CANARIAN COLEOPTEEA. 263 



riffe (in the direction of Las Mercedes), and (more abundantlj^) on a 

 hill-top in Gomera, immediately to the north-west of San Sebastian. 

 In this latter locality it was found also by Mr, Gray ; and in Tene- 

 riife it has been captured subsequently by Dr. Crotch. 



424. Aphanarthrum pusillum. 



Aphanartkrum pusillum, WolL, he. cit. 167 (1860). 



Habitat Canariam, TeneriiFam et Gomeram, in iisdem locis ac prse- 

 cedens, ramos Euphorbice canariensis putridos destruens. 



This curious httle insect may be known from all the AplumartJira 

 which precede it by its very minute size and uniformly dark-broAvn 

 hue, by its triangular head and laterally rounded prothorax, and 

 by its lightly sculptured surface, which is sparingly beset with soft 

 erect pUe. Like the (comparatively gigantic) A. kiridum, it appears 

 to be peculiar to the rotten stalks of the Euphorbia canariensis ; in 

 which situations I have taken it, in company with that species, in 

 the two localities above alluded to — of Teneriffe and Gomera ; as 

 also in the great crater of the Bandama mountain, in Grand Canary. 

 In Teneriffe it was found Ukewise by Dr. Crotch. 



425. Aphanarthrum concolor, n. sp. 



A. nigrum vel subfusco-nigrum, subnitidum, pilis erectis et demissis 

 fulvescenti-cinereis obsitum; prothorace distincte punctate et (oculo 

 fortiter armato) minute reticulate ; elytris striato-punctatis ; an- 

 tennis testaceis ; pedibus piceo-testaceis. — Long. corp. lin. \ix |. 



Habitat Teneriffam et Palmam, sub cortice Pini canarieyisis degens. 



As already implied, the present diminutive insect (which, however, 

 is not quite so small as the A. jiusillmn) is so aberrant as an Aplia- 

 narthrmn that it is with reluctance I am compelled to regard it as a 

 member of that group. In its uniformly dark surface (which, except 

 occasionally from immaturity, is scarcely at aU diluted in hue), as 

 well as in its general contour and rather distinct sculpture, it has 

 much the appearance of an excessively minute Hylastes ; whilst in 

 its habits, on which I lay far greater stress, it recedes entirely from 

 the whole of the preceding species, whose exclusive attachment to 

 the various Euphorbias is one of their most remarkable peculiarities. 

 Nevertheless, after a careful examination of its antennae, they seem 

 to me to be moulded on precisely the same type as those of the nor- 

 mal Aphanarthra* ; nor is there any difference in its tarsi that I can 



* As stated in my Paper " on the Eiqyhorbia-inkstmg Coleoptera of the Cana- 

 ries," the fimiculus of Aphanarthrum is not distinctly more tlian biarticulate. 

 There may possibly be a third (excessively minute) joint wlaich is rendered in- 



