544 Mr. Francis P. Pascoe's Notes on 



than long, with a stout lateral tooth nearly in the middle, directly 

 above it a bifid tuber, which is thus placed at a distance from its 

 fellow, the space between them somewhat concave, except at the 

 base, where another small concavity is formed ; scutellum rounded 

 posteriorly ; elytra much broader than the prothorax at the base, 

 slightly rounded at the sides, the apex entire, from each shoulder 

 two oblique lines of tubercles, the inner of four, the outer of seven, 

 all very glossy, the intervals coarsely but sparingly punctured, 

 with a few smaller tubercles among them, at the sides the punc- 

 tures more crowded ; body beneath and legs with a sparse greyish 

 pile, more concentrated at the sides of the abdomen ; femora 

 strongly clavate. 

 Length 6 lines. 



Genus Thyada. 

 Caput immersum, pedunculis antennariis elevatis, contiguis. 

 Oculi emarginati. Antennce elongatae, approximatae, fim- 

 briatae, articulo basali cylindrico, tertio et quarto longissi- 

 mis, caeteris decrescentibus. Prothorax brevis, inaequalis, 

 lateribus dentatus. Elytra subcostata. Pedes validi,/emora 

 clavata. Presternum clavatum, antice bidentatum. Mesoster- 

 num antice declive. Corijus ovatum. 



1. Thyada barbicornis. (PI. XXII. fig. 4.) 

 The type of this genus is Zygocera barbicornis, Pasc, described 

 in our Transactions (n.s. vol. v. p. 34), and there doubtfully re- 

 ferred to Zygocera. The extraordinary bearding of the antennae, 

 however, gives it a very peculiar aspect, and the form of the 

 pro- and meso-sterna is different from the more typical Zygocerce. 

 There are, however, slight variations in the characters of the sterna 

 throughout the genus. 



Genus Saperda. 

 1. Saperda stigmalica. 

 S. cervino-fusca, albo-pilosa, antennis baud annulatis ; capitis 

 vittis quinque, prothoracis vittis duabus, elytrorum maculis 

 numerosis plagisque duabus, flavescentibus. 

 Port Denison. 



Closely covered with a rather coarse greyish-brown pile, and 

 with numerous erect slender white hairs ; head greyish-brown, 

 with five indistinct stripes on the vertex and behind the eyes ; 

 antennae very hairy, greyish, speckled with brown ; prothorax 



