BY THE REV. T. BLACKBURN. 137 



Wasin latiori vix longiori, supra sat fortiter minus crebre 

 ruguloso vix distincte granulate, lateribus a basi ad medium 

 leviter divergentibus delude fortiter rotundatim convergenti- 

 bus, margine antico sat angusto sat fortiter rotundato- 

 producto ; scutello dense albo-squamoso ; elytris a basi 

 retrorsum leviter angustatis, leviter striatis, striis puncturis 

 ocellatis raodicis minus crebre notatis, interstitiis modice 

 convexis sat sequalibus, humeris rotundatis extrorsum sub- 

 prominulis ; tibiis anticis intus ante apicem fortiter rotundato- 

 emarginatis; extus ad apicem dilatatis; antennarum funiculi 

 articulo 2° quam 1"^ sat breviori, 3'° sequali. 



[Long. 3|-4l, lat. l|-2 lines. 

 In a fresh, biightly marked specimen the three pale lines on 

 the pvothorax are sharply defined and the elytra are very 

 conspicuously mottled with blackish brown and ashy scales, — the 

 blackish scales predominating round the scutellum and about the 

 middle of the lateral portions, and in other parts being very 

 evenly mixed in small patches with the ashy scales. But the 

 markings cannot be at all relied upon as a character, as in most 

 examples they are very indistinct, the surface being nearly black 

 with some obscure ashy shadings, or even of a uniform dusty 

 brown, as though covered with an indumentum. The best 

 character, I think, lies in the form of the front tibiae, which are 

 short and stout, evidently widening from the base to below the 

 middle, and then roundly scooped out on the inner side between 

 the point and the apex in such fashion that the inner margin 

 immediately below the middle appears almost like a very blunt 

 tooth ; this chai^acter at once separates this species from the others 

 known to me of the genus {e.g., cristata, Kirby, granulosa, Fahrs., 

 myrrhata, Pasc). The nearest ally of R. tibialis is, I think, 

 cristata, Kirby. Compared with that species the present one 

 ditfers chiefly by the crest of its head, considerably smaller and 

 especially less prominent at its vertex, though of similar shape 

 and squamosity, by its rostrum very evidently narrower and 

 more parallel (though otherwise very similar), by its differently 

 shaped front tibiae, and by the absence of a short nitid carina on 



