318 GRISMOLOGY. 



b. UPPER JAWS (Mandibulae}. 



1. CHELATE (CJielata). When the upper jaws are fur- 



nished at the end with a chela or thumb. Ex. 

 Scorpio, Phalangium. 



2. UNGUICULATE ( Unguiwlattz ). When they are 



armed with a mcweable daw. Ex. Araneidea. 

 PLATE VII. FIG. 10. c f . 



3. BURIED (Sepnltte). When they are covered and 



quite concealed by the upper lip. Ex. Colliuris. 

 4<. OPEN (Apertce). When they are not quite concealed 

 by the upper lip. Ex. Most Coleoptera. 



5. TOOTHLESS (Edentulce}. When they are not armed 



with teeth. Ex. Apogonia gemellata. PLATE 

 XXVI. FIG. 22. 



6. TOOTHED (Dentate?}. When they are armed with 



teeth. Ex. Cicindela. PLATE XXVI. FIG. 19. 



7. SUCTORIOUS (Suctorice}. When they have an ori- 



fice by which they imbibe their food. Ex. Larva 

 of Dijtiscus, Myrmeleon, &c. PLATE XIII. FIG. 6. 



c. UNDER JAWS (Maxillce}. 



1. SIMPLE (Splices). When the under jaws have but 



one lobe. Ex. Hymenoptera. PLATE VII. FIG. 2, 

 3. d f . 



2. COMPOUND (Composites). When they have more 



than one lobe. Ex. Staphylinus and many other 

 Coleoptera. PLATE XXVI. FIG. 9, 10. d'". e'". 



3. ADNATE (Adnatte). When they adhere to the lower 



lip through their whole length. Ex. Triclioptcra. 

 PLATE VII. FIG. 1. d'. 



4. ADHERENT (Ad/i<zrentes). When they adhere to it 



