(100) 

 the presence or the abseuce of the lophor-horal or^ai.s, for these 

 orcaiis are pro^ei.t in spficin.ens -.vi th testea anci without ovaries 

 and abser.t in .-opecimei.a ■.vi tn cvari'io and witiiout testes. 



Duriiiij the latter part of Decemuer ana the first j,art of 

 January, 1 exaadnea speciiiiens of F. arciiitecta, soiiie of 



v/hich. v/ere coliectea in Beaufort Harbor at that tine anil some 

 o-f" which had been kept alive in the laboratory of Johns Hopkins 

 University since the sumnier months. 



Many of these speciTicna (50 or 40) were examined by crush- 

 ing the posterior eiid ana also by cuttin;^ sections, cnt with one 

 exception, all of these individuals were found to be v;ithout 

 ovaries anc. testes. In tie c^ise of the eyception, u fev ova- 

 rian eg^s were present but the ovaries v/ere still very younj^. 

 The blooa caeca at this time are surrounded by a great abunaaiice 

 of the peculiar peritoneal tissue v;hich later gives ri oe to th.e 

 reproductive organs. Lophophoral organs v/ere abse-t both in 



specimens collected at Eeaufoi^t aurin;^ tne first part o"'' January 



in 

 ana^specimens coliectea auring the summer and kept in tr^e labo- 

 ratory. 



During the rioi.ths of February, March and April, tne opec- 

 Jinens iri the a.iuaria at Johns Hopkii.s University were examinea 

 :uite frequently but until March or April, there was no si^n of 

 lophophora] organs. Then they began gradually to a-v^lc: in 



