﻿148 



Journal New York Ent. Soc. 



[Vol. Ill 



warts is obsolete, represented in the Eucleid?e by a few weak setae. 

 The other two rows are functional and compose the armature of the 

 several species. The evolution is illustrated in the accompanying cut 



(figs. I to 7), which shows a series of segments advancing from the most 

 generalized type up to Sibine stbnulea. The thoracic warts are also de- 

 rived from the Microlepidopterous type; but are more modified. In 

 this type there are five warts formed from the primary and subprimary 

 tubercles '\a^\b, \\a^\\b, iii, iv+v and vi as shown in figures 9 {Swice- 

 this pariana) a.nd 10 {Ino pnini). In the Megalopygidae (fig. 11)" a 

 reduction has been effected in the lower row as on the abdomen (fig. 6). 

 In the Eucleidse, one more row is rudimentary on both thorax and abdo- 



men and the rudimentary subventral row of the Megalopygidce is lost. 

 Therefore there remain three well developed thoracic tubercles (see the 

 figures o( A. y-inversa Plate VI, fig. 8). These are all present in the 



