CHEYSOPILUS. 129 



Table of Species. 



1. Wim>s distinctly or darkly mottled (some- 



what Tn/peta-like), or uniformly dark 



brown 2. 



Wings never mottled or uniformly dark 

 brown ; somewhat yellowish or (kumeralis 

 only) pale brown 6. 



2. Winga more or less mottled 3. 



Wings uniformly dark brown 5. 



3. The pale spot beyond but contiguous to the 



stigma quite clear and sharply defined ; 1st 

 and 2nd subrnarginal cells and all pos- 

 terior cells with a well-defined clearer 

 spot at tip of each, but the outlines not [p. 131. 



sharply demarcated marmoratus, Brum, 



The pale spot adjacent to the stigma very 

 indefinite, not sharply defined ; no wing- 

 border spots distinguishable from the rather 

 clearer middle parts ot most uf the cells . . 4. 



4. Prongs of upper branch of 4th longitudinal 



vein issuing from discal cell well sepa- 

 rated ; ground-colour of hind border of 

 wing of same shade as remainder of wing; 

 stigma brown, rather ill-defined; length, [p. 131. 



3 mm albopictus, Brum, 



Prongs of upper branch of 4th longitudinal 

 vein issuing from discal cell united or 

 nearly so ; hind part of wing nearly clear, 

 except for the infuscations along the veins; 



stigma nearly black, more sharply defined ; [p. 132. 



length, 4 mm ornatipennis, Brum, 



5. The long dark brown stigma uninter- [p. 133. 



rupted luctuosus, Brum, 



Stigma interrupted by an elongate yellow [p. 133. 



spot Jlavopunctatus, Brum, 



6. Wing with six bluish opalescent spots ; 2nd 



posterior cell much longer than 3rd opalescens, sp.n.,p,134. 



Wing without traces of opalescent spots; 

 2nd posterior cell subequal to 3rd, at least 

 in all my species 7. 



7. Mainly black species, at least the thorax . . 8. 

 Mainly yellowish or brownish species, at 



least the thorax almost always so 18. 



8. Wings with a distinct suffusion in addition 



to stigma; (wings pale brown in humeralis 



only) 9. 



Wings unmarked except for the stigma .... 13. [p. 135. 



9. Wings uniformly pale brown humeralis, Brum, 



Wings never uniformly pale brown ; prac- 

 tically clear, with more or less distinct 



suffusions 10. 



10. Wing-tip clear, a distinct brownish suffu- 

 sion from stigma to beyond middle of [p. 135. 



wing segmentatus, Brum, 



Wing-tip always distinctly infuscated .... 11. 



K 



