206 MANDIBULATA. — COLEOPTERA. 



Somewhat resembling Ap. phseopterus ; but from that insect it differs in being 

 considerably larger, in having the clypeus punctate, the thorax more deeply 

 punctured in proportion to its bulk : the elytra of a darker hue, and the legs 

 more or less fuscous :— from the allied dark-coloured species, the pale lateral 

 margins of the thorax distinguish it. 



Taken near London ; at Brighton, Shoreham, &c. " Near Whit- 

 burn, Northumberland." — W. C. Hezoitson, Esq. 



Sp. 50. tristis. Niger, clypeo lined elevatd subtuberculatd, thorace immaculato 

 punctulatissimo, elytris striatis, interstitiis punctulatis. (Long. corp. 2 lin.) 

 Sc. tristis. Zenker. — Ap. tristis. Steph. Catal. 112. No. 1164. 



Black, shining: clypeus punctulated, the vertex with an obsolete carina, and an 

 indistinct tubercle on each side: thorax convex, black, immaculate : elytra 

 deeply punctate-striated, with the interstices somewhat punctured ; the suture, 

 a spot on the shoulders, and the apex more or less rufo-ferruginous : legs 

 pitchy-black, with the tibiae and tarsi rufo-piceous ; posterior tibiae com- 

 pressed, bent, and considerably dilated beneath. 



From the three foregoing species, this may be known by its punctulated elytra, 

 black thorax, and curved, dilated, posterior tibia;. 



Found within the metropolitan district, and in Somersetshire. 

 " Swansea, I believe, is not uncommon." — L. W. Dillwyn, Esq. 



Sp. 52. quadrimaculatus. Convexus, niger, nitidus, thorace immaculato, elytris 

 puncto humerali maculdque posticu ruhris. (Long. corp. 1^ — if lin.) 



Sc. quadrimaculatus. LinnL — Don. ii. pi. 70. f. 3. — Ap. 4-maculatus. Steph. 

 Catal. 112. A T o. 1165. 



Short, convex, shining black : clypeus angulated, anteriorly depressed, punc- 

 tulated: thorax thickly punctured, immaculate: elytra punctate-striate, with 

 the interstices finely punctured ; a small red spot on the shoulders, and to- 

 wards the apex a large orbiculate one : body and legs black ; tarsi rufescent. 



The humeral spot on the elytra is sometimes produced into an abbreviated 

 streak. 



tSp. 51. quadriguttatus. Ohlongus, niger, thoracis lateribus, elytrorum maculis 



quatuor, pedibusque rufis. (Long. corp. h\ lin.) 

 Ap. quadriguttatus. Illiger. K. i. 35. — Fabricius, S. E. i. 78. (/) 



Black; thorax smooth/shining; the lateral margin obscure rufous : elytra ob- 

 soletely striated ; the interstices smooth, each elytron with two rufous- spots, 

 the anterior angulated, the posterior rounded : legs also rufous. 



Fabricius gives this species as a native of England, but I have never seen an 

 indigenous specimen. 



