594 CATALOGUE OF ACRIDID2E. 



This species may form a new genus, for the structure of ihe prosternal 

 spine differs widely from that of the other Acridia, and the flat antennae 

 show an affinity to the preceding families. 

 a. Australia. Presented by the Haslar Hospital. 



Oceania. 



59. ACBIDIUM EXCAVATUM. 



excavatum, Stal, Eug. Resa, 326. 

 Isle Guam. 



Country, unknown. 



60. ACRIDIUM MACULICOLLIS. 



Fcem. Fulvum; vertex antice hexagonalis ; prothorax antice nigro 

 gut talus, postice nigro strigatus ; proslerni spina robusta, subobliqua, 

 femora postica nigricante notata ; alee anticce corpore paullo breviores, 

 maculis plurimis fasciisque indeterminatis fuscescente venosis ; al& 

 posticte diaphana, nigro venoste. 



Female. Tawny. Head smooth ; fore part of the vertex hexagonal ; 

 front with four well-defined keels, the inner pair parallel, the outer pair 

 slightly diverging towards the face. Eyes piceous, elongate-elliptical. 

 Prothorax with a slight dorsal ridge and with the usual four transverse 

 impressed lines; several black dots on the fore part and some black streaks 

 on the hind border; fore border and sides slightly rounded ; hind border 

 elongate'd, rounded. Prosternal spine stout, straight, slightly oblique. 

 Hind femora shorter than the abdomen, as long as the hind tibiae, with 

 several blackish marks on each side. Spines of the hind tibiae stout, with 

 black tips. Fore wings cinereous, a little shorter than the body, with 

 numerous spots which are formed by pale brown veins and some of which 

 in the exterior part form abbreviated or interrupted bands. Hind wings 

 pellucid ; veins black. Length of the body 39 lines; expansion of the fore 

 wings 72 lines. 



