2G2 CAN A EI AN COLEOPTERA. 



indeed entii-ely) confined to the decayed stalks of the Euphorbia cana- 

 riensis, and I have consequently observed it in those islands only 

 where that curious plant still remains — that is to say, in all of them 

 except Lanzarote and Fuerteventura, in which (if indeed it ever 

 existed there at all) I do not remember to have ever met with the 

 E. canariensis. But in Grand Canary, Teneriffe, Gomera, Palma, and 

 Hicrro I have captured the species, more or less abundantly. In 

 Teneriffe it was found likewise by Dr. Crotch. 



§ II. Pronotum antice ininus produchim, caput Qongiusculum, 



fere subrostratwn) hand occultans. 



423. Aphanarthrum luridum. 



Aphanarthrum luridum, fVolL, loc. cit. 1G3 (1860). 

 Hahitat Teneriffam et Gomeram, in plantis Euphorhke canariensis 

 putridis degens. 



The present species and the two following ones differ from the 

 rest of the Aplianarthra here enumerated in having their pronotum 

 only sKghtly produced in front, so that their heads (which are some- 

 what longer and more rostrate) are less concealed from view. In 

 their external details, however, they all three differ very considerably 

 inter se, — the A. luridum, in its comparatively large size and testa- 

 ceous colour, being, to all appearance {prima facie), a true Apha- 

 narthrum ; whilst the second, in its diminutive bulk, dark-brown 

 surface, and less parallel outhne, has a totally different aspect ; and 

 the third, which is blacker still and relatively more elongate, recedes 

 so completely, both in its fades and habits, from the Aphanarthra, 

 that, were it not for the exact form of its antennae with their biarti- 

 culated funiculus, I should have totally failed to recognize it as a 

 member of this groiip. 



In its minor details, and apart from its less produced prothorax 

 and rather square, subrostrate head, the A. luridum may be known 

 by its pale lurid-testaceous hue, — a longitudinal dash on the hinder 

 disc of each of its elytra (representing the anterior fascia), the dorsal 

 line of its prothorax, a spot on either side of the latter, and a suffused 

 portion in front being alone more or less dark. It is sparingly studded 

 with long and erect hairs ; its punctation is fijie ; and (which is one 

 of its most distinctive features) its elytra are suddenly shortened, or 

 slightly truncated obliqueh/, at their apex. 



The A. luridum seems to be confined (so far as I have observed 

 hitherto) to the rotten plants of the Euphorbia cananensis, — in which 

 situations I have taken it on the mountains above S*" Cruz of Tene- 



