384 PROCEEDINGS OF THE THIED ENTOMOLOGICAL MEETING 



November have been observed in January to feed on ratoon shoots 

 growing from stubbles. During the active season the life-cycle is com- 

 pleted in about six weeks, viz., egg 5 to 6 days, larva 25 to 30 days and 

 pupa 9 to 10 days. Eggs are deposited mostly on leaves in clusters 

 covered over with brown hairs. The young larvae hatch and bore into 

 the stem in the middle of which they feed and pupate. As will appear 

 from the record of its occurrence along with the other borers in rice 

 (Table XII), it is found in small numbers up to about September, after 

 which oviposition takes place on a very large scale on rice in ear in 

 October and the earlier part of November. The larvae which hatch 

 from these eggs hibernate. (Plate 42, fig 3.) 



ScJiosnobius sp. (C. S. 1780). 



Foodplant — Narkat {PJmigmites karJca). 



The larvae and pupae of this species are apparently indistinguishable 

 from those of Schoenobius bipunctifer, with which it seems to agree in 

 seasonal history. 



Frocometis irochala (C. S. 1708). 

 Foodplant — ^Usually decaying sugarcane stem. 



The larvae of this moth were found in drying stems of sugarcane 

 which they were boring. On only one occasion a larva was observed 

 boring a faesh stem. The larvae have the habit of webbing up pellets 

 of excreta and forming galleries under which they live hidden. The 

 fullgrown larva measures about 28 mm. in length, has a dark brown 

 glossy head, a large prothoracic plate of the same colour as the head 

 and the body dirty hght-brown with six yellowish longitudinal stripes 

 on the back. The tubercles on the segments bear longish hairs and 

 are small bro^vn spots, the supraspiracular ones being larger than the 

 others. The five pairs of prolegs are equally developed. 



Pupation takes place in the stem in holes previously made by the 

 larva and opening on the side of the stem. The pupa is brown and 

 can be easily distinguished by a pair of pointed spines on the hind end 

 joined at their bases and bent so much ventrally as to have their longer 

 axis almost at right angles to the axis of the body of the pupa. 



