123 



The whole larva is sparsely covered w^ith short fine hairs. 

 Leng-th 45 mm. A ver}^ ordinary looking larva, and forming 

 a striking contrast to the brilliant larvae of C. nupera and the 

 two European species. When at rest it bends its head to one 

 side, after the manner of the larvge of Lithophane, thus differ- 

 ing from C. nupera^ which rests straight along the stalk of its 

 food plant. I obtained the eggs from which I reared this larva 

 by confining a female in a box with leaves of Iris, on which it 

 laid a large bunch. The larvae however did not thrive on this 

 plant, and only one or two came to maturity. 



Calpe canadensis Beth. Color greenish white. A row of 

 irregular black spots above ; another row of black spots on each 

 side, three on each segment and one between. The middle 

 spot on each segment is larger than the other two, and partially 

 encloses a bright yellow patch above it. Beneath dull green, 

 contrasting with the yellowish white color of the sides. Head 

 greenish yellow with six black spots, two larger above and four 

 smaller about the jaws. Eleventh segment slightly humped and 

 with three conspicuous black spots. Length 35 mm. Spun a 

 frail cocoon among some moss, and emerged about a fortnight 

 after, June 22. Feeds on Thalictrum cornuti. The young 

 larva spins a case for itself, when about to change its skin. The 

 mature larva is very showy and conspicuous. 



Roland Thaxter. 



Oviposition in Spiders. 



In Psyche, v. 2, p. 33-34, I described the method by 

 which the eggs are laid and enclosed by several spiders that 

 make cocoons attached by one side. In July last I had the 

 good fortune to see the 

 method of oviposition of 

 Drassus, which carries the 

 cocoon in its claws or leaves 

 it loose in the nest. A fe- 

 male, who had been kept 

 several days in a bottle, be- F's- s. 



gan her cocoon early one morning, and when I first saw 



