1913.] NATURAL SCIENCES OF PHILADELPHIA. 301 



Redtenbacher considered marginale a close ally to the congeneric 

 fasciatum, from which it was separated by the lineate femora. 

 Gray's Phasma hopii was unknown to him and accordingly placed 

 doubtfully under the genus Stratocles. The original description of 

 fasciatum gives us no clue to the color of the femora. The presence 

 or absence of the lateral thoracic line of yellowish, the slightly 

 annulate antennae and the differences in the tegminal protuberance 

 used by us to separate the Sapucay material into hopii and fasciatus 

 have been shown by Redtenbacher to be individual in character. 



The localities given in the original description, with Sapucay, 

 Paraguay, are all that were previously known. 



Subfamily CLITUMNIN.^. 

 *Steleoxiphus oatastates Rehn. 



1907. Steleoxiphus catastates Rehn, Proc. Acad. Nat. Sci. Phila., 1907, 

 p. 163, figs. 5, 6. [Sapucay, Paraguay.] 



Misiones. January 29, 1911; March 13, 1909; December 14, 

 1910. (Nos. 1, 2 and 8.) Two adult females, one immature male, 

 one immature female. 



The immature male shows conclusively that this genus is not the 

 opposite (female) sex of Paraleptynia Caudell, which was suggested as 

 a possibility in the original description of Steleoxiphus. The character 

 of the antennae, form of the head and proportions show the two to 

 be generically distinct, and in these respects the two sexes are very 

 similar. The immature male and female, both taken on December 

 14th, are similar in size, being somewhat more than half the length 

 of the adults. 



The anal segment of the male is compressed, carinate dorsad, more 

 strongly so distad, the distal margin obtuse-angulate emarginate; 

 supra-anal plate very minute, trigonal; cerci more than half the 

 length of the anal segment, crassate, subcylindrical, apex subacute; 

 subgenital plate hardly reaching the apex of the anal segment, apex 

 narrowly rotundato-subtuberculate. The immature female has the 

 subgenital operculum but slightly shorter proportionately than it is 

 in the adult. 



XIPHOPHASMA" n. gen. 



A member of the Clitumninae and related to Steleoxiphus Rehn and 

 Paraleptynia and Ceratiscus Caudell. From Steleoxiphus it can 

 readily be separated by the bispinose and broader head, the more 

 abbreviate metatarsi and the depressed and abbreviate antennae; 



" From i-Kpog, sword, and Phasma. 



