Mr. T. V. Wollaston on the Aphanarthra of the Canaries. 165 



(in proportion to its size), together with its extremely short 

 pubescence, its dense (but not very coarse) elytral sculpture, 

 and the much acuminated apex of its prothorax, which is very 

 perceptibly thickened (with a slight tendency to be recurved) 

 at its extreme point, will serve to characterize it. The testaceous 

 portions 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 fascia is obsolete, and the anterior one is broad and more or less 

 suffused, 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 cap- 

 tured it in Grand Canary, Teneriffe, Gomera, Palma, and Hierro. 



4. Aphanar thrum bicinctum, n. sp. 



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

 dense granulate, antice producto vix pallidiore ; elytris seriatim 

 punctatis et transversim rugulosis, brunneo-testaceis, fasciis duabus 

 dentatis nigris (una sc. magna et altera angustiore subpostica) 

 ornatis. Long. corp. lin. f-f. 



Habitat in ramis emortuis Euph. balsamiferee in ins. Lanzarota et 

 Fuerteventura, vulgare. 



In the brownish 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 

 principally to the E. balsamifera (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 S ta Maria Betancuria in Fuerteventura. 



5. Aphanarthrum bicolor, n. sp. 



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

 tum ; prothorace subtilissime alutaceo sparse et minute punctulato, 

 antice producto necnon ad apicem ipsum acuminate incrassato, 

 linea dorsali, macula transversa subpostica et liuea transversa sub- 

 antica (plus minus confluentibus suffusis) nigris ; elytris remote 

 seriatim punctulatis (punctulis minutis), fasciis duabus profunde 

 dentatis nigris (una sc magna in medio duplici et altera angus- 

 tiore subpostica) ornatis. 



Variat lineis maculisque plus minus fractis, disjunctis, rarius sub- 

 obsoletis. Long. corp. lin. f-1. 



Habitat in ins. Tenerift'a, Gomera et Hierro in ramis Euphorbiarum 

 emortuarum (precipue E. piscatorite), sat frequens. 

 A most distinct and beautiful Aphanarthrum, readily known 



