ALLOCHROMA. 187 



Oval, black, shining. Head short, depressed, scarcely elongated 

 in front, dark rufous ; labrum fulvous ; eyes distant and slightly 

 prominent : between the eyes, and above the insertion of the antenna', 

 is a longitudinal fovea which extends nearly to the base of the head 

 (narrowed between the eyes, but broader as it approaches the basal 

 margin) ; a transverse and less distinctly defined fovea (increasing in 

 breadth near the eyes) crosses this at right angles : the surface of 

 the head is sparingly punctate, and of a rich castaneous colour. 

 Thorax transverse, with the anterior and posterior angles acute ; 

 sides marginate, subsinuate ; near the base is a broad and shallow 

 transverse depression ; the surface is distinctly but sparingly punctate, 

 piccous, shining. Elytra with deep and distinct punctures arranged 

 in the form of striae ; a broad and indistinct antemedial depression 

 (which is inflected upwards on either side towards the shoulders) 

 gives an appearance of fullness or prominence to the anterior angles ; 

 the colour is dark piccous, fading away at the shoulders, along the 

 margins, and especially towards the apex, into a castaneous brown. 

 Antennae filiform, robust, piceous ; the apex of the first and second 

 joints, and the tenth and eleventh fuscous. Legs robust, piceous 

 throughout. 



Brazil. 



6. Allochroma Balii. 



A. ovale, subdepressum, nigrum, nitidum ; capite et thorace rajts ; 

 capite brevi, transverso, antice elongatulo, inter oculos transverse 

 foreolato ; thorace transverso, ad latera marginato ; scutello rufo; 

 elytris latis, fascia albo-jiava antemedia, ad suturam bipartita, 

 maculisque dvubus ad apicem, circularibus, marginem (haud 

 suturam) attingentibus, punctis obsoletis veluti in striis ordinatis ; 

 antennis fuscis ; pedibus fuscis, femoribus posticis jiavis. 



Long. corp. 2f lin., lat. 1^ lin. 



Oval, broad, subdepresscd, black, glabrous. Head slightly de- 

 pressed, produced somewhat in front ; eyes prominent, lateral ; between 

 the eyes is a transverse and also a longitudinal fovea, forming together 

 the character of the letter T ; the surface is impunctate, except near 

 the basal line, where scattered punctures are apparent ; the colour is 

 rufo- castaneous. Thorax transverse ; the anterior margin slightly 

 emarginate ; the sides broadly marginate, and (when viewed laterally) 

 depressed ; the surface is impunctate and rufo-castaneous. Seidell urn 

 triangular, rufous. Elytra broad, black, shining, with faint and 

 sparingly distributed punctures arranged as striae ; a broad antemedial 

 transverse fascia, of a straw colour, is interrupted at the suture ; near 

 the apex are two large circular spots of the same colour. Antenna 

 short, robust, slightly incrassated towards the apex, fuscous. Legs 



