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



XXXVIII. On Additions to the Madeiran Coleoptera. 

 By T. VERNON WOLLASTON, M.A., F.L.S. 



[Continued from p. 267.] 



Fam. Bostrichidae. 



Genus ENNEADESMUS. 



Mulsant, Mem. de PAcad. de Lyon (2ieme serie), Scien. i. 208. 



The detection of the present genus near Funchal introduces 

 a new family into the Madeiran Catalogue, viz. the Bostrichida. 

 Perhaps, however, properly, Rhyzopertha should also be regarded 

 as a member of it, in which case it should have been long ago 

 acknowledged in our fauna : nevertheless, since that genus is 

 not a very typical exponent of the group, and has likewise many 

 points in common with the Cissidae, I included it in the latter 

 family when compiling the ' Insecta Maderensia/ But now 

 that Enneadesmus must be appended to the list, I would regard 

 it, along with Rhyzopertha, as representing an additional family 

 the Bostrichidce. With respect to the structural features of 

 the insect described below, they seem to me to accord with those 

 of Enneadesmus, which differs principally from Xylopertha (to 

 which it is nearly related) in having its antennae composed of 

 only nine joints, one of the five minute ones between the 

 second and the very large, loosely-connected, triarticulate club 

 (and which are so evident in Psoa, Apate, Sinoxylon, Xylopertha, 

 and Bostrichus) having disappeared. I have a closely allied 

 beetle in my possession, communicated from Milan a few years 

 ago, by the Abbe Stabile, under the title of " Apate Chevrierii, 

 Villa," which seems to me to belong to the same genus as the 

 Madeiran one, its antenna being exactly similar to those of the 

 E. barbatus ; so that, if it be correctly named, there is apparently 

 some confusion in the recent European catalogues, which assign 

 that species to the genus Xylopertha, in which the antennae are 

 10-articulate. Be this, however, as it may, the Madeiran insect 

 is certainly different specifically from the Milan one; and I 

 regard it, at any rate, as belonging (for the reason above cited) 

 to Mulsant' s Enneadesmus. And I may here, perhaps, just add 

 that the two injects described by M. Lucas, in his work on the 

 Coleoptera of Algeria, as " Xylopertha appendiculata " and " hu- 

 meralis," require, unless I am mistaken, to have their antennal 

 details again carefully revised ; for I cannot but suspect that a 

 joint too many may have been assigned to the antennae of each 

 of them, those of the former having, according to the figure, 

 their second articulation divided by a central line in a manner 

 quite unprecedented in any of the allied forms ; whilst those of 

 the latter are represented with a small basal joint, which is pro- 



