1904.] NATURAL SCIENCES OP PHILADELPHIA. 675 



Measurements. 



Length of jjody, 30.5 mm. 



Length of pronotum, 4.8 " 



Length of tegmina, 30.5 " 



Length of caudal femora, 16.5 " 



Two females of this species have been studied, the additional speci- 

 men being in every way identical with the type. 

 Erucius dimidiatipes Bolivar. 



1898: Erucius dimidiatipes Bolivar, Ann. Mus. Civ. Stor. Nat. Geneva, 

 XXXIX, p. 81. [Si-Rambe, Sumatra.] 



Goenong Soegi, Lampong, Sumatra. October-November, 190L 

 (A. C. Harrison, Jr., and Dr. H. M. Killer.) [A. N. S. Phila.] Two 

 males. 



The basal portion of the caudal femora of these specimens have re- 

 tained their original color, which is Chinese orange. By an unfortu- 

 nate transposition in Burr's key the femora of this species are de- 

 scribed as ''basi nigra, apice pallida," while Bolivar's original reads: 

 "Femora postica pallida, dimidio apicali nigro." 



Section Eumastaces. 

 EUMASTAX Burr. 

 1899. Eumastax Burr, Anal. Soc. Espail. Hist. Nat., XXVIII, p. 257. 

 Type. — Mastax tenuis Perty. 



Eumastax dentatus Saussure. 



1903. Eumastax dentatus Saussure, Revue Suisse de Zoologie, XI, fasc. I, 

 p. 91. [Palmares, Costa Rica.] 



Carrillo, Costa Rica. [Hebard Collection.] One male, one female. 

 Costa Rica. (Schild and Bergdorf.) [U. S. Nat. Mus.] One male. 

 The female individual is somewhat smaller than Saussure's measure- 

 ments, but otherwise is identical. 



PAEAMASTAX Burr. 



1899. Paramastax Burr, Anal. Soc. Espafi. Hist. Nat., XXVIII, p. 268. 



Type. — Mastax nigra Scudder. 



Paramastax magna (Giglio-Tos). 



1898. M[astax] magna Giglio-Tos, BoUett. Mus. Zoolog. Anat. Comp XIII 

 No. 311, p. 38. [Valley of Santiago, Ecuador.] 



Pichesjand Perene Valleys, Peru, 2,000-3,000 feet. (Soc. Geog. de 

 Lima.) [U. S. Nat. Mus.] One male. 



The'male of this species is said by Burr to have the face unicolor, but 

 in the individual before me it and the genae are marked with a broad 

 band_of yellowish, as in Iceta. personata and other species. The charac- 



