211 



but would rather suppose he is mistaken as to the locality of his specimens, 

 or in identification. But that this may be tested hereafter, I have added a 

 description of the species from Serville. 



TO]fI©]¥OTlfS, Sauss- 



I give here Saussure's generic description, that his divisions may be 

 better understood. 



Body compressed. Antennse dilated or filiform. Head vertical ; vertex 

 horizontally produced, trigonal in front ; plane of the foveola elevated, emar- 

 ginate, frequently transversely sulcate ; front elevated ; face much compressed, 

 prismatic; lateral carinee antrorsely arcuate, produced to the clypeus; costa 

 very prominent, its sides vertical, obliquely truncate. Pronotum in front and 

 behind angulate, cristate ; no lateral carinse in front, acute on the posterior 

 part. Elytra full size. Posterior femora compressed, dilated. Much like 

 the genus Tropeonotus {Tropinotus, Serv.), but differs in the head, being ver- 

 tical ; femora dilated and the prosternum unarmed. Somewhat similar to 

 Pachytylus, Init the fronto-vertical angle is straight, and differs also in the 

 foveolse of the vertex and the prominent facial costa being narrow above. 

 {OEdipoda sulphurea, Burm., agrees accurately with this genus.) 



Division 1. — Fastigium of the vertex not detlexed, sometimes sub-ascend- 

 ing, terminating in a V-form trigonal angle, margins acutely elevated (head 

 like Tropeonotus) : 



a. AutenntE slender, T. sulphureus, Burm. 



b. Antenn£e flattened, T. zimmermanni, Sauss. 



Division 2. — Apex of the vertex flat, furnished with a more or less dis- 

 tinct foveola, sub-deflexed, truncate : 



a. Face much elongated, prismatic; costa straight; lateral foveolse of 

 the vertex conspicuous; dorsal carina elevated into a strong crest (pronotum 

 like Tropeonotus). 



T. niexicaiius, Sauss., Rev. et Mag. Zool., XIII (1861), 321. 



Fuscous or bay, granulose-scabrous, and punctato-pilose. Foveola of the 

 vertex not deflexed, rugose ; the margins carinated ; of the female broad, 

 sub-pyriform, flat ; of the male excavated, narrower, tri-lobed ; median lobe 

 elongate, reaching to the frontal costa ; lateral foveolse very distinct. Face 

 somewhat deflexed, prismatic ; the costa very prominent, coarsely punctate. 



