7066 Insects. 



more expressive name of the two. The genus created by this sepa- 

 ration may be characterised thus : 



Elachys, nov. gen. 



Trichopteryx, p. Heer ; Erichs. ; Faune Frang. Alihert ; Haliday. 

 Titan {Newman), Matth. Zool. 6110. 



Antennae articulis undecira, basali raaximo cylindrico, secundo 



magno, orbiculato, sex sequentibus fere sequalibus, tribus ultirais 



majoribus, rotundatis, apicali acuminato ; elytra abbreviata, 



quadrata, abrupte truncata ; pedes breviores, coxis omnibus 



magnis, posterioribus baud laminatis. 



Hoc genus multo magis Ptilii quam Trichoptericis formam gerit ; 



ab illo differt elytris brevissimis, truncatis, et coxis dilatioribus ; ab 



hac autem tota forma dissimili, et coxis baud laminatis. 



Plilium brevicolle, nov. sp. L. c. ^ lin. Oblongo-ovatum, pro- 

 fundissime ac rugose punctatum, sparsim pubescens, piceo- 

 brunneura, capite magno, tribus foveolis longitudinalibus in 

 frontem indistincte impressis ; prothorace transverse, lalo, capite 

 multo breviori, lateribus parum rotundatis, angulis obtusis ; 

 scutello magno triangulari ; elytris hand truncatis, ad humeros 

 prothorace angustioribus, posterius parum dilatatis ; pedibus et 

 antennis robustis, testaceis. 

 Hjec species singularis, capite magno, prothorace brevissimo et cor- 



pore rugoso ab omnibus aliis facillime potest cognosci. Capta prope 



Weston in agro Oxoniensi. 



Oblong-ovate, very coarsely punctured throughout, pitchy brown, 

 sparingly pubescent ; head very large, with three obscure longitudinal 

 impressions on the forehead ; thorax transverse, wide and very short, 

 not so long as the head, with the sides somewhat rounded and the 

 angles obtuse ; scutellum large, triangular ; elytra entire, rather 

 narrower than the thorax at the shoulders, but wider towards the 

 apex ; legs and antennae very robust, testaceous. 



This very distinct and curious-looking species is, with the exception 

 of unusually minute examples of P. minimum, the smallest Coleop- 

 terous insect I have ever seen. It is more'nearly related to P. Kunzei 

 than to any other of the genus, but may be readily distinguished from 

 them all by the peculiar shape of the head and thorax, and the extreme 

 roughness of its punctation. A single specimen only has yet occurred, 

 taken by myself in Oxfordshire some years ago. 



