JAMES A. G. REHN 353 



portion distad of this proportionately very slender. Median femora about 

 one and one-half times as long as the pronotal disk, api)reciably more slender 

 than the cephalic femora; median tibiae slender, tapering, appreciably sur- 

 passing the median femora in length. Caudal femora slightly shorter than 

 the body, moderately inflated in proximal half, very slender distad; internal 

 genicular lobes briefly spiniferous, external genicular lobes unspined; ventro- 

 external margin with five to eight spines, ventro-internal margin with one to 

 two spines: caudal tibiae very slender, faintly tapering, subcomi^ressed proxi- 

 mad, surpassing the caudal femora by nearly the length of the pronotal disk. 



General color of the head and pronotuni light chalcedony j'ellow, becoming 

 amber yellow on the pleura and abdomen, the apex of the latter Veronese green, 

 the dorsum of the pronotum washed with mustard yellow. Tegmina clear 

 hyaline with the venation and reticulation courge green, numerous areolets 

 distad washed with bice green; stridulating field touched with buckthorn 

 brown. Exposed portion of the wings colored similarly to the distal section 

 of the tegmina. Eyes russet touched with chestnut-brown cephalad. Limbs 

 of the general color, tibiae tinted with biscay green to forest green, the latter 

 heavily so distad. Cephalic and caudal femora and disk of pronotum with 

 numerous minute black points of liver brown. 



Length of body, 15 mm.; length of pronotum, 3.8; greatest (caudal) width of 

 pronotal disk, 2.3; length of tegmen, 22.8; greatest width of tegmen, 4.2; 

 length of caudal femur, 13.5. 



The type of this interesting species is unique. We take great 

 pleasure in dedicating this striking species to Prof. Anastasio 

 Alfaro, Director of the Museo Nacional, San Jos:% Costa Rica, 

 who coll(H'ted and forwarded to us for study the type of this 

 species, and also numerous other Orthoptera. 



Pycnopalpa aurigera n(>w species (PI. XIX, figs. 5 and G; pi. XX, fig. 3.) 



Closely allied to P. rubiginosa (Bruner) [Topana rubiginosa 

 Bruner],^" fi'om Chapada, Matto Grosso, Brazil, having the 

 general form of the pronotal structure quite similar, but differing 

 in the fastigium of the vertex being less strongly bicarinate and 

 less distinctly sulcat(% in the l)roadcr head, the more elongate eye, 

 the less inflated distal palpal joint, the straighter lateral margins 

 of the pronotal disk, in the much less extensive lateral lobes of 

 the same, the proportionately broader marginal field of the teg- 

 mina, the distal half of the whole of which is more broadly 

 angulatc, in the more acute exposed section of the wings and in 

 the proportionately shorter limbs. 



Type. — 9; Chanchamayo, Peru. [Academy of Natural 

 Sciences of Philadelphia, Type no. 5352.] 



'"Ann. Carneg. Mus., ix, p. 330, (1915). 



TRANS. AM. ENT. SOC, XLIV. 

 3 



