PLATE VIII. ; 



Fig. 3. — Caudal view of the head as it appears when first removed from the body. ; 



Pig. 4. — Caudal view of the head with the muscles removed to show chitinous 



structures. - 



Fig. 5. — Caudal view of the head with muscles and chitin removed to show the j 



mandibles and maxillte. A mandible with its attachments is shown ' 

 on the left and a maxilla on the right. 



Fig. 6. — Tips of mandibles and maxillaj. | 



