PLATE VI. 



Figs. 1-3. Molgula pyriformis, Herdman. 

 Figs. 4-9. Eagyra kerguelenensis, Herdman. 



Fig. 1. Molgula pyriformis, from the left side ; natural size. 



Fig. 2. Part of the branchial sac, seen from the inside, showing two of the branchial folds, 



and an interspace ; magnified (Hartn., obj. 4). 

 Fig. 3. The peritubercular area and dorsal tubercle ; magnified (Hartn., obj. 4). 

 Fig. 4. Eugyra kerguelenensis, from the right side ; natural size. 

 Fig. 5. Another specimen of the same species, from the right side ; natural size. 

 Fig. 6. Part of the tentacular circlet, magnified, showing the different orders of tentacles 



(Hartn., obj. 4). 

 Fig. 7. Portion of one of the branched tentacles, to show the loose membrane (tn.m.) 



upon the posterior surface ; much magnified (Hartn., obj. 5). 

 Fig. 8. Part of the branchial sac of Eugyra kerguelenensis, from the inside, showing a 



complete mesh and an infundibulum ; magnified (Hartn., obj. 4). 



Fig. 9. The peritubercular area and dorsal tubercle of Eugyra kerguelenensis, showing 



the simple quadrangular aperture of the duct, from the inside ; magnified 

 (Hartn., obj. 4). 



