INSECTA MADERENSIA. 501 



381. Opatrmn errans, Woll. (Tab. XI. fig. 3.) 



O. nigrum vix pubescens, prothorace tuberculis crebre obsito, ad latera rotundato ad basin leviter 



sinuato, elytris parallelis punctato-striatis. 

 Long. Corp. lin. 3i-4^. 



Habitat Maderam, rarior : exemplar in museo Loweano (a Dom. Heinecken olim captum) conservatur, 

 alterum in moutibus prope Curral das Freiras vere novo a.d. 1848 egomet deprehensi, et duo 

 speeimina nuperrime communicavit Dom. Rousset. 



O. black, and almost free from pubescence. Head punctui-ed. Prothorax uniformly beset with 

 tubercles, or large elevated granules ; not quite so short as in the 0. fuscum, and with the sides 

 more rounded (the broadest part being about the middle) ; and, also, less sinuated at its base. 

 Elytra more parallel than in that species, rugulose (especially towards the shoulders, — where it 

 is thickly studded with minute tubercles, which are somewhat smaller and acuter than those on 

 the prothorax), and deeply punctate-striated. Antennee (except their extreme apex, which is 

 ferruginous), and leffs, dark piceous. 



Apparently very scarce, four specimens only having hitherto come beneath my 

 notice. One is in the collection of the Rev. R. T. Lowe ; another was captm-ed by 

 myself in the interior of the island, near the edges of the Cm-ral das Freiras (about 

 3500 feet above the sea), during the spring of 184.8 ; and two more have been 

 recently communicated by M. Rousset, — whose researches have made so many 

 additions to the Entomological fauna of the Madekan group*. Judging from the 

 small data which I possess concerning its habits, it would seem to be more espe- 

 cially confined to the higher altitudes ; and it may perhaps therefore be regarded 

 as the mountain representative of the O. fuseimi. 



* The following description of a new Opatrum from the Salvages, somewhat allied to the O. errans, 

 may be inserted here. A single specimen has been communicated to me by T. S. Leacock, Esq., of 

 Funchal, — by whom it was discovered on the conical island known as the " Great Piton," dui-ing his late 

 expedition to those remote rocks : 



Opatrum dilatatiun, Woll. 

 0. nigrum vix pubescens, prothorace tuberculis minutissimis crebre obsito, ad latera valde rotundato- 



ampliato ad basin leviter undidato, elytris subovatis crenato-striatis. 

 Long. Corp. lin. 3f . 



Habitat in insulis " Salvages " dictis, a Dom. Leacock benigne communicatum. 



0. black, and almost free from pubescence. Head and prothorax beset with exceedingly minute elevated 

 points, or granules ; the latter large aud wide, the sides being much roimded and greatly dilated 

 about the middle, and undulated along its basal margin. Elytra less parallel than in either of the 

 Madeiran species, being almost ovate ; rather rugidose, and deeply crenate-sti-iated. Antenncs 

 (except at their base and apex, which are paler), and legs, dark jjiceous. 



A-n exceedingly distinct species, differing from both of the Madeiran ones in the minute granules of its 

 head and prothorax (the latter of which is greatly expanded in the middle, and has the sides consequently 

 much roimded), aud by its more ovate aud crenaie-striated el}i;ra. 



