BY EDWARD NEWMAN. 4^.3 



Poec. raetallicum. Nigro-viride, fulgore metallico tarium; 

 elytra rugosa, suhcarinata : pedes chalyhel. (Corp. long. 'Q5 

 unc. ; lat. '275 unc.) 



The same colouring pervades the entire insect — a dark green, tinted 

 with a great variety of metallic and iridescent hues : it is about 

 the size, and has something of the figure and colour of Melandrya 

 carahoides : the antennas are rather more than half the length of 

 the body, and somewhat more slender than in P.Jlammiger, but 

 the proportions of the joints are the same : the head, prothorax, 

 and elytra, are rugose, and thickly punctured ; the elytra have also 

 six or seven rather ill-defined, raised, longitudinal lines on each ; 

 the space between the suture and the first of these lines is 

 greater than between either two of them. 



Inhabits Van Dieman's Land. Presented by Mr. Shuckard. 



Genus. — Trachyderes, Dalman. 



Trac. superbus. Antennw coccina:^ nigro-annulatce : caput ni- 

 grum, macula frontali coccind : prothorax niger, onargine 

 postico coccino : elytra Icete viridi-csnea : femora basi coccina^ 

 apice nigra : tibice basi apiceque nigrce, medio coccince : tarsi 

 nigri. (Corp. long. I'l unc; lat. "4 unc.) , 

 Antennae with the two basal joints black, the remainder of a bright 

 coral red, each having a black ring at the tip : the head black, with 

 ared frontal spot: prothorax black, with the posterior margin bright 

 coral red : the elytra are somewhat rugose and bright golden 

 green, inclining to coppery : the legs are black, with the basal 

 portion of the femora and the median portion of the tibiae bright 

 red. 



This superb insect inhabits Mexico, and was presented by 

 Mr. Walker. It does not closely agree with the genus Trachy- 

 deres of Dalman, yet too nearly so to admit of subdivision. 



Genus. — Cerambyx, Linnceus et Autt. hodier. 



Cera. Brama. Maximus, brunneus, sericus : caput porrectum ; 

 fades profunde depressa ; prothorax rugose rugatus, antice et 



postice transverse bisulcatus, mdlo modo armatus. (Corp. long. 



3 unc. ; prothoracis lat. '5 unc. ; elyt. lat. "8 unc. ; anten- 



narum maris valde elongatis.) 

 Brown and entirely clothed with a silken pubescence, which in some 



situations, more particularly on the tibiae and tarsi, displays a 



