1921] Bowditcli — Notes on South American Lacticas 49 



Lactica spinifer sp. iiov. 



Stout, like calcarata 111. or thoracica Jac. entirely flavous with 

 black eyes (antennge except first joint missing), hind tibia with 

 a stout spur-like process (like calcarata) placed a trifle behind 

 the middle on the inside. 



1 example Chancomayo Thamm (first Jac. coll.), length 4 mm. 



Head with a small median fovea, and a few punctures on the 

 front and vertex, thorax sparsely, finely punctulate, sides nearly 

 straight, basal sulcus only moderately deep, the lateral deeply 

 foveate; elytra smooth, polished, sparsely, finely punctulate and 

 with a slight l)asal depression. 



The til)ial spur easily distinguishes this form. 



In Ann. de Belg. 1893, Mr. Jacoby describes Lactica thoracica, 

 a Bolivian form, as having the thorax "without any basal sulcus, 

 the lateral grooves just indicated." My specimen came from Ca- 

 chabe; it is the best example of the absence of the basal sulcus. 

 Another form with the same characteristic is 



Lactica plagiata sp. nov. 



Ovate, convex, fiavou,s, palpi, antennse, legs and breast pitchy 

 black, elytra with a large common l)lue-black spot from the base to 

 below the middle, leaving a narrow strip of the margin flavous, the 

 rear edge of the sj^ot straight. 



3 examples, 2 5 15, Cachabe 1. c. (Eosenberg), length 4-5 mm. 



Head with well marked carina between the antenna', front 

 smooth, except for a few punctures, antennae reaching below the 

 middle of the elytra, second joint small, the first two joints some- 

 what testaceous below, thorax with straight sides, smooth and shin- 

 ing above, with a few minute punctures, the basal sulcus barely 

 indicated (it might be called absent), the lateral grooves slightly 

 indented; elytra smooth, convex, lightly punctulate, thickly on the 

 yellow area at the tip. In what I consider the $ the hind legs 

 are much more strongly developed than in the S and the apex of 

 the hind tibia is broadened and flattened on the inside. The 

 thoracic structure is almost identical with that of thoracica Jac. 



Sellata Baly is a well known form, widely distributed in Brazil. 

 A species much resembling it superficially I separate as 



