1917.] 149 



clavate, the intermediate and posterior pairs sulcate beneath, the edges of the 

 groove on the latter cariniform, and forming an outwardly projecting tooth 

 where they meet towards the apex. 



Length 7-7^, breadth 2J-2| mm. 



Hah. : Amazons, Ega and Para (IT. W. Bates). 



Three males. Narrower than most of its allies, with a relatively 

 long prothoi-ax, strongly serrate antennae, bisinuate anterior tibiae, and 

 peculiarly anned posterior femora, which appear to be formed much as in 

 D. gounellei Pic, from Cerqueira Cesar, Brazil. 



12. — Disema brasiUensis. 



c?. Disema brasiUensis Pic, Melanges exot.-entom. iv, p. 10 

 (Sept. 1912). 



Hab. : Brazil, Serra de Communaty {Gounelle, type). 



An immature imperfect Disema, 6 , length about 10 mm., pre- 

 sumably from Brazil, in the Oxford Museum, seems to belong to this 

 species. It is a little smaller than D. cisteloides, 6 , infra ; the elytra 

 have a long, oblique, opaque lateral patch, and the rough setigerous 

 impressions extend to each interstice ; the intermediate femora are fur- 

 nished with a curved membranous lobe near the apex ; the anterior tibiae 

 are sinuate within ; and the antennae are not so elongate. D. longi- 

 cornis Miikl., from Petropolis, type 6 , to judge from the description, 

 must have longer antennae, a smaller opaque patch on the elytra and, 

 presumably, unarmed intermediate femora. 



13. — Disema appendiculata. 

 (Plate II, figs. 8, 8«, 6 ■) 



S . Disema appendiculata Pic, Melanges exot.-entom. iv, p. 9 

 (Sept. 1912). 



S . Antennae long, stout, strongly serrate, joint 11 nearly equalling 8-10 

 united ; eyes rather small, somewhat distant ; anterior femora subangulate near 

 the base beneath ; intermediate femora (fig. 8 a) with a curved submembranoua 

 lobe arising from the outwardly angulate carina on the lower margin at the 

 apex ; intermediate tibiae widened, twisted, deeply excavate towards the apex 

 externally ; posterior femora strongly toothed and clavate towards the apex 

 and hollowed thence towards the base; posterior tibiae excavate on their inner 

 aspect before the middle, sinuous as seen from above ; elytra with an oblique, 

 depressed, velvety, black patch at the sides just beyond the middle. 



$. Antennae shorter and more slender, subserrate, joint 11 slightly 

 longer than 9 and 10 united ; eyes smaller, less convex, and separated by the 

 width of one of them as seen from above, the head appearing more developed 

 behind them ; prothorax more transverse, very coarsely punctate ; elytra 

 without opaque lateral patch, the interstices less rugose ; legs simple. 



