228 



MANDIBULATA.^COLEOPTERA. 



B. Thorax with four impressions on the disc, two on each side. 



Sp. .5. a?ratus. A^jgy-o-wiwi/s, vitiJus, f/mrcice pitiiciis discoidalihus quatuor, 

 ehjfn's glahris ptnictaiis. (Long. corp. .5 lin.) 



St. feratus. Kirb)/ MSS. — Ph. icratus. Sieph. Catal. 279. iVo. 2960. 



Shining hrassy-hlack : head suborbiculate, glabrous^ very smooth, with four 

 punctures, placed transversely, in front : thorax glabrous, very smooth, 

 with four punctures on the disc, placed two on each side of the centre, three 

 others placed in a triangle on the anterior angle, and others on the posterior 

 margin ; the disc brassy, with a slight violaceous tint : elytra glabrous, 

 brassi/, punctured : abdomen slightly pilose, with the penultimate segment 

 very narroAvly edged with white : legs and antennae black. 



Taken in Suffolk ; and occasionally within the metropoHtan 

 district. 



C. Thorax with a quadripunctate series of dorsal impressions on each 



side of the middle. 



a. With metallic, brassy, or blue elytra. 



Sp. 6. puncticollis. Niger, nitidus, elytris viridi-ceneis, capite lato orbiculato. 

 (Long. corp. 3§ — 5 lin.) 



St. puncticollis. Kir by MSS.— Vh.. puncticollis. Steph. Catal.279. No. 2961. 



Slack, shining: head broad, orbiculate, as large as the thorax: the latter 

 smooth, luithfour deep impressions on each side of the disc, one on the margin 

 and two towards the sides: elytj^a brassy-green, delicately punctulated : 

 abdomen wide, rather deeply punctured, and with a strong margin : legs 

 and antennae black. 



In one sex the head is rather narrower than the thorax. 



Abundant throughout the metropolitan district ; also found not 

 uncommonly in Norfolk and Suffolk, Devonshire, &c. "Near 

 Swansea, and on Sketty-burrows." — X. W. Dillwyn, Esq. 



Sp. 7. politus. JEneo-niger, capite thoraceque politis, elytris aneis nitidis, 



capite ovato, thorace angustiori. (Long. corp. 3^ — 5 lin.) 

 St. politus. Linne — Ph. politus. Steph. Catal. 279. No. 2962. 



Brassy-black, shining, rather slender : head ovate, narrower and smaller than 

 the thorax, glossy : th6rax also glossy, with a double row of four impres- 

 sions on the disc, two on the margin and three on each side : elytra brassy, 

 and shining : abdomen black : legs and antennae the same. 



The elytra are sometimes of a brownish-brass, and the legs and antennae 



fuscous. 

 The head is smaller in one sex, and the insect varies in size. 



Also very common throughout the vicinity of the metropolis, and 



