FIG. 



A. Mouth-parts of a tick (one of the Ixodidse). From 

 a Specimen, seen from the ventral aspect. 



i and 2. The capitulum or " false head " from beneath. The transverse line between 

 i and 2 does not seem to have any significance. 



3. The fixing hypostome with recurved tee,th, a median process from behind 



the mouth-opening. 



4. The cutting chelicera, with curious out-turned teeth at the tip. The 



chelicera is sometimes called the mandible. 



5. The blade of the chelicera. 



6. The pedipalp or palp. I.-IV. Its four joints. When the pedipalps are 



apposed, a groove on their inner aspect receives the chelicerae and 

 hypostome. 



