PLA'l EXXXV 



->: 





(ill Dt 



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ft II II 



A '7 AN APPENI)I CULARIAN (FOLIA AETHIOPICA), FROM THE SARGASSO SEA, 

 AFTER LOHMANN. the mouth is to the left, the dark mass on the right is the 



OVARY.- THE NOTOCHORD RUNS DOWN THE MIDDLE OF THE TAIL. B.— PORTION OF A "SPECIMEN 

 OF Entry'/, is, SHOWING THREE SYSTEMS OF [ZOORDS. THE CENTRAL AI'ERTURE IN EACH SYSTEM IS 

 THAT OF THE. ATRIUM, THE SMALLER APERTURES SURROUNDING IT ARE THE MOUTHS. C. A 



COMPOUND INDIVIDUAL (GEMMARIUM) OF PYROSOMA. D.— OPEN END OF 

 SAME. E.— THREE ZOOIDS OF SAME ENLARGED, MOUTHS ABOVE, \IKI\I 

 APERTURE BELOW. F.— SALPA DEMOCRATICA, A SEXUAL INDIVIDUAL, the 



MOUTH IS TO THE LEFT. ATRIAL APERTURE TO THE RIGHT: THE OBLIQUE MND ACROSS THE 

 CAVITY IS THE " P.RANCHIA." 



