BY G. W. KIRKALDY. 379 



The o\ r a are inserted in the midrib of Saccharum officinarum, 

 the surface being whitened by the local decay. They are heavily 

 parasitised, 



The ultimate nymph is blood-red; antenna? and legs testaceous, 

 more or less suffused with sanguineous. 



Nesosylphas, gen.nov. 



Has much the appearance of a large, smooth Disphinctus, but 

 is a true Capsine, allied to Hyalopeplus Stal, and Malacopeplus 

 Kirkaldy. Head a little wider than an eye, transverse between 

 eyes, sulcate medially, horizontal in front of eyes, which are a 

 little emarginate basally, not touching pronotum, their intero- 

 lateral margins diverging a little towards apical margin of vertex. 

 Antennae articulated contiguous to e}^es at apex of vertex; first 

 segment one-half longer than vertex, somewhat incrassate and 

 curved; second about thrice as long as first; third about as long 

 as first, thinner than second; fourth less than half third, very 

 thin. Labium extending to hind coxa3. Head and eyes much 

 wider than anterior margin of pronotum. Pronotum with a 

 strong collar, which is about as long as width of second segment 

 of antennae towards apex of the latter; shortly behind this the 

 pronotum is strongly constricted, the lateral margins behind this 

 rounded and strongly diverging. This anterior lobe is about 

 twice as long as the collar and very little wider;* posterior lobe 

 about twice as long as collar and anterior lobe together; postero- 

 lateral angles subacute and rather prominent, extending dis- 

 tinctly beyond base of tegmina laterally. Posterior lobe also 

 roundedly raised. Head and anterior lobe of pronotum smooth 

 and shining; posterior lobe minutely and very feebly rugose; 

 scutellum smooth, dull, disk flat. Odoriferous orifices subauri- 

 culate, Tegmina not punctured, subhyaline, venation as in 

 Hyalopeplus. Abdomen smooth and shining. 



* I use the terms "long" and "wide " with regard to the longitudinal 

 axis of the insect. 





