280 MEDICAL ENTOMOLOGY 



15. Abdomen reddish brown, narrow, with grey tomentose bands 

 and median spots. Palpi slender. First posterior cell 



closed nephodes. 



(Assam.) 



Abdomen brown with narrow grey tomentose bands but no 

 median spots. Palpi, large, broad. The first posterior cell 



very narrow at border alhof ascint us. 



(Assam.) 



Abdomen black, livid at base. Smaller species. First pos- 

 terior cell closed ........ basalis. 



(Sumatra.) 

 16- Large yellowish species with blackish bands on the abdomen . aurif lamma. 



(Sylhet, Assam.) 



Group VII. 



17. First posterior cell closed. Yellowish species with indistinct 



median black stripe on abdomen anna mil us. 



(Male) (Cochin China.) 

 First posterior cell open ........... 18 



18. Frontal callus oblong or narrow with lineal extension. 



Forehead at least five times as long as it is broad . . . . . 19 

 Frontal callus large, somewhat protuberant, almost square, 

 with short lineal extension. Forehead three or four times 

 as long as it is broad ........... 36 



19. Abdomen with a median stripe and lateral stripes or spots .... 20 

 Abdomen with one median continuous stripe only, no lateral 



spots, or only isolated ones on the second segment ..... 27 



Abdomen with lateral stripes only ......... 35 



20. Frontal callus with a spindle-shaped lineal extension . . . . . 21 

 Frontal callus with the lineal extension not spindle-shaped .... 22 



21. Abdomen blackish or reddish brown with grey median and 



lateral stripes, almost all the same length .... st rial us. 



(Widely distributed 



throughout India ; Burma ; Assam ; Ceylon ; Malay ; Sumatra ; Java and Philip- 

 pine Islands.) 



Abdomen with grey median stripe beginning only on the third 

 segment, and with lateral stripes ending on the third or 



fourth segment hilaris. 



(Bengal ; Assam ; S- India.) 



22. Abdomen with a median stripe, the side spots small and 



indistinct ............. 23 



Abdomen with a median stripe, the side spots large and 



distinct . . . 24 



23. Smaller species. Abdomen reddish yellow, darker at apex. 



Thorax blackish. Forehead eight times as long as it is 



broad . abbreviatus. 



(Bengal ; Java ; Formosa.) 



24. The median abdominal stripe composed of almost equal sized 



spots not very large . . . . .' . . ... ... 25 



The median abdominal stripe composed of spots of ^unequal 

 size, those on the third and fourth segments very large 

 and conspicuous ........-..'./ 26 



