METAZOA INSECTA. 439 



the crevices of the bark or on the ground and transforms 

 to a pupa (fig. 4) which in a shorter or longer time, ac- 

 cording to whether the month is July or October, devel- 

 ops into the beetle (No. 1102; PI. 1101, fig. 5). There 

 may be two and possibly three broods in a season and as 

 both larva and adult feed upon the elm great injury is 

 done. 



Still more striking is the caterpillar-like larva of Haltica 

 chalybea 111. (PL 1103, fig. i), the adult (fig. 2) of which 

 is the small shining blue or sometimes greenish beetle 

 found on grape vines in early spring. 



The caterpillar-like larvae of beetles may be hairy in 

 some species and naked in others. An illustration of the 

 former is found in the carpet beetle, Anthrenus scrophu- 

 lariae Fabr. (No. 1104; PL 1105, fig. i), of which, al- 

 though its shape is unlike that of a caterpillar, the feet 

 are small and hidden from a dorsal view. This being the 

 case, it resembles more closely a hairy caterpillar than a 

 Thysanuriform larva or a typical Coleopterous grub. It 

 is this larva which does most of the damage to carpets 

 and woolen goods. The larval skin serves as a case for 

 the pupa (fig. 2, dorsal view with the larval skin split 

 down the back; fig. 3, the pupa removed from skin). If 

 the pupa transforms normally, its skin splits lengthwise 

 and it crawls out leaving the two skins. 



The wing covers of the beetle are provided with scales 

 of different colors, black, brick- red, and white (No. 1106). 

 The beetles (No. 1106 ; PL 1105, fig. 4) leave our houses 

 and feed upon the blossoms of rhubarb ; they are espe- 

 cially fond of single tulips, particularly the yellow shades. 1 

 Unfortunately for us, the beetles return to our houses and 

 lay their eggs upon the food which their young love best. 



The larvae of some species of the family Dermestidae 

 have a brush of long hairs at the end of the body (PL 



1 I3th Rep. State Ent., N. Y. State Mus., 1897, p. 359. This 

 pamphlet is reprinted from the 5ist Ann. Rep. N. Y. State Mus., I. 



