APPENDIX. 41 



is not only more alutaceous (or less shining) but is somewhat more 

 thickly punctured, the punctures when viewed beneath the micro- 

 scope being invariably of a different character, or larger and less 

 simple. These features moreover are so constant that, after an ac- 

 curate examination of an extensive series of specimens, I cannot 

 believe that the present Aphanarthrum could possibly be regarded 

 as any state of the A. Jubce, which seems to retain its essential 

 characteristics in Lanzarote, Grand Canary, and Gomera (the only 

 islands in which it has been observed) free from any appreciable 

 change. 



Aphanarthrum canescens, n. sp. 



A. nigrum,subopacum,pilisbrevibus argenteo-cinereis demissis dense 

 vestitum; prothoracc subrotundato, grosse alutaceo punctisque 

 obscuris levissimis irrorato, apice concolori ; elytris dense sed baud 

 grosse subseriatim punctatis, obscure brunneo-ochreis (rarius 

 brunneo-testaceis), fasciis duabus nigris (srepius magnis suffusis 

 et interdum fere connuentibus) obscurius ornatis ; pedibus piceo- 

 testaceis, vel etiam tcstaceo-piccis. Long. corp. lin. - vix 1. 



a. (status typicus). Paulo major, prothorace ad apicem 2- (vel 4-) 

 undulato-subplicato (vix evidenter tuberculato). 



/3. simplex. Prothorace apice integro, ant interdum granulis duobus 

 minutissimis aegerrime observaudis armato. 



Habitat (in statu " a ") Gomeram et (in statu " /3 ") Canariam Gran- 

 dem, inter Euphorbias emortuas a DD. Crotch copiosissime 

 deprehensum. 



The rather shortly cylindric outline and obscure colouring of this 

 Aphanarthrum, which is densely clothed with an abbreviated, decum- 

 bent, whitish- cinereous, or almost silvery pile, and in which the elytral 

 fasciae are usually so much enlarged and suifused that they cover the 

 greater portion of the surface (which in some of the darker examples 

 is, consequently, almost black), will sufficiently distinguish it. Its pro- 

 thorax (which is closely and coarsely alutaceous, with the additional 

 punctules exceedingly light and shallow) is a good deal rounded off 

 behind, and concolorous at the apex, where it is armed (in the state 

 from Gomera, which I have treated as the normal one) with two 

 very minute tubercles ; and its legs are generally more or less dark- 

 ened. The specimens however from Grand Canary have the pair of 

 granuliform tubercles on the front edge of their pronotum obsolete, 

 being only now and then just appreciable even beneath the micro- 

 scope ; but I can see nothing about them to warrant the belief that 

 they are specifically distinct from the Gomeran ones, and particularly 



