prolongation soniewliat spatulale in form, with the sides curved or rolled 

 upward. Pectus concave. 



Color (alcoholic) — Uniform pale greenish-yellow; doubtless green when 

 living. Tips of the antennae fuscous ; tips of the spines of the posterior tibia? 

 piceous. 



Dimensions. — Length, 1.1 inches ; elytra, 0.9 inch ; posterior femora, 0.5 

 inch. 



Florida (Glover). ' Saint John's Blufl', E. Florida (Walker). 



Walker (/. c.) places this in " Group 2 " of his genus Sfenacris, whicii he 

 locates— probably on account of the form of the autenuse — among the Acri- 

 didre proper. The following are the characters given of this group : 



" Body very slender, nearly cylindrical. Head smooth, elongate ; ti]i of 

 the vertex flat, prominent, conical ; front (face) much retracted ; keels slight; 

 inner keels converging near the face ; outer keels diverging. Eyes elliptical, 

 oblique, not prominent. Antennae slender, slightly flattened, a little longer 

 than the head and prothorax together. Prothorax finely scabrous, hardly 

 widening hindward ; keel hardly perceptible ; transverse impressed lines very 

 slight ; fore border and hind part of each side sliglitly rounded ; hind border 

 more rounded. Prosternal spine slender, slightly compressed and oblique, 

 rounded at the tip. Legs long, slender ; spines of the hind tibiae short. 

 Fore wings very narrow, as long as the body." 



His specific description is as follows : 



"Male. — Testaceous green. Head and prothorax with a whitish-green 

 stripe on each side. Eyes livid. Antennae tawny. Wings pellucid. Fore 

 wings with green veins. Veins of the hind wings black, glaucous toward 

 the base and along the interior border. Length of the body, 10 (?) lines ; 

 expansion of the fore wings, 24 lines.'' 



Notwithstanding, the slight differences between the specimen I have 

 described and this description, I am satisfied it belongs to Walker's species. 

 It is also quite possible that they belong to Opuniala mexicana, Sauss. (Rev. 

 et Mag. Zool., XHI, 1861, 156), as they agree very closely with that species; 

 but it appears rather strange that Saussure should have overlooked the pecu- 

 liarity of the vertex and anal plates, unless his specimens were females ; if 

 they were, this may account for the diflference in size, my specimen, and 

 Walker's also, being mu,ch smaller than the "measurement he has given. 



