1885.] ^ 223 



The single specimen of this large and well-marked species, which 

 is contained in mj collection will, I think, have to be placed in 

 Suffrian's first Group of African CryptocephaU, near C. tridentatus, 

 King., from which it differs sufficiently in its larger size, different 

 coloration, and closely and finely punctured thorax, 



^SERNOiDES, nov. gcn., Ghrysomelincd. 

 Sub-quadrate-ovate, convex ; third joint of maxillary palpi Bcarcely shorter than 

 the fourth, the latter transversely shaped ; its apex obliquely truncate. Antennte 

 slender and elongate, the apical joints flattened, the second joint half the length of 

 the third, the fourth shorter than the preceding one. Thorax transverse, about 

 three times as broad as long, its angles acute and produced, surface flattened, the 

 sides thickened and limited interiorly by a deep longitudinal and sinuate fovea. 

 Scutellum triangular. Elytra convex anteriorly, from there to the apex quickly 

 depressed, surface regularly punctate-striate. Prosternum elongate, its surface 

 broadly flattened, not produced in front, its basal margin deeply emarginate. 

 Mesosternum very narrowly transverse, convex. Metasternum longitudinally 

 grooved. Legs long and slender, the tibiae not channelled. Posterior first tarsal 

 joint as long as the two following united. Claws bifid, the inner division long and 

 pointed. » 



This rather remarkable genus seems somewhat allied to u^sernia 

 in the shape of the thorax and its lateral grooves or fovea?, as well as 

 in the emargination of the base of the prosternum. It differs, how- 

 ever, in its totally different general shape, and the deeply bifid claws. 

 The coloration of the only species known to me is also rather 

 different from most other Australian forms with which I am acquainted, 

 from which the shape of the thorax and the thickened sides, as well as 

 the slender and elongate legs, will distinguish it. 



^sernoides nigrofasciatus, sp. nov. 

 Below piceous ; antennae black, basal joints testaceous below ; 

 head black ; thorax piceous, closely punctured ; elytra bright flavous, 

 a spot at the shoulder, a transverse, medially widened band before 

 the middle, extending up the suture, a deeply dentate transverse 

 fascia below the middle, and a spot at the apex, black. 



Length, 5 lines. 



Head very closely and finely punctured, obsoletely longitudinally depressed 

 between the eyes ; antennae extending to one-third the length of the elytra, slender, 

 the first three joints testaceous below, the rest black, rather flattened and somewhat 

 widened ; thorax more than twice as broad as long, the sides nearly straight, a little 

 constricted at the middle, all the angles acute and produced, the posterior ones 

 thickened ; surface closely covered with small and larger punctures, the sides much 

 and broadly thickened, preceded anteriorly by a deep fovea and posteriorly by a 

 longitudinal depression ; scutellum impunctate ; elytra wider at the base than the 



