1913.1 



NATURAL SCIENCES OF PHILADELPHIA. 



103 



spicuous; frontal costa punctate dorsad, sulcate ventrad; eyes 

 prominent; antennae fifteen-jointed. Pronotum punctate, with no 

 prominent lobes or carinae, transverse sulci well impressed. Tegmina 

 exceeding the apex of the abdomen, narrow, tapering. Interspaces 

 between the mesosternal and metasternal lobes subquadrate. 

 Ovipositor jaws short and thick. Caudal limbs robust, femora with 

 the margins finely serrate; external margin of the tibia? with six 

 spines, no apical external spine present; tarsi with the first and third 

 joints subequal, second about half the length of the first. 



Type — 0. robusta n. sp. 

 Oulenotacris robusta n. sp. 



Type: 9 ; Surinam. May-September. [Hebard Collection.] \^ 

 Size moderately small; form very robust; surface of pronotum, 

 pleura, face and dorsal face of the femora punctate. Head with 

 the dorsal length about three-fifths 

 that of the pronotum; occiput very 

 shghtly arched, descending appreciably 

 to the interocular region which is about 

 equal in width to half that of the 

 fastigium; fastigium shghtly broader 

 than long, rectangulate with the apex 

 truncate, dorsum with a distinct but 

 very slight longitudinal line; fastig- 

 ial process moderately protuberant 

 when seen from the side, rotundato- 

 truncate, face slightly retreating; 

 frontal costa broadest between the 

 antennae, distinctly constricted ven- 

 trad of the ocellus and toward the 

 sutural margin, not very deeply 

 sulcate around and ventrad of the 

 ocellus, punctate dorsad; supple- 

 mentary facial carinae prominent, sub- 

 parallel; no distinct lateral foveolae; 

 eyes subreniform ovate, distinctlj^ 

 longer than the infra-ocular sulcus, 

 very prominent from both aspects; 

 antennae about equal to the head and 

 pronotum in length, thick, slightly 

 depressed, blunt. Pronotum with 

 the greatest width of the disk, about 

 four-fifths the length of the same 



Fig. 16. — Oulenotacris robusta 

 n. sp. Dorsal view of type. 

 (X3.) 



?phalic margin gently arcuate 



