180 PROCEEDINGS OF THE ACADEMY OF [May, 



In addition to the type and allotype we have before us a paratypic 

 pair (one— the male — dated January 17, 1912), which show no note- 

 worthy differences from the type material, except that the male has 

 the general coloration more olivaceous, but this we feel is due to dry- 

 ing. 

 Bucephalacris falcifer n. sp. (PI. I, figs. 32, 33.) 



Apparently a near relative of B. corallipes Bruner,'^** from Corumba, 

 Brazil, agreeing in the robust form, the closely veined tegmina and 

 the coral red caudal tibiae. The new form differs, however, from 

 corallipes in the female sex (the only one known of corallipes) having 

 the head higher than wide, in the eyes being less than twice as long 

 as the cephalic margin of the cheek, in the fastigium being distinctly 

 broader than long, in the unhanded pronotum and in the longer 

 tegmina. 



Type: d^; Para, State of Para, Brazil. (C. F. Baker.) [Acad. 

 Nat. Sci. Phila., Type no. 5288.] 



Size small: form robust: surface of face, lower portion of gense, 

 pronotum and pleura closely but not very deeply cribroso-punctate, 

 occiput very shallowly punctate. Occiput arcuato-bullate, well 

 elevated dorsad of pronotal level, at highest point faintly flattened; 

 interocular portion of vertex very narrow, hardly more than one- 

 fourth the width of the proximal antennal joint, weakly sulcate in 

 caudal section; fastigium very faintly declivent, the greatest length 

 subequal to the greatest width, in general form pentagonal, the ceph- 

 alic margin strongly truncate and appreciably cingulate, the surface 

 impressed, weakly nodulose and with a short, rather fine, medio- 

 longitudinal carina: frontal costa dorsad four times as broad as the 

 interocular space and subequal in width ventrad to the median ocel- 

 lus, ventrad of which the margins are strongly constricted, then di- 

 verging an equal amount and obsolete ventrad of this point, the in- 

 terantennal section of the costa is excavato-sulcate, distinctly punc- 

 tate, surrounding the ocellus the surface is impresso-punctate, thence 

 faintly sulcate for a short distance and then passing into the punctate 

 face: lateral facial carinae indicated, but developed only as an angle 

 of the face, moderately diverging ventrad, punctate as the face : eyes 

 quite prominent, more than twice as long as the infra-ocular portion 

 of the gense, in basal outline broad ovate, slightly flattened cephalad : 

 antennae- lacking. Pronotum narrower than the caudal width of 

 head, faintly constricted mesad, the greatest dorsal width of disk 



30 Ann. Carneg. Mus., VIII, p. 93, (1911). 



