58 ON NEW SOUTH-AMERICAN COLEOPTERA. [May 12, 



joints fulvous ; thorax with the sides straight, obliquely narrowed 

 anteriorly, greenish, the sides strongly and closely, the disc 

 minutely punctured; scutellum ovate, black; elytra with deep 

 and regular strife which are closely and finely punctured, those 

 near the suture impunctate, the basal margin and three longi- 

 tudinal bands, as well as a short subsutural stripe, fulvous, the 

 two inner stripes joined at the apex and connected at the same 

 place with the lateral stripe, which has a row of black punctures. 



Hah. Salta, Argentine Repubhc. 



Readily distinguishable from any other species by the anteriorly 

 narrowed thorax, the convex elytral interstices, and the punc- 

 tured strict (not punctured rows), also by the additional short 

 subsutural flavous stripe at the first interstice near the base. 



Zygogramma c^ruleo-vittata, sp. nov. 



Dark fulvous, the breast and abdomen greenish piceous, apical 

 joints of the antennte black; thorax strongly punctured at the 

 sides only ; elytra with three dark blue and three flavous longi- 

 tudinal bands each, the dark bands closely punctured, the flavous 

 ones joined at the apex. 



Length 7 millim. 



Head finely and sparingly punctured, dark fulvous, labrum 

 flavous, mandibles i-obust, strongly punctured and pubescent; 

 antennas black, the basal six joints fulvous, terminal joints 

 strongly dilated, the last one oblong- ovate ; thorax more than 

 twice as broad as long, the sides straight, closely and strongly 

 punctured, the disc very finely punctate ; scutellum fulvous ; 

 elytra with two regular rows of punctures near the suture, the 

 latter and two longitudinal stripes dark blue, the discoidal stripe 

 abbreviated posteriorly, the alternate interstices flavous, im- 

 punctate, joined at the apex, the basal margin also flavous, the 

 marginal flavous band with a single row of punctures, the elytral 

 epipleurte seneous, except near the apex ; legs fulvous, claws 

 united at the base. 



Hah. Paraguay. 



The colour of the antennae and the blue elytral bands principally 

 distinguish this species, which has its most neai'ly allied form 

 probably in Z. 5-virgata Stal, fi'om which it difiers in the details 

 given above. 



Leptinotarsa paraguayensis, sp. nov. 



Metallic green, the labrum and antennae fulvous ; head and 

 thorax impunctate, subopaque ; elytra regularly punctate- striate, 

 the interstices slightly convex and finely aciculate. 



Length 9 millim. 



Head entirely impunctate, of silky appearance, the labrum 

 fulvous; the antennae with the terminal five joints widened, 

 entirely fulvous ; thorax with strongly rounded sides, rather 

 convex, the angles not produced, the surface sculptured like the 

 head, without a trace of punctation; scutellum shining; elytra 



