158 THE entomologist's record. 



the box — the second pair of prologs moving round but adhering. It 

 kept its back concavely arched all the while in order to keep the 

 thread taut till it reached the right-hand side of the box. This done 

 it touched the side with the first two pairs of thoracic legs, which, 

 during the circular movement, it had kept fully outstretched at right 

 angles to its body whilst feeling about with its mouth for a suitable 

 spot for fixing the thread. Having fixed it down, for which purpose it 

 always made a quick movement with the first pair of thoracic legs as 

 though to guide the girdle and pull it taut, it fixed another thread 

 outside the former one, and always brought it back insdde by crossing 

 it about an eighth of an inch from the surface of the box and then 

 stretched its thoracic legs again out at right angles as it did so. 



Each thread was carried below the former one, i.e., nearer the 

 second pair of thoracic legs in the suture between the two pairs, and 

 the operation, which took in all one hour and twenty minutes, was 

 repeated seventy-four times in the individual which 1 had under obser- 

 vation. By-the-bye, it spun an unusually stout girdle for L. philenor 

 (quite a third thicker than was the case with most of my larvae). 

 Under the vitascope I could now see that the complete girdle, 

 though apparently one to the naked eye, was in reality composed of 

 close but separate threads. 



The larva without making any further pause passed its head 

 under the left-hand side of the loop (like a man putting on his shirt), 

 and wriggled, arching its back violently, until the girdle was in its 

 proper position. 



The Lepidoptera of the Orisons — The Fluela Pass. 



By J. W. TUTT, F.E.S. 



With our visit to the Sertig-Thal on August 5th, 1908 (see antea), 

 we determined to make a move, indeed, the visit to Davos was only 

 a passing desire to know what the country aroiind was like entonio- 

 logically and otherwise, for, long before, it had been mentally agreed 

 that the summit of the Fluela Pass, and the higher slopes of the 

 surrounding mountains, would prove a very suitable hunting-ground, and 

 so, no doubt, it would, but, with a portion of the bad luck experienced on 

 this journey, which arranged itself somewhat perversely and contrary 

 to our desires, we found ourselves travelling in fine, and settled down 

 to spy out the country in wet and cloudy, weather. At any rate, the 

 stay at Fluela was the most unfortunate we had experienced for a long 

 time. The morning of August 6th was dull and threatening, but rain 

 did not really fall till we were well in the Fluela- Thai, and then, in 

 spite of one or two showers of sleet, there were moments when the sun 

 shone with brilliancy and poAver, and one hoped that the weather 

 might improve. However, by the time the summit was reached we 

 were in a steady downpour, the lakes, no doubt lovely in fine weather, 

 only added to the surrounding wetness and feeling of uncomfortable- 

 ness ; it poured all day and night, all the next day and night without 

 intercession, but, waking early on the morning of the 8th, the sun was 

 shining on the mountain opposite, and hope was revived. Closer 

 inspection of the sk}-, however, was not too promising, yet, by fits and 

 starts, the sun promised something brighter, and after an early break- 

 fast we started out. The tops of the mountains were still shrouded in 



