I :^o A}inals E)itonwlogical Society of America [Vol. Ill, 



Lasiocampidae. 



Fig. 59 and HO .\iitcnna, and front and labrum of Malacosoma disstria. 



("eratocampidae. 



Fig. G1. Head of Hasilona imperialis. 

 Fig. 02. Labrum of Anisota scnatoria. 

 I'-ic. iV.^ Labrum of ("itheronia regalis. 



PLATF XV. 



Fig. 04. Htad <it Anisota scnatoria. 

 Fig. 05. Labrum of Ba.silona impcralis. 



Saturn II dak. 



Fig. 00. Head of Hyj)er(.hiria io. 



Fig. 07. AUixillae and labrum of a half j^rown larva, supposed to be H. io. 



Fig. 08. Maxillae and labium of adult larve of H. io. 



Fig. 09. Labrum of Telea ])olyi)hcmus. That of normal Tropaca luna is similar, 



but lacks the sect)ndary hair. 

 Fig. 70. >hixilhK' and labium of T. })oly])hcmus. 

 Fig. 71. Labrum of Tropaca lima. An aberration, aj.iparently due to injury 



and im{)erfcct regeneration. The fomi is changed, and setae Hi, 



iv and vi are lost on the right side. 

 Fig. 72. Head of Tropaea luna. That of polyj^hemus is similar. 



NOTODONTIDAE. 



Fig. 7;^. Front and labrum of Datana integerrima. 



Fig. 74. Front and labrum of Schizura concinna. That of S. badia is quite 



similar. 

 Fig. 75. Front and labrum of Certira, i)cnultimate stage. 



PL ATI-: XVI. 



Fig. 70. Head of iMclalojjha. 



Fig. 77. \'cntral proleg of I'erura, extended. 



Fig. 78. Anal leg of Datana ministra, penultimate stage, seen from the ventro- 

 lateral point of view. 



Fig. 79. Lateral view of stemapod, or ana! proleg of ('crura, with the tip of the 

 body. 



Fig. 80. Nearly lateral view of anal proleg of Heterocampa guttivitta ; about half 

 of the row of crotchets is shown. 



Fig. 81. Ventral proleg of the same, half retracted; extended it would resemble 

 Figure 77 quite closely. 



Fig. 8'J. Labrum of H. guttivitta. Nadata is quite similar. 



Fig. 83. Labrum of Mclalopha. 



Geometridae. 



Fig. 84. Head of Lycia cognataria (?). 



Fig. 85. Lateral view of sixth abdominal segment of the .same, showing normal 



ICnnomid position of the proleg, and seta vib. 

 Fig. 80. Labrum of the same. 

 Fig. 87. Ventral view of proleg of Zerene catenaria, opened on the outer side 



and flattened, to show the sucker, interrupting the row of hooks. 



TnVATIRIOAE. 



Fig. 88. Heax of (."ymatoi)hora (Hombycia) or. Sketch to show form of 

 epicrania. 



Drhpanidae 



Fig. 89. Front view of head of Drepana arcuata. 



Fig. 90. Seta plan of the siime. The leg is indicated very diagrammatically. 



Fig. 91. LaVirum of the same. 



Fig. 92. Lateral view of ventral proleg, showing the three true setae vii, the 



outer row of rudimentary hooks, and the two ends of the developed 



inner row. 



