N0.13C4. ' AMERICAN MANTIDfl—REHN. 569 



anal ])lato aciito triaiioiilar, toctato, tho median ridoo developed into a 

 very distinct earina. C'erci suh-lilifoini, hirsute, sliuhtly exceeding 

 the subgenital phite in length. Subgenital plate produced, apex trun- 

 cate, styles stout, short, and hirsute. Anterior cox;v slender, about 

 four-tifths the length of the pronotum; femora very slender, al)out 

 equaling the pronotum in length, spines only on the distal half, 

 external margin with live spines, one of which is apical and (|uite 

 small, internal margin bearing eleven spines which, if reduced to a 

 formula, would read from the apex posteriorly iliiililili, discoidal 

 spines three in number, straight, the anterior one very long; tibiae 

 very short and weak, with claw not exceeding one-third the length of 

 the femora, external margin bearing four closely adpressed apical 

 spines, internal margin l)earing four small, short basal spines and four 

 moderately long apical ones; metatarsi not quite equal to the follow- 

 ing joints in length. Median and posterior limbs slender. 



General color dull umber, mottled with an obscure ochraceous; 

 wings h3^aline, though infuscate with smoky brown, which tint is of 

 greatest intensit}- at the apex, where a few small blotches of dull 

 ochraceous are also visible; limbs dull ochraceous, obscurely annulate 

 with dull chocolate brown. 



MEASUREMENTS. 



mm. 



Length of body 32. 5 



Length of pronotum 9 



Greatest width of pronotum 1.9 



Length of tegmina 20. 5 



Greatest width of tegmina 5 



Length of wings 19. 5 



Genus SPANIONYX Saussure. 



1892. Spanionyv Saussure, Societas Entomologica, VII, p. 122. 



Tt/2Je. — As this case is much the same as liar jxig any, i\ we can select 

 S. hicornlrS as the type. 



SPANIONYX BIDENS Saussure and Zehntner. 



1894. Spaniouy.r hidens Sau.ssurk and Zehxtxek, Biol. Cent.-Amer., Orth., I, 

 p. 177, ])1. X, figs. 1-8; Ruatan Island, Honduras?. 



One female; Turrialba, Costa Rica. (Schild and Burgdorf.) 

 [U.S.N.M.j 

 This specimen measures as follows: 



WJH. 



Total length Ti.S 



1 A'ngth of i)ronotuni 17 



(ireatest width of pronotum 2. 5 



Length of anterior femora 11 



Length of posterior femora 9. (i 



