Rhizopha()us.'\ clavicor>'Ia. 267 



R. politus, Hclhv. Oblong, ratlier broad and flat ; colour luiicolor- 

 ous black, shining ; head rather large, strongly impressed, finely punctured, 

 the punctuation being diffuse in front and close behind ; thorax sulMpiad- 

 rate, as long as broad, diffusely and finely punctured, with a space between 

 centre and base smooth ; elytra with plainly punctured strife, which 

 become evanescent towards sides and apex ; antennae and legs ferru- 

 ginous. L. 3-4 mm. 



Under bark of pines, and occasionally other trcesi; rare ; Lee, Kent, one specimen by- 

 sweeping (Douglas); Is'ew Forest (Cbanipion); Tiiiteru and Kooke, Moiiuioutbsbire ; 

 Hartlebury, Bewdley, and Salford Piiors (Blatcli); Sberuood Forest (Blatch and 

 Gorliani) ; Sti-etfortl, near Manchester (Hardy and Kestou) ; Scotland, Avicniore 

 (Champion). 



B. coerulcipennis, Sahib, [ameus, Richt.; cceruleus, Waltl.). Eather 

 short and broad ; head shining black, narrower than thorax, somewhat 

 finely punctured, antenna?, reddish with black club ; thorax black, not 

 longer than broad, narrower than elytra, with anterior and posterior 

 angles rounded, rather finely and thickly punctured ; elytra blue or 

 Itluish-green, metallic, with fine punctured stria?, sutural stria deej^ened 

 l)ehind ; legs ferruginous with femora brownish ; under-side lighter or 

 darker reddish-brown. L. 3 mm. 



One of the rarest of our British beetles; three specimens have occurred in or near 

 the Lover's Walk at Matlock, Derbyshire ; they were taken by Mr. Matthews, Mr. 

 Garneys, and Mr. Crotch ; the specimen obtained by the last-named gentleman Hew 

 from his beard on to the window after he had returned to the hotel ; one specimen has 

 also been recorded as taken by Mr. Taylor at Crosby, near Liverpool. 



TROGOSITID-a;. 



In the Munich catalogue nineteen genera and one hundred and forty- 

 four species are enumerated as belonging to this family, and these have 

 since been added to ; only seven genera represented by fourteen species 

 are found in Europe, and three genera containing one species each in 

 Britain ; we need not, therefore, discuss at any length the position of 

 the family, which has by many authors been included under the Kiti- 

 dulidae ; Lacordaire, however, appears to be right in separating them 

 from this latter family on the ground of the structure of the maxillte and 

 tarsi ; in the Nitidulida? these latter are usually 5-jointcd, with the 

 fourth joint very small ; in the Trogositida? they are 5-jointed, witli the 

 first joint very short, the second to the fourth moderate, and the last 

 joint very long. 



Our three genera belong to two very distinct tribes, which may be 

 distinguished as follows : — 



*o" 



I. Form elongate without flattened margins Teggositina. 



II. Form oval or rounded, very convex, with distinct flattened 



margins Peltina. 



