the Tetriginx in the Oxford University Museum. 403 



collected by Bates ; the second male example is also from 

 Brazil. The former specimen has the pronotum little 

 more highly arcuate-cristate than the type specimen in 

 the author's collection, from Peru, besides having the 

 apex of the process more obtuse. Until more material is 

 examined these minor structural differences will be ignored 

 as being of no specific importance. This species was 

 figured by the author in Genera Insectorum, Fasc. 48 

 Orthopt., Plate III, fig. 23, 1906. 



Genus Crimisus, Bolivar. 



1, C. lohatus, sp. nov. 



Body rather crassate ; head little exserted ; eyes and vertex 

 small ; posterior femora strongly incrassate but somewhat depressed, 

 flattened below ; colour greyish-ferruginous, obscure fusco-varie- 

 gated, disc of pronotum rufous. Vertex equal in width to one of 

 the eyes, subwidened forward, the anterior carinuliB slightly roundly 

 lobulate, median carina very small and anteriorly barely produced ; 

 frontal costa convex protuberant between the antennae, slightly sinuate 

 above and below, rather widely sulcate, the rami straight ; pronotum 

 distinctly widened between the humeral angles, dorsum scabrous, 

 behind the shoulders strongly depressed, fossulate, sides little com- 

 pressed ; median carina siiuiate and pluri-interrupted, between the 

 shoulders little elevated, sinuate, before the shoulders compresso- 

 elevated, posteriorly bearing a series of small compressions ; pro- 

 cess acute, not reaching to the apices of the hind femora; lateral 

 carinse of pronotum little compressed and entire. Pronotum planate 

 between the prozonal carinae ; humeral angles distinct and obtuse ; 

 lateral lobes flattened, quadrate, the j^osterior angle obtuse, behind 

 obliquely truncate. Elytra elongate, apices acuminate ; wings abbre- 

 viated. Superior carinse of anterior femora undulate, inferior carinas 

 sinuate, bearing a lobe at the outer third ; superior margin of middle 

 femora undulate ; the inferior carina trilobate ; posterior femora 

 having the superior carina strongly arcuate, dentate towards the 

 apices ; first articles of posterior tarsi having the first two pulvilli 

 acute, the third little longer than the rest and flat below. 



Length of body entire, female, 8 mm. ; pronotum 7'5 mm. ; posterior 

 femora 5 mm. 



One example from Amazon, South America, collected by 

 Bates ; W. W. Saunders' collection, presented by Mrs. 

 F. W. Hope to the University Museum, Oxford. 



This species resembles 0. contractus, Bol., a Peruvian 

 form. 



TRANS. ENT. SOC. LOND. 1908. — PART III. (DEC.) 27 



