42 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. IO3 



Plate 21 



115. Leptinotarsa decimlincala (Say), Chrysomelidae (larva), dorsal view of 



head Wiih part of integument removed to expose muscles. 



116. Same, ventral view of head with part of integument removed to expose 



muscles. 



117. Euparius marmoreiis (Oliv.), Platystomidae (adult), dorsal view of head 



with part of integument removed to expose muscles. 



118. Same, sagittal section of head slightly to the left of median plane. 



119. Same, ventral view of anterior portion of head with part of integument 



removed to expose muscles. 



120. Same (larva), dorsal view of head with part of integument removed to 



expose muscles. 



Plate 22 



121. Euparius marmoreus (Oliv.), Platystomidae (larva), sagittal section of 



head slightly to the left of median plane. 



122. Same, ventral view of head with part of integument removed to expose 



muscles. 



123. Pantomorus godmani (Crotch), Curculionidae (adult), sagittal section 



of head slightly to the left of median plane. 



124. Same, dorsal view of head with part of integument removed to expose 



muscles. 



125. Same, ventral view of anterior portion of head with part of integument 



removed to expose muscles. 



Plate 23 



126. Pantomorus leucoloma Boh., Curculionidae (larva), dorsal view of 



anterior region of head with part of integument removed to expose 

 muscles. 



127. Same, sagittal section of head slightly to the left of median plane. 



128. Same, ventral view of head with part of integument removed to expose 



muscles. 



129. Hylecoettis lugubris Say, Lymexylidae (adult), dorsal view of head 



with part of integument removed to expose muscles. 



Plate 24 



130. Hylecoctus lugubris Say, Lymexylidae (adult), sagittal section of head 



slightly to the left of median plane. 



131. Same, ventral view of head with part of integument removed to expose 



muscles. 



132. Same (larva), sagittal section of head slightly to the left of median plane. 



133. Same, dorsal view of anterior portion of head with part of integument 



removed to expose muscles. 



134. Same, ventral view of head with part of integument removed to expose 



muscles. 



