1922] NATUBAL SCIENCES OF PHILADELPHIA 169 



cular lobes of femora bidentate, except those of cephalic femora 

 which are very weakly so or are very weakly unidentate. Ventral 

 femoral margins armed as follows with small teeth ; cephalic internal 



8 and 8, cephalic external 0, median internal 0, median external 



9 and 9, caudal internal 12, caudal external 14. Cephalic tibiae 

 with dorso-external margin armed with one proximal and one distal 

 spine. 



General coloration apparently light apple green in life, faded in 

 large part to light yellowish brown in this dried specimen. Head 

 with a short blackish brown line margining the dorso-internal 

 margins of the eyes and another blackish brown fleck immediately 

 below each eye. Maxillary palpi with distal joint tipped with 

 blackish brown. Pronotum with lateral margins of disk apparently 

 weakly defined in more yellowish green, with a small blackish 

 brown fleck on each side of cephalic margin immediately within 

 the lateral margins. Tegmina with a few dark brown flecks, 

 irregularly placed but the majority mesad in areas between the 

 ulnar and median veins to the latters first branch; these flecks in- 

 conspicuous, but seen under the microscope to be solid and not 

 made up of a cluster of minute flecks. Limbs unicolorous. 



Length of body 22, length of pronotum 6.7, cephalic width of 

 pronotum 2.6, caudal width of pronotum 4.2, width of pronotal 

 lateral lobe 4.3, depth of pronotal lateral lobe 5.4, length of tegmen 

 42, greatest (median) width of tegmen 12.7, distal width of tegmen 

 9.8, length of cephalic femur 7, length of caudal femur 25.7, length 

 of ovipositor 2.3 mm. 



The type is unique. 



Diastella maculata new species. Plate XV, figure 1. 



• This species, from Brunner's very inadequate description, 

 appears to be closely related to that authors D. flexuoso-cercata, 

 described from New Guinea. In the present insect the pronotal 

 disk is not concave, while the tegmina are irregularly marked with 

 large blotches of darker brown instead of being very weakly orna- 

 mented with oblique darker markings. 



The heavier structure and pronotum which expands much more 

 strongly caudad and has the ventral margins of the lateral lobes 

 nearly straight and oblique in the Australian genotype, D. latifolia 

 Brunner, may indicate that these species should be separated 

 generically. The Melanesian species agree instead with Bolivar's 

 genus Diastellida, but differ strikingly from that genus in the very 

 conspicuous widening distad of the tegmina. 



Type: 9 ; Fakfak, Dutch New Guinea. [Hebard Collection, 

 Type no. 481.] 



Vertex very strongly declivent, longitudinally sulcate but with 

 small, rounded apex entire. Face tumid. Maxillary palpi with 



