1902] 95 



where no prolegs exist, but the true legs are present. Whether the 

 arrangement of the last segment affords any means of holding on or 

 not, it seems very probable that its object is to afford a hard, chitinous 

 surface, ventrally as well as dorsally, so as to have a solid wedge 

 with which to open the valvular end of the case, or slit in the mine, 

 for the ejection of frass. 



The females were somewhat in excess of the males, and more so 

 towards the end of the period of emergence, thus on October 9th, 

 there were 2^s and S ? s. On October Stb, not one emerged, it was 

 a cold, blustry day, and putting the jar the pupa) were in so near the 

 tire as almost to be roasted, did not alter their determination. The 

 same fact was observed earlier, when only one or two came out on a 

 dull, wet day, followed by 30 odd the next day. How the weather 

 affected them in a jar in a room (without a tire, certaiuly) is difficult 

 to understand, or what element was efficient in the weather variation, 

 it could hardly be temperature, one would suppose, yet could hardly 

 be anything else. The emergences all took place between 7.30 a.m. 

 and 9.30 a.m. Nine-tenths between $ and 8.30. 



The moths could jump a distance of about an inch, this is 

 apparently a common accomplishment of many " Micros," which cer- 

 tainly seem to jump ; aud though one attributes the movement to 

 wing action, it is probably not so, since I frequently observed 

 G.familiella jump in this way before its wings had begun to expand. 



Several specimens escaped in the room, and for the most part 

 dived, those that were not followed by the eye at the moment hid 

 themselves effectually at once, and were never seen again, as they did 

 not take to the windows or Hy to the light. 



In ovipositing, the moth goes over the leaf slowly, touching the 

 surface very frequently with the abdominal apex, apparently to ascer- 

 tain whether a suitable spot has been found. When found, she settles 

 down, directing the terminal abdominal segments nearly vertically to 

 the leaf, or perhaps with the apex directed slightly forwards. One 

 specimen observed maintained this attitude for 11 minutes. This 

 attitude is also that of Iiicui'varice. 



The under-side of the leaf of Cistus salvi/'oliua is covered closely 

 with very beautiful stellate hairs. These are very sparse on the upper 

 surface of the leaf, often indeed, almost wanting, except at the margins. 

 This circumstance appears to fully account for the fact that the moth 

 selects the upper surface of the leaf for ovipositiou, since it would 

 usually be practically impossible to reach the leaf surface beneath 

 with her piercing ovipositor. 



