Longicornia Malayana. 199 



depressed above. The characters, although not very decisive, are 

 tolerably constant for so large a group. The type, Sybra stig- 

 tfiotica, is nearly allied to a Madagascar species — the Saperda 

 gem'mata of King. I have divided the genus into three 

 sections, the first having the apex of each elytron broadly 

 wedge-shaped, and the sutural side of the wedge with a convex 

 outline ; the second section has a narrower and more projecting 

 wedge, and the sutural side more or less concave ; the third sec- 

 tion has each elytron rounded at the apex. Sybra incivilis, Pasc, 

 from Port Denison and S. posticalis, Fasc, from Hong-Kong, be- 

 long to the first, and S. acuta* from New South Wales, to the second. 

 The first, and by far the largest, section is divided into sub- 

 sections dependent on the comparative breadth of the prothorax 

 at the base. The species are all of small size, with a derm vary- 

 ing from testaceous to dark brown or nearly black, and covered 

 with a generally scanty greyish pubescence, almost invariably 

 relieved by spots or patches of white, grey or brown, but often so 

 indistinctly as to require a strong lens to distinguish them. Un- 

 fortunately there is reason to believe that the species vary con- 

 siderably among themselves, and particularly that a minute 

 description of the coloration would only be applicable to certain 

 individuals ; at the same time the distinctions to be drawn from form 

 and sculpture are not always sufficiently decided to allow of their 

 being clearly stated. With a large number of examples, I can 

 conceive that it might be impossible to divide them satisfactorily 

 at all. In fact I have put aside several that I can neither resolve 

 into species or quasi-species, nor refer to any here described. In 

 two or three instances in which Mr. Wallace has marked the sexes 

 of the same species, the differences between them consist chiefly in 

 the broader prothorax and somewhat longer antennae of the males. 



§ 1. Elytra apicibus late cuneatis. 

 * Prothorax suboblongus, lateribus rotundatis, basi incarvatis. 



Sybra sl'igmat'ica. (PI. IX. fig. 2.) 

 Ropica stigmatica, Pascoe, Trans. Ent, Soc. ser. 2, v. 51. 

 S. fusca, griseato-pubescens ; prothorace modice et vage punc- 

 tato ; elytris angulatis, postice dilatatioribus, post medium 

 maculis duabus oblongis albis. 

 I£ab. — Aru. 



* Sybra acuta=^ Ropica genmiata, Pasc. I have been obliged to alter the 

 latter name, in consequence of Klug's Saperda geminata (above alluded to) 

 coining into the same genus. 



