90 CBBAMBTCIDJE. 



side of the middle line. Elytra shaped as in P. pyrocliroides 

 but the dorsal costae much feebler, two only on each elytron 

 are at all distinct. Femora, especially of the two front pairs, 

 more obviously thickened below the middle than they are in 

 P. pyroclt-roides. Episterna of metathorax glabrous, polished and 

 impunctate on most of the upper half , distinctly and densely punc- 

 tate on lower half ; metasternum subglabrous, nitid, rather thickly 

 punctured near the lateral edges, sparingly over the other parts ; 

 abdomen nitid, very sparingly punctulate and pubescent. 



Length 13|-15 ; 'breadth 3-3| mm. 



Hab. Burma : Ruby Mines (Doherty}. 



Subfamily IV. CERAMBYCIN^E. 



Cerambycides, Lacord. (in part.) Gen. Co-opt, viii, p. 192 (1869). 

 Cerambycidse, Sates (in part.), Biol. Centr.- Americana, Col. v, p. 13 



(1879). 

 Cerambycini, Ganglb. (Bestim.-Tabell. Europ, Col. vii) Verh. z.-b. 



Gcs. Wien, xxxi, p. 687 (1881). 



Head variable in form, but seldom distinctly narrowed behind 

 the eyes ; mandibles without membranous fringe on inner side ; 

 maxillae bilobed : mentigerous process of gula often wanting, 

 generally very short when present ; ligula usually membranous, 

 sometimes corneous. Antennae inserted as a rule very close to 

 the eyes at some distance from base of mandibles, exceptionally, 

 close to the latter. Prothorax not marginate at sides. Mesonotum 

 generally provided with stridulatory area, which rarely is divided 

 by a median line. Middle tibiae never notched on outer border. 

 Wing-venation reduced, usually by absence of vein Cu. 2. 



As already pointed out, the structural differences in the imago 

 between the beetles of this subfamily and the Lepturince are not 

 always well-marked, and in cases where the larvae are unknown 

 there will be a difficulty at times in determining to which subfamily 

 a species belongs. The wing-venation is, as a general rule, much 

 more reduced than in the Lepturince : the second cubital vein is in 

 the majority of forms absent; when present, it has usually lost all 

 connexion with the first anal vein, appearing then either as an 

 isolated vein or as a branch of the second cubital ; the first anal 

 vein, except in one or two genera, has no cell in its course. This 

 subfamily is by far the largest in the present family, and is well 

 represented in most parts of the world. It offers a considerable 

 amount of variety in the structure, form and coloration of the 

 numerous species. In many of the groups the eyes are finely 

 facetted, and where such is the case the habits of the insects are 

 probably diurnal. In these groups the colours are generally 

 brighter and the markings more varied than they are in those 

 with coarsely facetted eyes. Several genera of this subfamily are 

 characterized by the presence of small pits or pores placed close 

 to the suture between the metasternum and its episterna, not 

 far from its posterior apex. These pores, judging from what is 



