Genera and Species of Coleoptera. 3GI 



would be with Chjtus. The genus must be worked out in its entirety, 

 if it is to be divided satisfactorily. Among the Chjti, however, 

 there seems to me to be two groups which, by their habit principally, 

 deserve to be distinguished — one Rhapliwna, Thorns., including G. 

 quadricolor, Lap., C. leucosciitellatus, Hope, and G. placidus, Pasc., 

 the other, unnamed, comprising G. hmatus, Newm., G. Hardwiclcii, 

 White, and C. cnientatus, Pasc. Both these groups appear to be 

 well limited and well marked ; but their technical characters, I fear, 

 will not be very valuable. 



ZoEDiA [Cerambycidae]. 



Head siibquadrate in front, constricted into a neck behind. Eyes narrow, 

 elongate, deeply emarginated. Antennae eleven-join ted, filiform, as 

 long as the body ; all tlie joints, except the second, nearly equal in 

 length, the basal thickened, obconic. Palpi with the last joint uaiTowly 

 triangular, obliquely tnmcate. Prothorax nearly as broad as long, 

 narrow anteriorly, a stout tubercle at the side. Elytra broader than 

 the prothorax, subparaUel, roimded at the apex. Legs slender; tarsi 

 nearly linear, the basal joint elongate. Pro- and mesostema simple. 



Near Tillomorplia and Euderces, but differing completely in the 

 form of the head, the prothorax, &e. With Attodera* it agrees in 

 having the prothorax of a similar character, although more robust, and 

 in its neck ; ' but the peculiar round, ant-like head of the latter, and 

 its perfectly entire eyes, place it in a different subfamily. Of the two 

 species described below, I have only seen one individual of each. 



Zoedia triangularis. (PI. XYII. f. 3.) 



A. niger, sericeo-pubescens ; capite, prothorace elytrisque macula magna 

 triangular! rufis ; antennis rufis, articulo basali infuscato. 



Hab. Australia (Melbom-ne). 



Head canalicidate in front, finely pimctm'ed, and with the prothorax 

 brownish red, inclining to fen'uginous ; eyes narrow, oblique, slightly 

 emarginate, pale red ; antennae rather shoi-ter than the body, red, the 

 basal joint clouded with brown; palpi and mandibles red; prothorax 

 longer than broad, swelling out considerably at the side behind the 

 middle, where it is as wide as the head, very narrow and produced 

 anteriorly ; scutellimi triangidar, didl brown ; elytra wider than the 

 prothorax, especially at the base, the sides parallel, abruptly deflexed 

 and roimded posteriorly, brownish black, with silky and somewhat 

 silvery pubescence, a large tiiangidar reddish patch, the apex com- 



* Pseudoeephala, Newm. Tliis name being preoccupied, as well as a more 

 recent one, Orthocephalus, Mr. Thomson informs me {in lift.) that he intends to 

 propose Attodera in his forthcoming work on the Longicorns. 



