192 ALL0CHR0MA. 



Oval, rufo-flavous. Head short, depressed, not anteriorly produced : 

 eyes tolerably large, distant, not extending laterally as far as the 

 posterior angles of the thorax ; parallel to the inner margin of each is 

 a semicircular depression, while between these depressions a T-shaped 

 fovea is apparent : the surface is impunctate. Thorax transverse, 

 rectangular ; the anterior angles are prominent and siibacute ; the 

 sides marginate and depressed ; the basal angles also subacute ; the 

 surface is equate, finely punctured, glabrous ; at the base are two 

 circidar black spots ; the margination is rufo -fuscous, and the sides 

 suffused with rufous. Scutellum triangular. Elytra broad, deeply 

 punctate-striate ; on either side of the suture (occupying the space 

 between the second and the sixth striae) are two large circidar spots 

 of a dark fuscous or black colour ; the margination of the elytra is 

 rufo-fuscous. Antennce short, robust, subincrassated ; the first joint 

 being long, and dilated at the apex ; the second short, ovate ; the third 

 shorter than the first, and contracted ; the fourth and fifth shorter than 

 the third ; the remaining joints gradually but slightly incrassated ; 

 the first to the fifth flavous, the sixth to the ninth dark fuscous, the 

 tenth and the eleventh testaceous. Legs flavous throughout. 



Guatemala. A single specimen, in the cabinet of the British 

 Museum. 



This species, closely resembling A. festivum, is separated from it 

 not only by its larger size and the different ai'rangement of its 

 maculations, but in the character of the surface of its thorax, which 

 is much more finely and less closely punctured. 



13. Allochroma festivum. 



A. ovale, sat robustum, ferrugineum, nitidum ; capite brevi, haud 

 prodiicto, inter ocxdos transverse foveolato ; thorace transverso, 

 angulis anterioribus depressis, marginato, punctato, maculis dim- 

 bus postmediis nigms ornato ; elytris fortlter pimciato-striatis, 

 maculis quatuor nigris inter strias 2 am et 6' am ; antennis robustis, 

 ad apicem subincrassatis, fuscis, art. &°-9 n ° nigris ; pedibus 

 fuscis. 



Long. corp. 2± bin., lat. 1^ lin. 



Oval, ferrugineous, shining ; of the form of the preceding species. 

 Head very short and depressed : from the base of the antennae a 

 short longitudinal furrow extends medially upwards, and meets a 

 transverse fovea between and somewhat above the eyes, the two 

 together forming the letter T ; this T-shaped canaliculation is 

 bounded on either side by a depression, which is close to, and follows 

 the course of, the inner margin of the eyes : the surface is finely 



