Mr. T. V. Wollaston on Additions to Madeiran Coleoptera. 49 



Gnathocerus maocillosus ? Fab. 



G. lineari-elongatus, pallide rufo-ferrugineus, subnitidus ; protborace 



subconvexo, subquadrato, subtilissime punctulato; elytris punctato- 



striatis, antennis pedibusque rufo-testaceis. 

 Mas mandibulis elongatis, angustis, curvatis, falcatis, porrectis ; fronte 



bituberculata, ad latera paulo subrecurvo-ampliata. 

 Long. corp. lin. 1J-H. 

 Habitat Maderam, sub cortice arborum laxo in ipsa urbe Funcha- 



lensi, Junio ineunte a.d. 1859 a meipso repertus. 

 Trogosita maxillosa? Fab. Syst. Eleuth. i. 155 (1801). 



G. rather smaller, narrower, and more linear than the G. cor- 

 nutus, being of almost equal breadth throughout, — the prothorax 

 being less expanded anteriorly, and the elytra with their sides 

 more strictly parallel ; also usually a shade paler than that spe- 

 cies, but with much the same sculpture. Head of the females a 

 little more rounded anteriorly than is the case in the G. cornutus, 

 and rather less elevated and expanded before the eyes (which, 

 unlike those of that insect, project perceptibly beyond this deve- 

 loped lateral portion) ; head of the males likewise with this lateral 

 portion scarcely more expanded than in the opposite sex (instead 

 of immensely dilated, as in the cornutus), and with two central 

 horn-like tubercles on the forehead (which are smaller and more 

 medial than those of the cornutus, and not touching at their 

 base the inner margin of the eye) : also with the mandibles in 

 the males greatly elongated, porrected, and incurved, but very 

 much narrower and more sickle-shaped than those of the cor- 

 nutus, and not so evidently re-curved towards their apex. Pro- 

 thorax squarer than in the G. cornutus, being less expanded in 

 front, and therefore straighter at the sides, and with the hinder 

 angles less obtuse. Elytra with the sides perfectly parallel, 

 instead of a trifle diverging posteriorly as in that species, and 

 somewhat more deeply striated. Limbs (particularly the an- 

 tennae) usually a shade paler than those of the cornutus. 



Several specimens of the present Gnathocerus were captured 

 by myself (and subsequently, in the same locality, by Mr. Be- 

 wicke) beneath the dead, loosely attached bark of the Plane-trees 

 in the Praca da Rainha, in Funchal, at the beginning of June 

 1859. Like the G. cornutus, it has doubtless been imported 

 into the island, but seems to have naturalized itself even more 

 completely than that species. Judging from two short observa- 

 tions in Lacordaire's recent volume on the Genera of the Hetero- 

 mera, in the ' Suites k Buffon' ("Les mandibules du male sont 

 beaucoup plus greles que chez la cornuta f and, " une seule es- 

 pece est decrite, I'dTrogosita maxillosa, Fab., Syst. Eleuth. i. 155," 

 besides the cornutus), 1 conclude that it is in all probability co- 

 incident with the Fabrician T. maxillosa, and have cited it 



Ann. §• Mag. N. Hist. Ser. 3. Vol. vi. 4 



