INSECTA MADERENSIA. 91 



dente trifido armatse. Maxilla bilobfe : lobo externa articulato angusto, apice acutissime 

 uncinate : interno breviore, ad apicem acuto iuciirvo imcinato, iutus spinuloso ciliato. Palpi 

 maxiUares \vs. longiusculi, articulo ultimo minuto subulato : lahiales (in tj-picis brevissimi, sed 

 in specie Maderensi) parum elongati, articulo primo brevissimo, seeundo longissimo btflexuoso, 

 ultimo brevi subovato. Mentum amplum subquadratum, margine antico rotundato. Ligula 

 brevis lata, apice vix emarginata. Pedes subnatatorii, robusti, antici breviusculi : femoribus sub- 

 cylindi'icis : tibiis rectis spinosis, aniicis apicem versus Icviter dilatatis : tarsis baud cibatis, 

 articulo primo brevissimOj seeundo arete connate, quinto elongato curvato. 



The little genus Ochthehhis may be known by its 9-jointed antennae, by its 

 subcorclate and more or less foveolated protborax, and by its comparatively sbort 

 maxillary palpi, with tbeir minute, subulated terminal joint. I have not been 

 able to detect more than a single species in Madeira, \vi. — 



72. Ochthebius 4-foveolatus. 



O. eloDgato-ovatus nigro-seneus parce pubescens, protborace subcordato canaliculato utrinque linea 

 longitudinali interrupta, foveolas duas eiSciente, instructo, lateribus rugose inaequaliter impressis, 

 elj^tris profunde punctatis baud striatis, antennis pedibusque rufo-testaceis. 



Long. corp. lin. 1^^. 



Ochthehius 4:-foveoJafus, Motsebulsky, in litf. 



Habitat jMaderam borealcm, — in rivulo Ribeiro de Sao Jorge dicto, baud procul a Sancta Anna, d. 17 

 Mai. A.D. 1850 a meipso copiosissime inventus. 



O. elongate-ovate, dark feneous, sbining, and very sparingly pubescent ; clotbed beneath with a fine, 

 white, decumbent pile. Head with two very deep rounded depressions on the forehead. Pro- 

 thorax subcordate ; with a dorsal channel, and two short, deep, distinct fovese on either side, 

 placed one over the other as though formed by an interrupted longitudinal line ; rugosely and 

 deeply impressed towards the lateral margins (a small portion of which behind is transparent and 

 white), where there are indications of one or two other abbreviated, though irregular fovese. 

 Elytra coarsely punctured, but not punctate-striated. Legs, antenna and palpi rufo-testaceous. 



Clearly the Madeu*an representative of the O. punctatus of more northern lati- 

 tudes, although with too many distinctive characters of its o^\^l to allow of its 

 being identified with that species. It differs from it, principally, in its greater 

 bulk and comparatively broader outline, in its more brassy and less pubescent 

 svu'face, in its legs being longer and more robust, and in its protborax being 

 altogether larger and more distinctly foveolated. I have observed it hitherto only 

 in the north of the island; where, on the 17th of May 1850, I captm-ed it in 

 the utmost profusion in the Hibeu'o de Sao Jorge, close to the ascent of the old 

 road to Santa Anna. I have retained the name which was proposed for it by 

 M. Motsebulsky during his late visit to England. 



N 2 



