1904.] AMERIOAX PHYTOPHAGOUS COLEOPTEKA. 399 



Lactica discicollis, sp. n. 



Flavous, the head and the disc of the thorax piceous, the latter 

 impunctate ; elytra flavous, extremely minutely punctured. 



Length 3 millim. 



Head impunctate, nearly black ; eyes very large, the diameter of 

 each exceeding the intermediate space, frontal elevations obsolete ; 

 antennae flavous, the second to the fifth joints gradually elongate ; 

 thorax one half broader than long, the sides straight, the anterior 

 angles oblique, the basal sulcus and the perpendicular grooves very 

 deep, the surface impunctate, piceous, all the margins narrowly 

 flavous ; scutellum piceous ; elytra narrow and parallel, fulvous, 

 scarcely perceptibly depressed below the base, very finely punc- 

 tured and somewhat regularly arranged in rows, more irregularly 

 and finely so near the apes ; underside pale flavous, legs flavous. 



Hah. Peru. 



A small species, principally distinguished by the colour of the 

 thorax. There are six specimens before me. 



Lactica rufobrunnea, sp. n. 



Elongate and parallel, reddish- fulvous ; the antennse, the apex 

 of the posterior femora, and the tibiae and tarsi black ; thorax 

 impunctate, deeply sulcate ; elytra extremely minutely punctured. 



Length 5^ millim. 



Head with some deep punctures at the vertex, the frontal 

 tubercles entirely obsolete, carina linear, short ; antennae ex- 

 tending to the middle of the elytra, black, the third and fourth 

 joints equal, terminal joints slightly shorter ; thorax scarcely one- 

 half broader than long, distinctly narrowed anteriorly, the sides 

 straight, the anterior angles oblique, the surface impunctate, with a 

 broad transverse sulcus and deep perpendicular grooves ; scutellum 

 rather small ; elytra elongate, without basal depression, extremely 

 minutely and closely punctured ; legs black ; the base of the 

 posterior femora and the underside fulvous. 



Hah. Marcapata, Peru. 



Allied to L. clypeata Baly ; but smaller and shorter, of dark 

 reddish colour, not testaceous, the head not punctured in front, 

 the encarpae obsolete, the antennae entirely black, the thorax much 

 less transverse with the sides straight, the anterior angles not 

 dentiform. 



Lactica baeri, sp. n. 



Rufous ; antennae (the basal joint excepted) and the tibiae and 

 tarsi black, head and thorax impunctate ; elytra very finely and 

 rather closely punctured, metallic blue. 



Length 5 millim. 



Head impunctate, rufous, the frontal elevations small and 

 transverse, carina elongate and narrow ; eyes widely separated, 

 moderately large ; antennae extending beyond the middle of the 

 elytra, black, the basal joint and the base of the following two 

 joints fulvous, the third joint distinctly shorter than the fourth. 



