ACRIDIDJ5. 617 



Eyes ferruginous, elongate-elliptical. Prothorax 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 interrupted by the 

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

 patch on the outer side of each outer stripe; fore border and sides slightly 

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

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

 long as the abdomen ; hind tibia? 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 antemedial patches 

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

 pale testaceous. Hind wings pellucid ; reins 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 tip of the vertex is 

 narrower and the prosternal spine is thicker. 



o. Sydney. Presented by Dr. Sinclair. 



CYRTACANTHACRTS PLAGIATA. 



Mas et fcem. Fulva ; vertex ferrugineo bis trig atus ; prolhorax scaber, 

 carina bene determinates; prosterni spina crassa, obfiqua, acuta, sub- 

 arcuata, mesoslernum attingens ; femora postica nigricante valuta ; 

 alec antica cinerece, corpori aquilonga, maculis nonnullis plaga media 

 fasciaque obliqua exteriore 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- 

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

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

 border much rounded. Prosternal spine thick, oblique, acute, slightly 

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

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

 marks ; spines of the hind tibia? 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 oblique band ; 

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

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

 the base. Far. ft. Vertex with two black streaks; front with a few black 

 streaks. Prothorax with four irregular and incomplete black stripes. 

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

 of the body 20 26 lines ; expansion of the fore wings 42 52 lines. 



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

 prosternal spine. The prothorax is more rounded in frout than that of 

 C. basalis. 



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



