APPENDIX. 45 



The very remarkable elytra of this little wood-T)orer, the second 

 interstice of which (from the suture) is not only more elevated than 

 the remaining alternate ones but is gradually raised behind into an 

 enormously developed obtuse ridge which terminates (on each elytron) 

 in a thick backwardly-projecting nodule, give it so extraordinary an 

 appearance that (before dissection) I had imagined it would consti- 

 tute the type of an undoubtedly new genus, closely related to Lipar- 

 ihrum. An accurate examination, however, of its structure does 

 not warrant its being separated from that group the essential fea- 

 tures of which, with the sole exception of its subapically dentate 

 anterior tibiae, it entirely possesses. Thus, the exact proportions of 

 its (/wadr/articulate feet and 4-jointed funiculus, as well as the fact 

 of the inner terminal angle of its tibiae being produced into a long 

 subflexuose spine (or lobe), are in accordance with the normal Li- 

 parihra which indeed in its general aspect, apart from the specific 

 peculiarity of its elytral prominences, it precisely resembles ; so 

 that I should regard the construction of its front tibiae and elytra as 

 the mere trivial features (important though they be) which charac- 

 terize it as a species. 



The L. bicaudatum was taken, in abundance, during the summer 

 of 1864, by Dr. Crotch (and subsequently by his brother also), near 

 Hermigua in Gomera, where it appears to be attached to the " twigs 

 of the sweet Euphorbia" (which is probably the E. balsamifera, 

 though possibly the regis-Jubcey. 



Fam. HYLESINIME. 



Genus HYLURGUS. 

 Latreffle, Gen. Crust, et Ins. ii. 274 (1807). 



Hylurgus destruens, n. sp. 



H. nitidus, pilis erectis mollibus praesertim in prothorace obsitus, 

 niger vel piceo-niger, elytris ferrugineis vel piceo-ferrugineis ; 

 capite prothoraceque parce punctatis, illo lato, crasso, antice in 

 medio argute carinato ; elytris valde transversim rugulosis, punc- 

 tato-striatis, striis versus basin et suturam sat profundis, apice 

 subretusis et parce leviter asperatis ; antennis tarsisque rufo-tes- 

 taceis, femoribus tibiisque nigro-piceis. Long. corp. lin. 2^-2|. 



Variat (immaturus) colore omnino ferrugineo. 



Hylurgus piniperda, Woll. [nee Linn.~\, Ins. Mad. 303 (1854). 

 , Id., Cat. Mad. Col 99 (1857). 



Habitat Maderam australem, sub cortice necnon in ligno Pini rarior. 



