302 PROCEEDINGS OF THE ACADEMY OP [1896. 



the clear wings, the male of hyalina is distinguished from those of 

 costalis and Wesmaeli by the unusually prominent and pointed tu- 

 bercle at base of second ventral abdominal segment. 



Elis costalis Lep. 



Chapada (March and April) ; Rio de Janeiro (November). Four- 

 teen females and numerous male specimens. The latter show con- 

 siderable variation in size and maculation, the spotted form, however, 

 is apparently rare. This form is the E. j'allax Saussure, referred by 

 that author as a variety of £. hyalina. It should be placed with 

 costalis, however, in consequence of its heavy form and darker wings 

 and also by the shape of the ventral tubercle of abdomen. 



Elis Wesmaeli Lep. 



Chapada (December, February, March and April). Numerous 

 specimens of both sexes. 



Elis cineraria Sichel. 



A large series, over one hundred specimens, is in the collection 

 from Chapada (November, March and April). The specimens 

 agree with the description of cineraria, except that there is no yellow 

 on the fourth dorsal or on any of the ventral abdominal segnjents. 

 Only males are represented ; and the series shows considerable vari- 

 ation in size, specimens measuring 16-30 mm. 



Elis variegata Fabr. 



Chapada (March). Fourteen male specimens. These only vary 

 in that two specimens have the spots on the second dorsal segment 

 united. 



Elis conspicua Sm. 



Four males. Santarem ; Chapada (March). These vary in length 

 from 12-20 mm.; and in the smaller specimens the pronotum is 

 partly yellowish, and in one the third dorsal abdominal segment is 

 bimaculated with that color. 



Elis (Dielis) angulata n. sp. 



Close to conspicua, but dorsal segments 1-4 fasciate with yellow- 

 ish, thorax less shining, and pubescence of pronotum entirely pale 

 yellowish. 



9 . — Black, mandibles medially, tegulie and tibite and tarsi more 

 or less reddish-testaceous ; transverse spot on metanotum and a band 

 on dorsal segments 1-4, yellowish, the bands on first and fourth seg- 

 ments narrow, those on second and third greatly dilated medially 



