] (1854). 



427. Liparthrum bituberculatum. 



Leiparthrum bituberculatum, WolL, Ins. Mad. 297. tab. vi. f. 3 (1854). 

 , Id., Cat. Mad. Col. 97 (1857). 



Habitat Teneriffam, prtesertim in sylvaticis et editioribus, raris- 

 simum. 



The present insect, which is not uncommon in the sylvan districts 

 of Madeira, and which may be known from the L. curtum by its 

 relatively somewhat narrower and more cylindric outline, rather 

 darker hue, slightly longer antennae, more developed mandibles, and 

 by the pustules on the anterior portion of its pronotum being usually 

 more numerous and coarse, is decidedly rare in these islands, where 

 it appears to occur at intermediate and lofty elevations. I have 

 taken it hitherto only in Teneriffe, — namely, in the wood of the 

 Agua Garcia, and (though merely a single specimen) on the Cumbre 



