14 ANTHROCERA BXULANS. 



growth, together with their observations of its habits, 

 taken in 1882 and 1883 during their summer visits to 

 the Swiss Alps. 



Two series of the larvae of four each reached me on 

 July 13th and 14th, and a single larva on the 16th; these 

 were forwarded by Dr. Jordan from Zermatt, having 

 been found by him at an altitude of about 7000 feet, 

 at the Schwarzen See near by, feeding, while nearly 

 buried in the tufts of the leaves of Silene acaulis, and 

 often quite buried in the fleshy mass of Cherleria 

 sedoides (where they seemed to have eaten out their 

 own shape) ; some were also seen to be feeding on Tri- 

 folium alpinum, Geum montanum, Sibbaldia procumbens, 

 and Alchemilla alpina. 



Some of these larvae had spun themselves up, and 

 their cocoons got ruptured, and the half-formed pupae 

 had fallen out during their journey hither, while others 

 arrived in very perfect and lively condition, from which 

 I secured figures and descriptions. Two much smaller 

 than the others fed but very little, and in August laid 

 up motionless for hibernation; one of these became 

 attacked with mould in September and died, but the 

 smaller of the two slept safely through the autumn and 

 winter until the 19th of April, 1883, when it began to 

 crawl about rather feebly in quest of food ; it was then 

 supplied with a small spray of Medicago lupulina and 

 a leaf of Rumex acetosa ; the next day I could see it 

 had partaken of both, though sparingly ; afterwards it 

 ate of Trifolium repens and pratense, lapsing occasion- 

 ally into slumber until the end of the month, when it 

 died, probably from the necessity of changing the 

 leaves having disturbed it while waiting to moult; 

 thus, in one state or another, all the above-mentioned 

 died off. 



In June, 1883, the same two friends were in Switzer- 

 land together, and while walking over the south side 

 of the Great St. Bernard where some of the snow had 

 melted (later than usual), they found hundreds of the 

 larvae of exulans feeding in the sunshine on Silene 



