140 MORPHOLOGY OF INVERTEBRATE TYPES 



the inner flagellum and the outer flagellum with chemical setae 

 (both flagella many-jointed). 



9. Make a drawing of the second antenna showing the two- 

 jointed protopodite, the scale-like exopodite and the two-jointed 

 endopodite with a many-jointed flagellum; on the first joint of the 

 protopodite show the opening of the green gland. 



10. Make a drawing of the mandible showing the protopodite 

 with the grinding edge, the three-jointed palpus which represents 

 the endopodite, the heavy adductor muscle attached by means of 

 a long tendon to the inner edge of the protopodite and the abduc- 

 tor muscle attached by a small tendon to the outer edge of the 

 joint. 



11. Make a drawing of the first maxilla showing the two- 

 jointed protopodite, both joints modified as maxillary plates, 

 and the endopodite. 



12. Make a drawing of the second maxilla showing the two- 

 jointed protopodite, each joint modified as a maxillary plate and 

 subdivided; the rudimentary endopodite; the scaphognathite or 

 " bailer" which drives the water out of the branchial cavity. 

 The anterior portion of the scaphognathite represents the 

 exopodite, the posterior one the epipodite. 



13. Make a drawing of the first maxilliped showing the two- 

 jointed protopodite, both joints modified as maxillary plates, 

 endopodite, exopodite with many-jointed flagellum and the large 

 epipodite with the fold or trough at its outer edge for the bailer or 

 fan. 



14. Make a drawing of the second maxilliped showing the two- 

 jointed protopodite, the four-jointed endopodite, the exopodite 

 with the many-jointed flagellum, the epipodite and the rudimen- 

 tary gill or podobranchia. The second joint of the protopodite 

 shows a groove subdividing it into two not yet quite distinct 

 joints. Label first joint of protopodite as coxopodite, second as 

 baso-ischiopodite, first joint of endopodite as meropodite, next as 

 carpopodite, propodite, and dactylopodite. 



15. Make a drawing of third maxilliped showing the two- 



