Mr. T. V. Wollaston on Additions to Madeiran Coleoptera. 359 



bably only the rounded commencement of what is there regarded 

 as the second. Should my supposition prove to be correct, it 

 would throw both of these species into the genus Enneadesmus, 

 with which in most other respects they (but more especially 

 the X. humeralis) appear to agree ; whilst, in support of this 

 view, I perceive that the <e Apate Chevrierii " (which, as already 

 stated, I consider an Enneadesmus, and congeneric with the 

 Madeiran insect) has been actually registered in a late Catalogue 

 as a synonym of the " Xylopertha" humeralis, which makes it still 

 further probable that my suspicion is not altogether groundless. 



The feet of Enneadesmus, like those of the allied forms above 

 alluded to, are regarded as pentamerous ; but the basal joint is so 

 minute, and so closely connected with the second, that it is 

 sometimes scarcely possible to detect it, if, indeed, in all in- 

 stances it does really exist. In the Madeiran insect, after 

 mounting the tarsi in Canada balsam for the microscope, I can 

 just recognize this first articulation in the hinder pair ; but in 

 the front ones I am scarcely able to satisfy myself of its presence, 

 though, as it is said to exist in all these immediate genera, I 

 conclude that it is there. The tibiae are more or less denticu- 

 lated along their outer edge ; and the terminal spur, especially 

 on the anterior pair, is very large, broad, and articulated. I 

 have not been able to obtain a type of the Bostrichus 3-spinosus 

 of Olivier, for the reception of which the genus Enneadesmus was 

 constituted; nevertheless, I assume the Madeiran insect to be 

 distinct from it, as I can detect nothing in its outward structure 

 to warrant the above specific name. 



Enneadesmus barbatus t n. sp. 



E. cylindricus, rufo-piceus ; capite deflexo, ad latera et transversim in 

 fronte (in maribus saltern, et forsan in utroque sexu) longissime 

 barbato ; prothorace (prsesertim antice) pilis longis erectis paucis 

 adsperso, postice nitidissimo minute et parce punctulato, antice 

 mucronibus magnis asperate ; elytris piceo-testaceis postice infus- 

 catis, subriitidis, pube demissa brevi flavescente densius vestitis, 

 sat profunde subseriatim punctatis, ad apicem retusis, parte trun- 

 cata utrinque tuberculo parvo instructa necnon ad suturam in, 

 medio elevata divaricata ; antennis pedibusque plus minus pices- 

 centi-testaceis. 



Long. corp. lin. If -2. 



Habitat Maderam australem, a Dom. E. Leacock prope Funchal 

 primo detectus; necnon ad "Praia Formosa" pauca specimina 

 cepit Dom. Bewicke. 



E. cylindrical, and more or less rufo-piceous. Head much 

 deflexed, and with the hinder part (which is concealed beneath 

 the pronotum) longitudinally strigulose ; its sides and across its 

 forehead densely tufted (at any rate, in the male sex, if not in 



