166 Mr. T. Vernon Wollaston on the Ewphorhia-infesiing 



three of the Canarian species the antennae of which I have 

 mounted in balsam for the microscope, and which are unquestion- 

 ably congeneric with the Madeiran oncf So that, all things con- 

 sidered, I think it will be safer to regard the funiculus of Apha- 

 narthrum as /?«-articulate, — with the qualification, however, that in 

 one species, at all events, there are indications, beneath a high 

 microscopic power, of what may possibly be an additional joint at 

 the base of the capitulum. When thus enunciated, the diagnosis 

 will better accord with what is likely to be observed; whilst the 

 fact of an extra articulation being faintly indicated in one of the 

 exponents will leave it an open question whether the funiculus 

 may not in reality be triarticulate, — even though but two joints 

 are distinctly traceable in the various members of the group. 



As for the descriptions of nine of the species enumerated below 

 and the diagnostic observations on them, I can scarcely do better 

 than extract them verbatim from my Paper " On the /Iphanarthra 

 of the Canary Islands," published in the March Number of the 

 " Annals of Natural History" for last year ; the A. armatum is a 

 new species. 



1 8. Aplianarthrum luridum,* Woll. 



A. lurido-testaceum, pilis longiusculis suberectis sparse vesti- 

 tum ; prothorace sublsevi punctulato, antice minus producto 

 nigrescente, linea dorsali et stigmate utrinque posito plus 

 minus nigrescentibus ; elytris leviter seriatim punctulatis et 

 transversim rugulosis, postice leviter truncatis, plagA discali 

 nigrescente (in singulo positi) ornatis. 



Long. Corp. lin, 1. 



Aphanarthrum luridiim, Woll., Ann. of Nat. Hist. (Ser. 3), v. 

 163(1860). 



Habitat in ramis emortuis Euphorbia: canariensis in ins. Tene- 

 rifFd et Gomerd, hinc inde frequens. 



In their somewhat larger size, the present species and the fol- 



t Feeling it possible, however, that a minute third articulation might become 

 visible under a higher power of the microscope than that which I myself pos- 

 sessed, I transmitted lately these four antennae to Mr. Waterhouse, for inspec- 

 tion beneath the admirable instrument at the British Museum ; and I may add, 

 that his conclusions were precisely the same as my own, — namely, that the funi- 

 culus was certainly hiarticutate, but that in the Madeiran A. Euphorbia there 

 were obscure indications of what might possibly be an additional (or third) joint, 

 between the second one and the club. In the figure given in the " Insecta Ma- 

 derensia" this third articulation (if indeed it be a true one) is made much too 

 distinct ; nor is there any indication of the funiculus being obliquely implanted 

 into the capitulum, — a structure which causes this supposed joint to appear on 

 the surface (i. e. just within the base) of the latter. 



