PLATE 3 



EXPLANATION OF FIGQRES 



42 to 44 Endoskeleton of the head, dorsal wall of the head capsule, append- 

 ages, and soft internal tissues removed. 



45 to 53 Endoskeleton of the head in median longitudinal section, soft internal 

 tissues removed. 



54 to 69 Antacoria, antennaria, and proximal segments of the antennae. 



42 Anisolabis maritima. 



43 Stenopelmatus sp. 



44 Orchelimum vulgare. 



45 Blatta orien talis. 



46 Mantis religiosa. 



47 Gryllus pennsylvanicus. 



48 Stenopelmatus sp. 



49 Melanoplus differentialis. 



50 Orchelimum vulgare. 



51 Diapheromera femorata. 



52 Tettix arenosus. 



53 Anisolabis maritima. 



54 Blatta orientalis, female, cephalic aspect. 



55 Blatta orientalis, female, caudal aspect. 



56 Blatta orientalis, male, cephalic aspect. 



57 Mantis religiosa, cephalic aspect. 



58 Mantis religiosa, caudal aspect. 



59 Gryllus pennsylvanicus, cephalic aspect. 



60 Gryllus pennsylvanicus, caudal aspect. 



61 Anisolabis maritima, cephalic aspect. 



62 Orchelimum vulgare, cephalic aspect. 



63 Stenopelmatus sp., cephalic aspect. 



64 Stenopelmatus sp., antennaria. antenna removed. 



65 Orchelimum vulgare, antartis and antatendon. 



66 Diapheromera femorata, portion of head capsule with proximal sejrments 

 of antenna. 



67 Melanoplus differentialis, ental aspect of antacoria. 



68 Melanoplus differentialis, cephalic aspect. 



69 Tettix arenosus, cephalic aspect. 



294 



