ACRIDID^. 617 



Eyes ferruginous, elongate-elliptical. Prolhoiax finely scabrous, with a 

 slight keel and with two much abbreviated black stripes in addition to the 

 inner pair before mentioned ; keel not rounded, slightly inlerrupted by the 

 transverse impressed Hues, which are distinctly marked ; a quadrate pale 

 patch on the outer side of each outer stri|)e; fore border and sides slightly 

 rounded; hind border much rounded. Prosiernal spine stout, oblique, 

 slightly curved, extending nearly to the mesosternum. Hind femora as 

 long as the abdomen ; hind tibiae testaceous, a little shorter than the hind 

 femora, their spines with black tips. Fore wings pale cinereous, diaphanous, 

 a little shorter than the body ; disk with some large aulemedial patches 

 aud postmedial spots which are formed by black veins ; veins elsewhere 

 pale testaceous. Hind wings pellucid ; veins black, pale green towards the 

 base and along the interior border. Length of the body 18 lines ; expansion 

 of the fore wings 37 lines. 



It has much resemblance to C. simulatrix; the lip of the vertex is 

 narrower and the prosiernal spine is thicker. 



a. Sydney. Presented by Dr. Sinclair. 



Cyrtacanthacris plagiata. 



Mas et foem. Fulva ; vertex ferrugineo bislrigalus ; prothorax scaber, 

 carina bene determinata ; proslerni spina crassa, obliqua, acuta, sub- 

 arcuata, mesosternum attingens ; femora postica nigricante votata ; 

 alix anticcE cinerea, corpori aguilongce, maculis nonnuUis plaga media 

 fasciaque obliqua exleriore fuscis aut nigricantibus aut nigricante 

 venosis. 



Male and female. Tawny. Head smooth, with two ferruginous 

 streaks which converge from the hind border; fore part of the vertex hexa- 

 gonal; front thinly punctured, the inner keels hardly diverging, the outer 

 pair distinctly diverging towards the face. Eyes elongate-elliptical. Pro- 

 ihorax scabrous, with a distinct dorsal ridge and with the usual four 

 transverse impressed lines; fore border rounded; sides straight; hind 

 border much rounded. Prosiernal spine thick, oblique, acuie, slightly 

 curved, extending to the fore border of the mesosternum. Hind femora 

 longer than the abdomen and ihan the hind tibiae, with some blackish 

 marks ; spines of the hind libias with black tips, longest on the inner side. 

 Fore wings cinereous, as long as the body, with several brown or blackish 

 spots; a large patch in the middle; an exterior abbreviated oblicjue band ; 

 some of ihe more exterior spots formed only by dark veins; the veins else- 

 where whitish testaceous. Hind wings pellucid ; veins black, blue towards 

 the base. Var. j8. — Vertex with two black streaks; front with a few black 

 streaks. Prothorax with four irregular and incomplete black stripes. 

 Var. y. — Veins of the hind wings pale yellow towards the base. Length 

 of the body 20 — 215 lines ; expansion of the fore wings 42 — 52 lines. 



From C. irregularis it differs more than C. basalis in the shape of the 

 prosiernal spine. The prothorax is more rounded in front ihau that of 

 C. basalis. 



a, b. Australia. From Mr. Macgillivray's collection. 



