7410 Insects. 



Trichopterygidffi, viz., Micrus pulcbellus, Ptilium inquilinum, and last of all, and also 

 least, the species now under consideration ; and it was my earnest wish to have 

 named this species after its captor, but — I regret to say it— be has expressly forbidden 

 my doing so. 



PlILlUM IXQUILINUM. 



P. inquilinum, Ma'erlcel in litl. ; Eriehson, Nalurg. de Ins. Deuts. iii. 26. P. in- 

 quilina (Tricbopleryx), Gillm. P. canaliculatum, var., Maerk. P. hoemorr- 

 hoidale, Mots. P. formicaria, Mots. P. exarata, AUib. 



Three specimens of this insect were taken by Mr. Waterhouse some time ago, but 

 no note made of their capture. 



PllLIUM INSIGNE, nOV. sp. 



Long. Corp. i lin. Rufo-testaceura, pubescens, subtilius punctatum ; capite 

 magno prominulo, linea transversali post oculos ; pronoto transverso, capite 

 paulo breviori, ad basim validius contracto, lateribus rotuudatis, angulis 

 acutis, fovea magna transversali intra marginem posteriorem, et linea longi- 

 tudinali media profunde impvessa, cui utrinque est linea brevis parallela pari- 

 ter profunde impressa, sed margine et anteriori et posteriori longe remota ; 

 scutello modico, linea media impressa ; elytris ovatis, pronoto latioribus, api- 

 cibus acutis ; pedibus atque antennis pallidis, tibiis omnibus dilatalis, 



Pronoto insigniter caelato, atque tibiis dilatatis ab omnibus cognosci potest. 



Length J line. Rufous-testaceous, pubescent, finely punctured throughout ; head 

 large and prominent, with a transverse impressed line behind the eyes ; thorax trans- 

 verse, not as long as the head, much contracted towards the base, with the sides much 

 rounded and the angles acute, with a transverse depression near the hinder margin, 

 and a deep and wide longitudinal channel, on each side of which is a distinct and 

 deeply impressed Hue, not extending to either margin of the thorax, and parallel to 

 the central line ; elytra ovate, wider than the thorax, with their apical extremities 

 acute ; scutellum moderate, with a deeply impressed central line ; legs and antennae 

 pale testaceous, with all the tibiae much dilated towards the feet. 



This species may be known by the remarkable sculpture of the thorax, and by the 

 dilated tibiae. 



A single specimen was taken some years ago by Mr. Waterhouse, but the exact 

 locality of its capture is unknown. — A. Maltheivs ; Gumley, Market Harborough, 

 February 1, 1861, 



Muddy Investment of Georyssus pygmaus. — During a recent ramble in Cumber- 

 land I met with a small Coleopterous insect, whose economy is very peculiar. This 

 little beetle, the Georyssus pygmaeus of Fabricius, is of small size, bluish-black, very 

 strongly and distinctly sculptured. Each individual is completely coated above with 

 a thick cover of muddy sand, under which it totters about in a comical manner. How 

 this earthy cover is attained, and what purposes it can serve, is to me a puzzle. That 

 it is not the result of accident I am pretty certain, for all (and I caught upwards of 

 fifty) were so coated ; indeed, it fitted them so closely that I had first to hard rub, 

 and then wash my captures before mounting them. Even after forty-eight hours of 

 heavy rain their loads were still intact. They frequent, on hot sunny days, sloping 

 patches of damp muddy sand, sparely covered with herbage, and, being nearly of the 



