1913.] NATURAL SCIENCES OF PHILADELPHIA. 295 



The second description given by Saussure^^ shows some points of 

 difference from our material, and it is quite probable that he had 

 another (Brazilian) species before him. Our specimens have no 

 trace of a covering or overcapping projection of the front extending 

 over the inferior ocellus, as described by Saussure, in fact there is no 

 approach to a development of this sort of structure, which is so 

 marked in Pseudomiopteryx and toward which Saussure considered 

 rustica, as understood by him, to tend. The cephalic coxae are very 

 finely serrulate instead of unarmed as stated to be by Saussure. 



One of our specimens is more decidedly infuscate than the others, 

 being as dark as specimens of Pseudomiopteryx infuscafa, but this is 

 apparently individual. 

 *Paramusonia livida (Serville). 



1839. Thespis livida Serville, Hist. Nat. Ins. Orthopt., p. 172. [Brazil.] 



Misiones. April 30 and May 3, 1910. (No. 5.) ''Flies at night." 

 Two males. 



Aside from the type locality, this species has also been recorded 

 from Sapucay, Paraguay, with material from which latter place the 

 present individuals have been compared. 

 Paramusonia seclusa n. sp. 



Type: cf ; Alto Pencosa, Province of San Luis, Argentina. Elev. 

 660 meters. December 20, 1908. (P. Jorgensen.) [Acad. Nat. 

 Sci. Phila., type No. 5,213.] 



This species in general size is much the same as P. livida, but the 

 form of the pronotum is very slender, more as in the other species 

 of the genus, from all of which it differs markedly in the brevity of 

 the same portion. 



Size medium (for the group), form moderately bacilliform. Head 

 strongly transverse, the greatest depth contained about one and 

 one-half times in the width; occipital margin arcuato-truncate 

 between the transverse sulci, laterad of the same well rounded, 

 hardly produced; ocelli very large, placed in a triangle; eyes very 

 prominent, ovoid in form when seen from the side, prominent; an- 

 tennae with the joints appreciably but very gradually increasing in 

 length distad. Pronotum with the greatest width contained about 

 four and one-half times in the length of the same; shaft distinctly 

 broader than the collar and both subequal in width, the margins of 

 the collar rounded at the cephalic extremity and slightly expanded 

 caudad to the rotundato-obtuse supracoxal expansion, caudal 



^ Miss. Scient. Mex., Rech. Zoolog., VI, p. 277. 

 20 



