382 Mr. T. Vernon Wollaston on 



aliter costatis ; antennis pcdibusque breviiisculisj nifo-piceis; 

 tarsorum articulo antepeiuiltinio minus dilatato. 

 Long. Corp. lin. ] |. 



This little M'lcroxylohius, the smallest of the species here cha- 

 racterized (and apparently but slightly larger than M. Chevrolat's 

 M. Wcstwoodii), may be at once known from the following ones 

 by its comparatively undilated antepenultimate tarsal joint, its 

 subopaque, alutaceous surface, and the peculiar sculpture of its 

 elvtra, — which are free from punctures, but are roughened by a 

 set of minute, somewhat longitudinally-disposed tubercles, and 

 have a series of obscurely elevated costae, which are rather more 

 apparent towards either side than near the suture. Its elytra, 

 also, have their widest part a little behind the middle (which is 

 not the case in any of the species enumerated below) ; its rostrum, 

 too, is a little more convex on its upper side, its eyes are a trifle 

 more prominent, its prothorax is longer and straighter (with the 

 sculpture much more dense), and its four hinder legs are somewhat 

 shorter than in its allies described below. Like the M. lucifiigus, 

 it is black ; but it is more piceous than that insect, and has no 

 trace whatever of a metallic tint, even on its elytra. There was 

 but a single specimen of it amongst Mr. Bewicke's captures at St. 

 Helena. 



23. M'lcroxyloblus ludftigus, n. sp. (PI. 18, fig. 6.) 

 M. fusiformis, niger, subnitidus ; capite i-ostroque confertim 

 et (preesertim in foeniinis) profunde punctatis (hoc robusto 

 et ad apicem in medio leviter depresso ; in maribus sub- 

 triangulari, basi lato) ; prothorace convexo, profunde con- 

 fertim et regulaiiter punctato, ad latera rotundato ; elytris 

 obsoletissime subesnescentibus, subconvexis, rugulosis, leviter 

 punciato-striatis, interstitiis latis confertim punctatis; an- 

 tennis pedibusque robustis, breviusculis, piceis, illarum ba^i 

 rufescentiore. 

 Long. corp. lin. 2. 



A large and well-marked species ; and one wOiich may be 

 readily distinguished by {inter alia) its rather thickened limbs, 

 black hue (there being only the fiiintest possible tinge of seneous 

 just traceable on the elytra), densely and deeply punctured, 

 though but slightly shining, surface (which, however, is less 

 opaque than in the M. lacertosus), and by its subrugulose elytra. 

 Two specimens of it (male and female) were collected at St. 

 Helena by Mr. Bewicke. 



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