64 PROCEEDINGS OF THE NATIONAL MUSEUM vol. i04 



darkened apex to posterior femora, otherwise tibiae and tarsi dark, 

 body beneath pale. 



Head with interocular space less than half the width of head, eyes 

 no more emarginate than in other species, occiput smooth, a cluster 

 of coarse punctures on each side near eye, frontal tubercles indis- 

 tinctly marked, carina narrow and a little produced, area below anten- 

 na! sockets excavated, pale with a dark occipital spot and dark 

 mandibles. Antennae long and slender, dark with the basal joints 

 paler. Prothorax more than twice as broad as long, with wide anterior 

 angles and straight sides, a slight hump on each side and a short basal 

 depression over scutellum, faintly alutaceous and very finely punctate, 

 pale with indistinct brownish spots. Elytra more convex than pro- 

 thorax, broad and long, with wide dark sutm-al and median vittae 

 and a narrow submarginal vitta not reaching the apex, surface shining, 

 impunctate. Epipleura partly dark. Body beneath pale, the femora 

 of anterior legs with a dark streak, the apex of posterior dark. Length 

 7.9 mm., width 4 mm. 



Type: Female, MCZ 29047 (F. A. Eddy collection), bearing label 

 "Amazon— Mar. 2, 1891." 



Remarks: Only one specimen, and that a female, is known. Another 

 of the nigrofasciata gi'oup, it appears to be confined to the Amazon 

 River basin, and is distinctive in its large size, broad elytra, and short 

 prothorax. The markings are somewhat similar to D. juruensis but 

 darker. 



Disonycha conjuncta (G^rmar) 



Figure 52 



Haltica conjuncta Germar, Insectorum species novae aut minus cognitae, p. 610 



1824. 

 Disonycha conjuncta Dejean, Catalogue de la collection de Col6opteres . . . , ed. 



3, p. 414, 1837. 

 Disonycha tristis Jacoby, Proc. Zool. Soc. London, p. 440, 1879. 



Between 6.5 and 7.5 mm. in length, broadly oblong oval, alutaceous, 

 faintly shining; head entirely dark and coarsely punctate, prothorax 

 with 5 dark spots, often confluent and forming an irregular fascia 

 across pronotum; elytra with broad dark sutural vitta uniting with a 

 narrow marginal one at apex, a broad median vitta; body beneath 

 and legs dark except the border of the prosternum and a narrow area 

 between front coxae, the abdomen of the male with a deep rounded 

 depression near the apex. 



Head entirely dark and coarsely punctate, a shallow depression 

 above tubercles, tubercles only smooth and well marked, space between 

 antennal sockets narrowly carinate and extending to above labrum. 

 Antennae moderately long and stout, dark except for the pale edging 



