THE EXOOOXE/E. 



243 



EXPLANATION OF THE PLATES. 





Lettering. 





ac. 



aciculum. 



ne. 



nephridium. 



an.c. 



anal cirrus. 



n.p. 



nephridioporfl. 



a.p.rj. 



anterior pro-ventricular glands. 



or. 



ovum. 



b. 



rbabdite glands. 



P- 



pharynx. 



c. 



casca. 



P-'.l- 



pharyngeal glands. 



o-f. 



ciliated funnel. 



p.p. 



pharyngeal papilla?. 



C.I/. 



ciliated groove. 



/>■>'■ 



proctodeum. 



cm. 



circular muscles. 



pr.m. 



protractor muscles of proboscis 



at. 



cuticle. 



p.v. 



proventriculus. 



(I.e. 



dorsal cirri. 



r.m.c. 



radial muscle-columns. 



d.p.g. 



dorsal pedal gland. 



so. 



somites. 



d.pl. 



dorsal plate of embryo. 



s.s. 



setigerous sac. 



cp. 



epitbelium. 



St. 



stomodajum. 



f. 



funnel. 



t. 



pharyngeal tooth. 



g.b. 



germinal bands. 



v.c. 



ventral cirrus. 



i. 



intestine. 



V.p.ff. 



ventral pedal gland. 



i.gl. 



integumentary glands. 



V.V. 



ventral vessel. 



It. c. 



ventral nerve-cord. 



!/■ 



yellow gland. 



All the figures from drawings by the author. 



Fig. 1. 



5. 



E. fustifera. 



6. 



E. fustifera. 



7 



E. verrugera. 



8. 



E. verrugera. 



9. 



E. verrugera. 



Plate 17. 

 Exogone fustifera. Anterior region, dorsal view, magnified, with outline of 



alimentary canal, etc. 

 E. fustifera. Dorsal view of parapodium. xl040. 

 E. fustifera. Samples of compound setae. 

 E. fustifera. Most dorsal seta, ordinaiy form. 



Most dorsal seta, form with appendage. 

 Most ventral seta, strongly bidentate form. X 1040. 

 Anterior region. 

 Second compound seta. X 1040. 

 Most ventral, simple seta, x 1040. 

 Figs. 10rt & 104. E. verrugera. End of aciculum. X 1040. 

 Fig. 11. E. lieterosetosa. Headend. X 440. 

 Eig. 12. E. lieterosetosa. Most dorsal, simple seta, x 1040. 



Eigs. 13 & 14. E. lieterosetosa. First (most dorsal) compound seta, two varieties. 

 Eigs. 15, 16, 17. E. lieterosetosa. Ordinary compound seta. 

 Fig. 18. Grubea kerguelensis. Anterior end. X 440, 



19. G. kerguelensis. Most dorsal, simple seta, x 1040. 

 U0. G. 1,-ert/uelensis. Compound seta. 

 21. G. quadrioculata. Anterior region, x 440. 

 Figs. 22 & 23. G. quadrioculata. End of aciculum. 

 Figs. 24 & 25. 07. quadrioculata. Compound setae. 



Fig. 20. G. quadrioculata. Parapodium and cirri, ventral view, x 440. All the compound 

 setse are not represented. 

 27. G. pusilloides. Dorsal view of anterior region, x 300. Only one of the two 

 rhabdite glands in each parapodium is represented. 

 G. pusilloides. Parapodium from the dorsal side, x 1040. 

 Section of one of the groups of granule-producing glands of E. fustifera. x 800, 



28. 

 29. 



