Dec, 1919.] Shaeffer: Notes on Chr/somelid.e. 339 



Disonycha texana new species. 



Above flavous ; head behind the eyes, labrum more or less, antennae, ex- 

 cept the first joint below, scutellum and a sutural and discal vitta black; the 

 discal vitta about as wide as the pale space on each side ; body below pale but 

 metasternum, tibiae more or less and tarsi black. 



Head smooth and shining, near each eye a foveiform puncture, frontal 

 tubercles scarcely distinct ; antennae short and stout, reaching to about middle 

 of elytra; second joint small, third longer but shorter than first, fourth a little 

 longer than third, from the fifth feebly decreasing in length. Prothorax about 

 twice as wide as long ; sides feebly rounded and gradually narrowing to base ; 

 basal angles obtuse ; apical angles slightly thickened and feebly rounded ; sur- 

 face smooth, shining; elytra slightly wider at base than the prothorax; sides 

 feebly arcuate; surface moderately showing, sparsely and very minutely punc- 

 tate. Ventral segments shining, sparsely punctate ; pubescence short and 

 sparse. Length 5.25 mm. 



Brownsville (type) and New Braunfels, Texas. 



This species undoubtedly stands in collections as abbreviata, but is 

 more parallel, the elytra almost smooth, the antennae shorter, and the 

 scutellum and metasternum are always black. The Mexican speci- 

 mens recorded with a little doubt as abbreviata by Mr. Jacoby in the 

 Biologia seem to be the same as the Texas specimens. 



Phyllotreta liebecki new species. 



Similar in form and color to vittata, but surface smoother and a little 

 more shining and aeneous ; elytra with a moderately broad yellow vitta ; ex- 

 tending to the extreme apex incurved at scutellum, dilated below humerus and 

 strongly so near apex, the apical part curved inwards, and extending to the 

 suture. Head alutaceous, distinctly punctate. Prothorax about twice wider 

 than long, sides arcuate, slightly narrowed in front, surface alutaceous, punc- 

 tures moderately coarse and close. Elytra slightly wider at base than the pro- 

 thorax, humeri obliquely rounded ; moderately coarsely punctate, punctures 

 much finer towards apex. Body beneath piceous, abdomen and posterior 

 femora with a feeble metallic tint; abdominal segments rather sparsely punc- 

 tate. Length 1.75 mm. 



Male. — Last ventral rather feebly lobed with a moderate transverse im- 

 pression at tip; antennal joints two and three subequal, fourth distinctly 

 shorter than the preceding joint, fifth a little stouter than in vittata, sixth 

 short, oval, seventh to tenth subequal and less elongate than in vittata, eleventh 

 slightly longer than the preceding joint. 



Female. — Third and fourth antennal joints nearly equal, fifth longer than 

 either the fourth or sixth, the latter elongate but shorter and less stout than 

 the seventh, seven to ten equal, eleventh a little longer than the tenth. 



Enterprise, Florida. 



