Coleoptera of the Canary Islands. 169 



extreme point, will serve to characterize it. The testaceous por- 

 tions of its elytra are browner than in the other Aphanarthra 

 (except the A. bicinctum) here described ; the hinder elytral fascia 

 is obsolete, and the anterior one is broad and more or less suf- 

 fused, and with its central loop continuous and well-defined — not 

 being broken up into two separate portions. It seems principally, 

 if not, indeed, entirely, attached to the decayed stems of the 

 Euph. canariensis, under which circumstances I have captured it 

 in Grand Canary, TenerifFe, Gomera, Palma and Hierro« 



22, Aphanarthrum bicinctum * Woll. 

 A. fusco-nigrum, pilis sat brevibus vestitum ; prothorace alu- 

 taceo dense granulato, antice producto vix pallidiore ; elytris 

 seriatim punctatis et transversira rugulosis, brunneo-testaceis, 

 fasciis duabus dentatis nigris (uni sc. magna et altera angus- 

 tiore subposticd) ornatis. 

 Long. Corp. lin. f — |. 

 Aphanarthum bicinctum, Woll., Ann. of Nat. Hist. (Ser. 3), v. 



165 (1860). 

 Habitat in ramis emortuis Euph. balsamifercB in ins. Lanzarota 

 et Fuerte Ventura, vulgare ; in Canaria et TenerifFa rarius. 



In the 6rownJs/j-testaceous hue of the lighter portions of this 

 insect, and the unbroken form of its front elytral fascia, it agrees 

 with the A. canariense. It is, however, much smaller than that 

 species, its pubescence is not quite so short, its hinder elytral 

 fascia is developed, and the apex of its prothorax is usually 

 darker and much less acuminated. Its habits also are different; 

 for whilst that insect is apparently confined (or, at any rate, nearly 

 so) to the Euph. canariensis, the A. bicinctum is attached princi- 

 pally to the E. bnlsamifera (and I believe, also, though more 

 sparingly, to the E. Regis-Jubce), in the stems of which I have 

 taken it abundantly both in the north of Lanzarote and near the 

 town of Santa Maria Betancuria in Fuerteventura. In Grand 

 Canary it is scarcer, and still more so in TenerifFe. 



23. Aphanarthrum bicolor,* Woll. 

 A. pallido-testaceum, subdiaphanum, pilis paucis erectis remote 

 vestitum ; prothorace subtillissime alutaceo sparse et minute 

 punctulato, antice producto necnon ad apicem ipsum acu- 

 rainato incrassato, linea dorsali, macula transversa subpostica 

 et lined transversa subantica (plus minus confluentibus suf- 

 fusis) nigris ; elytris remote seriatim punctulatis (punctulis 

 minutis), fasciis duabus profunde dentatis nigris (una sc. 

 magnd in medio duplici et altera angustiore subpostica) ornatis. 



