1904.] , 251 



The two species are very similar in dimensions, althougli frey- 

 qessneri sometimes attains a larger size than fulvicornis does. From 

 the specimens that have been through my hands I should say that 

 frryqessneri is very rare in the south, although I have specimens from 

 Ilfracombe and Tunbridge Wells, atid that it is the commoner species 

 of the two in Scotland. 



St. Ann's, Woking : 



October lOfh, 1904. 



OCYUSA NIGRATA, Faiem., 



A SPECIES OF COLEOPTERA NEW TO BRITAIN, WITH REMARKS 



ON THE OTHER BRITISH SPECIES OF OCYUSA. 



BY E. A. NEWBERY. 



In the autumn of 1900 I received, among some insects sent to 

 me by Mr. Claude Morley for names, a small "Staph." which was 

 unknown to me, but which, from the tarsal joints being 5 5.5. and its 

 general facies, I referred to Calodera or Oci/usa. The insect was put 

 aside and almost forgotten until the summer of the present year, when 

 an opportunity occurred of sending it to M. Fauvel. He returned it 

 to me as Ocyusa nigrata, Fairm., and the insect agrees well with 

 Fairmaire's original description (Faune Eut. Fr. Col., 8S0). 



Calodera nigrata, Fairm. 



Shiny black. Antennae dark brown, stout, gradually thickened, not passing the 

 base of the thorax ; 3rd joint almost half as long as 2nd ; the oihei-s nearly of 

 equal length; the last joint pyriform, rather acuminate, twice as long as the two 

 preceding. Head, thorax and elytra with the punctuation well visible, close, 

 stronger on the two latter, which makes them appear a little less shiny. Thorax 

 hardly broader than the head, narrower than the elytra, feebly narrowed in front, 

 slightly rounded at the sides, rather convex, having at its base in front of the scu- 

 tellum a small depression, well visible although of little depth. Elytra large, a 

 little longer than the thorax. Abdomen parallel, with the punctuation more remote, 

 shiny ; the first three segments convex, having a transverse impression at the base. 

 Femora brown, knees, tibite and lai'si light red. 



Obs.— This species resembles C. picina, but is easily distinguished, in addition 

 to the colour, by tlie thorax being narrowed in front and furnished with a depression 

 at base, by the absence of pubescence, the stronger punctuation, and the colour of 

 its legs. 



The five British species of Oci/usa may be separated thus: — 

 1. Elytra (with head and thorax) distinctly and roughly alutaceous ; thorax broader 

 than long, with shallow central furrow O. incrassata, Muls. 



