1 80 Mr. T. Vernon Wollaston on the E/iphorbia-infe sting 



postice subaequaliter constricto ; elytris lineis plus minus 

 fractis nigrescentibus longitudinaliter ornatis ; antennis pedi- 

 busque annulato-variegatis. 

 Long. Corp. lin. 4| — 7A. 

 Cerambyx unnuUcornis, Brulle, Webb et Berth., Hist. Nat. des 



lies Can. (Col.) 62, pi. 1, fig. 3 (1838). 

 Habitat Euphorbias emortuas, in ins. TenerifFa et Hierro baud 

 infrequens. 



The present species and the following one are very nearly 

 allied, both in size and external contour ; nevertheless the 

 B. annulicornis may be known from the albidus by the much 

 yellower hue of its (denser) pubescence, by its head being more 

 brightly variegated, and its pronotum broadly pale down the 

 centre, — the sides being dark. Its elytra, also, have a much less 

 tendency for the small, rounded, paler spots which are generally 

 pretty evident in that insect; whilst, on the other hand, the 

 darker longitudinal lines are somewhat more evident, and usually 

 less broken. Its surface, likewise, beneath the pile, is more 

 TM/b-piceous ; and its lateral prothoracic spine, although large, is 

 rather less powerfully developed. The two species, however, are 

 so nearly akin, that had one but single specimens to judge from 

 they might have been almost regarded as phases of each other ; 

 nevertheless out of fifty-six examples in my possession (twenty 

 of which belong to the B. annulicornis and thirty-six to the 

 albidus) there is certainly nothing at all connective between the 

 two. I may add that, during a late visit to Paris, I compared 

 these insects with M. Brulle's original types at the Jardin des 

 Plantes, and am quite certain therefore of the correctness of my 

 identification of them. The B. annulicornis appears to be more 

 abundant in the western islands than in the eastern ones, of the 

 Canarian Group. At any rate I have not observed it hitherto in 

 Lanzarote, Fuerteventura and Grand Canary ; but have captured 

 it (not uncommonly) out of the dried Euphorbia-stems on the 

 mountains above Santa Cruz of Teneriffe, as well as in the lower 

 regions of El Golfo on the west of Hierro. 



36. Blabinotus albidus* Brulle. 



B, cylindricus, piceus, pilis demissis albidis dense nebulosus et 

 longioribus suberectis obsilus ; prothorace ad latera spind 

 media maxima armato, antice et postice subaequaliter con- 

 -stricto ; elytris punctnlis albidis plus minus distinctis irroratis 



