HOMALISPA. 37 



di\"ided from the face by a broad, slightly elevated, transverse 

 ridge, at the hinder mai'gin of which is a deep groove, which runs 

 behind the eyes. Thorax more than half as broad again as long ; 

 apical margin convex, deeply sinuate on cither side ; lateral margin 

 with a reflexed rounded boi-dcr, narrowed towards the apex and 

 at the extreme base, anterior angles subacute, posterior acute ; 

 above smooth and shining, minutely and subremotely punctate. 

 Scutellum smooth, black, sometimes with an obscure fulvous spot. 

 Elytra broader than the base of the thorax, ovate ; sides shghtly, 

 apex regularly rounded ; sutural angle obtuse ; outer margin 

 dilated, complanate along the sides, its outer edge shghtly re- 

 flexed, finely serrate, serratures more distinct and crowded towards 

 the apex ; above subdepressed, convex on the sides, sinuate below 

 the shoulders, finely but distinctly punctate-striate, punctiuing 

 deeper on the outer disc, the anterior two-thirds of the latter irre- 

 gularly punctate ; margin smooth, impunctate. Beneath fiJvous ; 

 pleiu-a3 and legs (base of all the thighs and inner siu'face of ante- 

 rior pair of tibiae excej)ted) black. 



Hah. Amazons ; Santarem ; Peru. 



British Museum, and coEection of J. S. Baly. 



A specimen of this insect in my collection, from Peni, differs in 

 being rather narrower, as well as in the coloiuing of its under siuface; 

 the legs are nigro- fuscous, the base of the foiu' anteiior femora alone 

 excepted ; the pleiu'ai and sides of abdomen are pitchy, with the 

 centre of the latter obscure fulvous. 



7. Hoinalispa vespertina, n. sp. Tab. V. Fig, 3. 



H. oblongo-ovata, depressa, nigra, nitida ; thorace flavo-fulvo ; ely- 



tiis punctato-striatis, Isete metallico-cajruleis. 

 Long. 3 Hn. 



H. oblong-ovate, depressed, shining black ; thorax bright fulvous 

 yellow ; elytra deep metallic blue. Head and antennae entii'ely 

 black, the former smooth, impimctate. Thorax one-half broader 

 than long at the base ; apical margin convex, deei^ly sinuate on 

 either side ; sides narrowed from the base to their apex, regularly 

 rounded ; lateral margin, together \\it\x the basal on either side 

 the medial lobe, broadly reflexed, posterior angle acute, anterior 

 subacute ; above smooth and shining, broadly but feebly excavated 

 on each side the medial line, depressed portion very finely pimc- 

 tured and obsoletely impressed, rest of the surface impimctate ; 

 bright fulvous yellow, the anterior border alone narrowly edged 

 with black. Scutellum smooth, impunctate. Elytra rather broader 

 than the base of the thorax, oblong ; sides subparaUel, shghtly 

 rounded ; apex acutely roimded, sutural angle obtuse ; above sub- 

 depressed along the back, moderately convex on the sides, sinuate 

 below the shoulders ; lateral margin narrowly dilated, the outer 

 edge from before its middle to the apex finely sen-ate, serratm-es 



