1 78 STAPiiYLiNiD.^. [Mi/Jhena. 



form ; from M. infus'-afa it diff^n's by its long and dilated thorax and 

 long elytra, these parts being in the former insect unusually short and 

 narrow. 



T/l. DIasoni, Matth. Sooty black, clothed with blackish pubescence, 

 rather finely tuberculate ; head rather large, obtusely produced, mouth 

 concolorous, antennae rather short, sooty lilack, with the apical joint 

 acutely pointed ; thorax rather long, widest before base, with sides 

 rounded, and posterior angles nearly right angles ; elytra small, rather 

 narrower and much shorter than thorax, distinctly tuberculate, basal 

 margins very oblicjuely truncate towards suture ; hind body scarcely as 

 long as the rest of the body with the apex obtuse, and not lighter ; legs 

 rather short and robust, sooty black, with the tarsi short and stout. L. 

 lj-l| mm. 



Very rare ; taken by Mr. Matthews and his brother at Weston-on-the-Green, 

 Oxfordshii-e. 



This species differs from M. minuta in its smaller size, more robust 

 form, short and very obliquely truncate elytra, sooty black colour, dark 

 pubescence, and short robust pitchy black legs and antennae. 



"Efl. gracilicornis, Fairm. (? elongata, Kr., ? incisa, Rey). Deep 

 black, clothed with grey pubescence, very finely tuberculate or alutaceous ; 

 head rather large ; thorax long, widest before base ; elytra rather shorter 

 and narrower than the thorax ; hind body long and much attenuated, 

 longer than half the entire length of the body, apex concolorous; antennae 

 deep black, very long and slender ; legs long, pitchy black. L. 2^-3 

 mm. 



A sinofle specimen of this species (not two, as stated by Mr. Matthews, I.e. p. 39) 

 was taken by myself on the coast a little west of Ventnor, Isle of Wight, under stones 

 at the foot of a small waterfall in which Dianous was abundant. 1 have not been 

 able to find it since. 



T(l. Fowleri, Matth. Rather broad and depressed, deep black, 

 clothed with short blackish pubescence, distinctly turberculate ; head 

 large and broad, rather short, mouth concolorous, antennai rather short, 

 deep black, eyes rather large and prominent ; thorax rather long, longer 

 and rather broader than the head, distinctly tuberculate, widest before 

 the base, basal margin very much rounded and margined with the angles 

 rather obtuse ; elytra very short, much shorter and not wider than thorax, 

 distinctly tuberculate, emarginate at base near posterior angles ; "hind 

 body broad and conic, rather longer than head, thorax, and elytra com- 

 bined, all the segments black, with the edge of the ])enultimate segment 

 conspicuously white ; legs moderately long, pitchy black, with all the tarsi 

 yellow. L. 2|-3 mm. 



Very rare; Slierwood Forest, taken by Rev. A. Matthews. 



This species differs from all its allies in its purely conical form and 

 velvety black colour ; from M. gracilicornis it may be known by its much 

 broader form, and short robust antennae. 



