98 THE CANADIAN ENTOMOLOGIST. 



about 12 mm., and are of a dull purplish-brown color; venter pale 

 yellow, tinged with pink and marked with a brownish stripe on each outer 

 edge, and with two rows of brown spots, these not extending upon the 

 iirst three segments ; head retractile, dull blackish, the region of the jaws 

 polished brown, and furnished with four black prickles, the upper two of 

 which are placed transversely, the lower two longitudinally. 



The pupa mentioned above tapered quite regularly from the head to 

 the tail, and was of a blackish color, shaded in places with whitish ; seg- 

 ment one tlattened above, and on each outer edge, near the anterior end 

 of the segment, are two white, fleshy horns, the posterior ones the longest ; 

 on each posterior angle of this segment is a long, white horn, curved 

 backward ; on the anterior part of each abdominal segment is a sharp 

 transverse ridge, which unites at right angles with a subdorsal ridge that 

 extends lengthwise across the segment ; near the places where these ridges 

 meet is a low whitish tubercle ; a stigmatal row of whitish horns, two to 

 each segment, curved forward, those on the first abdominal segment the 

 longest, those on each succeeding segment shorter than those on the seg- 

 ment preceding it ; antenuce-cases curved, longer than the leg-cases, white, 

 marked with black ; length, 1 3 mm. 



The beetle issued from the above pupa on the 21st of July, and was of 

 the variety termi)iale of Say. 



THYRIDOPTERYX EPHEMER(^EFORMIS, Haworth. 



BY FREDERICK CLARKSON, NEW YORK CITY, 



By the kindness of Mr. Donnelly, the very efficient head gardener of 

 the Central Park, of this city, I am put in possession of sixty cocoons of 

 the " Basket-worm." They were taken from the terminal twigs of a sap- 

 ling Sycamore Maple and Horse Chestnut growing on the low land in the 

 immediate vicinity of the zoological garden. The cocoons hung in clus- 

 ters on every twig, and as they had excited considerable curiosity, the 

 gardener permitted them to remain until about the period of egg-hatching. 

 I have supposed it might be of interest to the subscribers of the Canadian 

 Entomologist to have the result of my examination of these cocoons. 

 Ten of them had been occupied by the male, as attested by the puparium 

 within. In about an equal number I found the broken shell-case of the 

 female, all else having been devoured by parasites, some of which, in pupa 

 condition, were found within the cocoons. The remainder of the cocoons 



