arrangement of the species of Cirphis, he places unipuncta 

 amongst those not having these tufts of hair in the male. 



This insect occui-s as a pest in many widely separated parts 

 of the globe. In the United States it is a bad pest on corn and 

 other cereals. It ranges from C^anada south to all southern 

 parts of Xorth .Vmeriea, West Indies, and then South Anun'ica 

 to Argentina and Chile. It occurs in Madeira, Azores, Britain 

 and South Europe; Southeastern Siberia, Japan, China, India, 

 ^lalay Islands, Australia, and i^ew Zealand. It has sporadic 

 outbreaks, when it is extrenielv destructive to grass and farm 

 cro])s devastating whoh' tields and travelling in army-like mi- 

 grations to others adjacent. Fortunately there are numerous 

 parasites, which keej) it in check for most of the time; but for 

 unexplained reasons there are times when they increase beyond 

 the control of parasites and prechitors, and are temporarily very 

 destructive, until again (diecked by the increase of the parasites. 



In these islands, they usually occur in the lowlands and 

 grassy regions; and when abundant in sugar cane fields it is 

 those fields which adjoin fields of grass, or which have more or 

 less grassy gulches in them, or in fields which have been recently 

 planted on land that had lain fallow and had grown up with 

 grass and weeds, or had been in pasture for a time. Although 

 the moths breed more or less the year round, they are more 

 prolific, or breed more favorably during the so-called winter 

 months, jSTovember to A|)i'il. In many districts tliere is more 

 rain during these months and growths of grass occur favorable 

 for the feeding of the caterpillars. At this time of the year, 

 in fields of young cane situated as above designated, they often 

 are present in sufficient nun'd)ers to severely check the growth 

 of the cane. They, in cf)nnection with other cut worms, some- 

 times strip the leaves of the cane, leaving nothing but midribs. 

 This may be only in certain ]>arts of the field, or it may be 

 over a considerable area of it. As the caterpillars feed for 

 about three weeks or a month, while getting their growth, the. 

 cane will be checked for this k^igth of time ; but after the cater- 

 pillars of one brood have become full-grown and cease feeding, 

 there will be a jieriod of a few weeks before the next brood, so 

 that the cane will have a chance of recovery, and the larger it 

 gets the better is it able to withstand further attacks. 



