1879.] PHYTOPHAGOUS COLEOPTERA. 783 



of which is very short, their interstices also extremely minutely 

 punctate, dark violaceous blue, with a bright yellow band of crescent- 

 shape which, commencing at the base and running parallel with the 

 lateral margin (without, however, quite touching it), turns inwards 

 at a little distance from the apex, towards the suture, which, in the 

 one specimen before me, it does not quite reach. Underside and 

 legs rather darker blue than the upperside. 



Halticinj;. 

 20. Crimissa nigro-ornata, sp. nov. 



Broadly oblong-ovate. Black, base of antennae and the femora 

 fulvous ; above testaceous. Thorax with three transversely placed 

 black spots. Elytra irregularly punctured, each elytron with a black 

 longitudinal spot on the shoulder. 

 Length 5|-6 lines. 

 Hab. Columbia. 



Head swollen, impunctate, with an elongate triangular black spot 

 at the vertex; the space immediately above the insertion of the 

 antennas but slightly raised and divided by a broad triangular groove, 

 black ; apex of jaws and palpi black ; antennae shorter than half 

 the length of the body, with the basal joint slender, curved, and the 

 longest, the fifth joint slightly longer than the rest, first joint 

 entirely testaceous, the second to the fifth spotted with piceous on 

 each side, the remaining joints black with only the extreme base 

 testaceous. Thorax transverse, about three times as broad as long, 

 the anterior and posterior margins produced in the middle, sides 

 nearly straight and widened towards the base ; all the angles acute, 

 the anterior ones much produced and pointed ; surface slightly con- 

 vex, smooth, shining, and impunctate, with a round spot at each 

 side and a short longitudinal streak in the middle near the base 

 black. Scutellum pentagonal, obsoletely edged with piceous. Elytra 

 convex, scarcely broader at the base than the thorax, distinctly and 

 rather closely punctured, of the same colour as the thorax, or a 

 little lighter testaceous, with a longitudinal black spot on the humeral 

 callus. Underside black, the femora fulvous, the posterior ones 

 with a black spot ; the tibiae and tarsi also more or less stained with 

 black. 



In one specimen, which may prove to be the female, of rather 

 larger size, the black colour predominates beneath, the spots on the 

 thorax are much enlarged, especially the middle one, and the elytral 

 spots extend in the shape of longitudinal pointed vittae from the 

 shoulder to nearly the apex. 



21. HOMAMMATUS CLARKI, Sp. nOV. 



Oval, convex, robust. Dark chestnut-coloured, subpubescent. 

 Antennae dilated towards the apex, fulvous, the sixth to the ninth 

 joint black ; elytra with a small black spot before the middle. 



Length 2| lines. 



