636 CATALOGUE OF 



inner keels parallel; outer keels diverging towards the face. Eyes reddish, 

 elongate-elliptical, slightly oblique and prominent. Prothorax thickly and 

 minutely punctured, with many blackish points and with an extremely 

 slight keel; fore border nearly straight; sides slightly rounded; hind 

 border more rounded. Prosternal spine long, slender, acute. Hind 

 femora as long as the abdomen ; hind tibiae rather shorter than the hind 

 femora, their spines with black tips. Fore wings cinereous, as long as the 

 body, with numerous indistinct tawny spots and dots of various size. 

 Hind wings pellucid, cinereous at the tips ; veins black, pale yellowish 

 green towards the base and along the interior border. Length of the body 

 1 1 15 lines ; expansion of the fore wings 24 29 lines. 



a d. Australia. Presented by Lord Byron. 

 e t f. Australia. Presented by Lord Mountnorris. 



Country unknown, 



A. Body with black spots. - maculicollis. 



B. Body not spotted. 



a. Fore wings much longer than the body. - - elongatum. 



b. Fore wings as long as the body, or nearly so. 



* Eyes remote on the vertex. - - consobrinum. 



** Eyes approximate. ----- obliquum. 



A. elongatum and A. consobrinum represent the typical form of the 

 genus; the elevated head of A. obliquum will establish it as a distinct 

 section. 



ACRIDIUM ELONGATUM. 



Foem. Testaceum, sat gracile; vertex antice planus, hexagonalis ; pro- 

 thorax vix carinatus ; prosterni spina pallide jftava, gracilis ; alee 

 anticce pallide cinerea, corpore mullo longiores, villa discoidali e 

 strigis obliquis fuscis , alceposticce diaphance, nigro venoste. 



Female. Testaceous, rather slender; fore part of the vertex flat, 

 hexagonal; front with four well-defined keels, the outer pair more 

 diverging towards the face than the inner pair. Eyes elongate-elliptical. 

 Prothorax scabrous, with a very slight dorsal keel and with transverse 

 impressed lines ; fore border and sides slightly rounded ; hind border 

 slightly elongated, much rounded. Prosternal spine slender, pale testa- 

 ceous. Fore wings pale cinereous, much longer than the body, with a 

 discoidal stripe composed of oblique brown streaks; veins pale. Hind 

 wings pellucid ; veins black, pale towards the base. Length of the body 

 22 lines ; expansion of the fore wings 63 lines. 



The description is taken from an injured specimen. It is nearly allied 

 to A. fusilinea. 



ACRIDIUM CONSOBBINUM. 



Fcem. Testaeeum ; vertex antice planus, hexagonalis ; prothorax postice 

 subdilatatus, margine postico producto rotundato ; prosterni spina 

 robusta, obtusa ; alee antica pallide cinere<e> corpore fequilongae^ 

 maculis plurimis fasciisque indeterminatis fuscescente venosis ; alee 

 poslica diaphana, nigro venosce. 



