1880.] PHYTOPHAGOUS COLEOPTERA. 171 



of the same colour and of triangular shape is placed between the 

 fifth and ninth stria, nearly extending to the middle of the disk ; 

 another patch, of a little smaller size and connected by a point with 

 the lateral margin, is situated directly behind the middle. Under- 

 side and legs black. 



One specimen in my collection. 



Genus Plagiodera, Redt. 



11. Plagiodera quadrimaculata, sp. nov. 



Oblong-ovate. Black ; thorax distinctly punctate at the sides, finely 

 on the disk ; elytra strongly and closely punctate, each elytron with 

 a narrow oblique short transverse baud before the middle and a large 

 irregularly shaped spot near the apex sanguineous. 



Length 4^ lines. 



Hab. R. Susio, Costa Rica. 



Head with a distinct longitudinal middle line, finely punctate at 

 the sides, more strongly towards the middle ; clypeus separated by 

 a triangular groove ; antennae a little longer than the base of the 

 thorax, black, the first four joints slender, the rest transverse and 

 gradually widened. Thorax very narrow, about 3^ times broader 

 than long ; anterior margin strongly concave, posterior one but 

 slightly produced at the base ; sides narrowed from base to apex ; 

 Anterior and posterior angles obtuse ; surface much more distinctly 

 punctured at the sides than at the disk. Scutellnm impunctate. 

 Elytra subparallel, rather deeply foveolate below each humeral 

 callus, the fovea joined by a short indistinct groove running upwards 

 to the base, the latter also transversely depressed ; disk closely and 

 strongly punctured except near the base, where the punctation is 

 greatly diminished ; an oblique sinuate transverse band of light red 

 colour is placed below the base and extends nearly to the suture, 

 while another rather more lighter-coloured spot of triangular shape 

 occupies the space below the middle, but without touching the suture 

 or the extremity of the elytra. Underside and legs black ; last ab- 

 dominal segments margined with testaceous. 



Collected by Mr. Rogers. 



Messrs. Godman and Salvin's collection. 



Genus Australica, Chevrol, 



12. AtrsTRALiCA viOLACEA, sp. nov. (Plate XVIII. fig. 2.) 



Oblong, convex. Greenish seneous below ; antennae and tarsi 

 fulvous ; above shining violaceous blue ; elytra deeply punctate- 

 striate. 



Length 3 lines. 



Hab. New Guinea. 



Head very deeply and closely punctate in front, more sparingly 

 and finer at the vertex, with a fine lougitudiual groove in the middle ; 

 labrum and palpi fulvous ; autennaj iucrassated near the apex, ful- 

 vous. Thorax nearly three times as broad as long; the lateral margins 



