220 PKOCEEDINGS OF THE ACADEMY OF [May-Oct.,. 



These specimens have been compared with the type of the species. 

 In this form the venation of the wing shows much individual varia- 

 tion in the number of rami of the principal veins. Both of the Goyaz 

 specimens are somewhat larger than the Sapucay individuals (type 

 and paratypes). 



The present record extends the range of the species to the north- 

 ward. 



Angela infuscata (Chopard). 



1911. Thispis infuscata Chopard, Ann. Soc. Entom. France, LXXX, p.. 

 320. [Saint Jean du Maroni and ISouveau Cbantier, French Guiana.] 



Obidos, Rio Amazon, State of Amazonas. One male. [A. N. S. 



P-] 



This specimen agrees with two cotypes of this species now in the 



Hebard Collection. The range of the form is extended southward 



into the Amazon vaUey by the present record. 



MIOPTERYGINAE. 



TRACHYMIOPTERYX^ new genus. 



This genus is nearer to Pseudomiopteryx Saussure and Eumiop- 

 teryx Giglio-Tos than any others. Its relationship to Pseudomiop- 

 teryx is much less intimate than that with Eumiopteryx, and from 

 the former the new genus can be immediately separated by the 

 absence of a frontal spine and the angulation of the latero-cephalic 

 sections of the pronotal margins. From Eumiopteryx its differences- 

 are more subtle, yet distinctly evident. The basal outline form of 

 the pronotum is much the same as in Eumiopteryx, showing, however,, 

 a slight angulation to the expansion, which is suggestive of that 

 found in Pseiulomiopteryx, but the dorsal surface has three pairs of 

 pronounced tubercles ; the vicinity of the transverse sulcus is strongly^ 

 sellate; the occipital outline is distinctly arcuate emarginate, instead 

 of subtruncate as in Eumiopteryx, and the juxta-ocular lobes are- 

 decided and rectangulate; the facial shield is deeper in proportion, 

 while the tegmina are more ample, as in Pseudomiopteryx. 



The present genus is apparently a type intermediate between the- 

 two genera with which it has been compared, but sufficiently distinct 

 to be generically recognized. 



Genotype. — T. tuberculata new species. 



Trachymiopteryx tuberculata new species. (Plate X, figs, l and 2.) 



Type. — cf ; Goyaz, State of Goyaz, Brazil. [Hebard Collection,. 

 Type no. 216.] 



^ From tgixyyq rough and Miopieryx. 



