and Sjiecies of Coleoptera. 15 



Immedia erosa. 



I. rotundata, valde convexa, cuprea ; prothorace utrinque apicem 

 versus incurvato ; elytris seriatim ampliato-punctatis. Long. 4 

 lin. 



Hab. Bahia. 



Rounded, very convex, copper-brown, beneath darker ; head 

 with small, somewhat scattered^ punctures; antenniB ferru- 

 ginous, eighth and ninth joints rounded, the tenth nearly as 

 long as broad ; prothorax very short, the sides towards the 

 apex incurved, disk irregularly punctured, each puncture with 

 a bright green scale at the base ; scutellum black, glossy, tri- 

 angular ; elytra with rows of largely impressed close-set 

 punctures or foveso, each having a greenish or bluish tint at 

 the base ; palpi and legs glossy ferruginous, the latter dotted 

 with minute white scales. 



A much larger species than /. occulta *, and at once differ- 

 entiated by the incurvature of the sides of the prothorax ; the 

 clypeus also is better marked off from the head, and the 

 terminal joints of the antennse have a somewhat different 

 form. The genus is more allied to Sphcerotus than to Cyrto- 

 soma, but the metasternum in both is much shorter than in 

 the typical Cnodaloninse and Helopinse. 



Immedia Integra. 



I. rotundata, valde convexa, cuprea ; prothoraoe utrinque rotun- 

 dato ; elytris sparse seriatim punctatis, punetis majusculis, viridi- 

 annulatis. Long. 3| lin. 



Hah. Rio Janeiro. 



Rounded, very convex, copper-brown ; head finely punc- 

 tured ; antennge ferruginous, eighth to tenth joints obconic ; 

 prothorax very short, the sides rounded, disk finely punc- 

 tured ; scutellum black, triangular ; elytra with rows of rather 

 large distant punctures, each surrounded with a greenish ring ; 

 legs copper-brown. 



Very like the preceding, but with the sides of the prothorax 

 entire and the terminal joints of the antennge, except the last, 

 obconic and longer than broad. If the three species are held 

 to be congeneric, then the character derived from the antennse 

 will be seen to be only of specific value. 



EUPHLCEUS. 



Mentum quadratum ; palpi maxillares securiformes ; mandihulce 

 acutse ; lahrum breve. Antennce articulis 8, 9, 10 transversis. 



* ' Aunals,' Jan, 1882, p. 33. This species is represented in ' Aid,' 

 vol. ii. pi. clviii. fig. 2. 



