PLATE 7 



EXPLANATION OF FIGURES 



136 and 137 Anisolabis maritima, labium. 136, ventral aspect; 137, dorsal 

 aspect with the hypopharynx turned over to show its ventral aspect. 



138 Anisolabis maritima, mouth-parts dissected out and prepharynx flat- 

 tened out to show its parts. 



139 Gryllus pennsylvanicus, sagittal section of head showing prepharynx. 



140 Orchelimum vulgare, sagittal section of head showing prepharynx. 



141 Mantis religiosa, mouth-parts dissected out showing lateral aspect of 

 prepharynx. 



142 Diapheromera femorata, sagittal section of head showing prepharynx. 



143 Anisolabis maritima, sagittal section of head showing prepharynx. 



144 Stenopelmatus sp., sagittal section of head showing prepharynx. 



145 Tettix arenosus, mouth parts dissected out showing lateral aspect of 

 prepharynx. 



146 Anisolabis maritima, part of salivia near salivos showing the fusion to 

 mesarima of labium. 



147 Anisolabis maritima, lateral aspect of hypopharynx. 



148 and 149 Gryllus pennsylvanicus, dorsal and lateral aspect of parapharynx. 

 150 Stenopelmatus sp., lateral aspect of parapharynx. 



302 



