18fi M. IACOBY 



tirely greenish-aeneous colour above, but does not differ other- 

 wise and even here, traces of the fulvous portion of the elytra 

 can be seen in certain lights. 



10. Lactica geniculata, sp. n. — Below and the legs flavous, 

 above fulvous, the antennae (the basal joint excepted), the knees 

 and the apex of the tibiae as well as the tarsi black , thorax 

 and elytra impunctate. 



Length o mill. 



Head impunctate, the eyes widely separated, rather small, 

 frontal tubercles obsolete, labrum piceous, antennae scarcely 

 extending to the middle of the elytra, black, the basal joint 

 flavous; the third joint twice as long as the second, as long as 

 the fourth and following joints; thorax twice as broad as long, 

 the sides rather strongly rounded, narrowed towards the apex, 

 the posterior angles slightly produced, the disc rather convex, 

 impunctate, the basal sulcus straight and deep, bounded at the 

 sides by a perpendicular fovea ; elytra ovately rounded, convex, 

 not perceptibly punctured ; knees , the base and apex of the 

 tibiae and the tarsi deep black. 



There are a good many similarly coloured species of Lactica 

 inhabiting South America with neither of which the present 

 species can be confounded on account of the flavous legs which 

 have only the extreme apex black ; L. bogotana, Har. is much 

 larger and has black tibiae ; L. xcmtochroa, Har. and L. tibialis, 

 Oliv. differ in the same and other details, the same is the case 

 with L. citrina, Har. which has also distinctly punctured elytra; 

 two exactly similar specimens were obtained by Sig. Boggiani. 



11. Lactica varicornis, Jac. — Two specimens of this species, 

 described by myself in the Biologia Centrali Americana, were 

 obtained by Sig. Boggiani ; they differ from the typical form in 

 being of rather larger size and in having the last four joints 

 of the antennae black instead of five, also in the black apex of 

 all the femora ; the species was doubtfully placed by me in Lactica 

 from which it is probably generically distinct, as the antennae 

 are robust with short, subtriangular joints and the thorax is 

 of subquadrate shape and more elongate than is generally the 



