232 Mr. T. Vernon Wollaston on 
Guerinit of Allibert. But lately Mr. Matthews has altered 
his opinion (having met with the same exact form in 
England as the Madeiran one), and has come to the 
conclusion that it is, after all, distinct from the Guerin ; 
so that my original title of obscwna is again adopted by 
him. Hence I have no choice (in the face of so high an 
authority) but to suppress the name under which it is 
cited in the ‘Col. Atl.,’ and revert (as below) to that 
under which I first enunciated it in my Madeiran Cata- 
logue. Mr. Matthews’ British example was captured by 
himself, during the summer of 1867, in Sherwood Forest ; 
and in his published observations concerning it, he re- 
marks (Hnt. Month. Mag. v. 10; 1868) that it “belongs 
to a group of which the Guwerinii may be considered as 
the type, and all of which have pale or rufescent elytra, 
and the thorax scarcely dilated at the base.” And he 
subsequently observes ‘‘ when I mounted the specimen I 
had taken at Sherwood, I was much struck by the ap- 
pearance ofits sculpture; this led to further examination, 
and I found that, though differmg from the Guerinii, it 
coincided exactly in this respect with obscena, and that 
both also differed from G'werinii in the comparative length 
of the elytra, and a few other points of minor importance. 
I therefore feel no doubt that obscwna is distinct from 
Guerinii, and that Mr. Wollaston’s name must be restored 
to the species.” Mr. Matthews having given an emended 
diagnosis of the A. obscena, I may as well (as in the case 
of the anthracina) insert it as follows, adding at the same 
time its corrected synonymy :— 
Acrotrichis obsceena. 
A. oblonga, elongata, valde convexa, capite atque 
pronoto nigris, elytris nigro-castaneis, pilis brevibus 
flavescentibus parce vestita, capite magno, sat elongato 
prominulo, oculis vix prominentibus; pronoto modico, 
postice vix dilatato, tuberculis sat magnis, ordinibus in- 
terruptis dispositis, interstitiis nitidis, confertim reticu- 
latis ornato, lateribus levissime marginatis, leviter rotun- 
datis, angulis posterioribus acutis, vix productis ; elytris 
brevioribus, quadratis, haud attenuatis, ordinibus trans- 
versis, interruptis, sat profunde asperatis, sutura elevata, 
apicibus valde rotundatis; antennis brevioribus, nigro- 
piceis ; pedibus flavis. 
