British Species of Corticaria. 143 



ally contracted behind ; the posterior angles obtuse ; the hinder 

 margin rounded. Elytra at the broadest part more than twice 

 the breadth of the thorax, of a shortish ovate form, with the 

 humeral angles rather prominent and rounded. 



This insect stands in Stephens' Cabinet under the names " zm- 

 pressa," pallida (immature specimens) and similala ; the last being 

 regarded as the similala of Gyllenhal, has given rise, it would 

 appear, to the introduction of that author's description into the 

 " Illustrations." I have not met with any Corticaria which I 

 could identify with Gyllenhal's description of Latridius similatus. 

 Both in Stephens' and Kirby's Collections immature specimens of 

 this insect are referred to the Corticaria pallida of Marsham. 



10. Corticaria IVollastoni. C. oblongo-ovata, convexa, picea, 

 antennis pedibusque testaceis ; thorace angusto, subqua- 

 drato, lateribus ante medium paulo rotundato-ampliatis, 

 angulis posticis rectis, supra crebrius punctato, postice 

 transversim impresso ; elytris fuscis,oblongo-ovatis, hume- 

 ris prominulis, punctato-striatis, interstitiis convexiusculis, 

 seriatim pilosis. 



Long|-|lin. 



This species bears considerable resemblance to the C. gibbosa, 

 but is much larger, and proportionately more elongate; the pos- 

 terior angles of the thorax form right angles, the interstices of the 

 striae of the elytra are impunctate or very nearly so. 



Head with the upper surface convex, rather distinctly but not 

 very thickly punctured, the eyes prominent, giving to the head a 

 width which is but little less than that of the thorax ; antennse 

 testaceous, the club only somewhat tinted with fuscous, the joints 

 rather more elongate than in C. gibbosa. Thorax but little 

 broader than long, convex, the sides rounded on the fore part, 

 but straight near the posterior angle, the broadest part rather in 

 front of the middle, the fore part truncate, the hinder margin 

 produced and rounded in the middle, the surface rather thickly 

 punctured, and with a transverse depression behind, which is in- 

 terrupted in the middle ; elytra ample, oblong-ovate, with the 

 humeral angle a little prominent, at the broadest part twice as 

 broad as the thorax ; paler than the head and thorax, but with the 

 suture and outer margin more or less dusky ; convex, and by no 

 means strongly punctate-striate, the interstices at the base slightly 

 convex, and, with a very strong lens, show a few scattered, and 



