no.1658. ILCYONARIA OF THE CALIFORNIAN COAST VDTTING. 727 



I'l ATI \< '. 



Fig. l. Spicules of Telesto ambigua, new species. 

 :!. Spicules of Anthomastus ritieri, new species. 

 3. Spicules of Plumarella longispina. 



1. Spicules Hi" Psammogorgia simpl <. new species. 

 5. Spicules ni Psammogorgia torreyi, new species. 

 G. Spicules of Stenogorgia hofoidi, new Bpecies. 



7. Spicules of Psammogorgia spavMingi, new species. 



Plate XCI. 

 Strud ur;il a i nl histological details of Ptilosarcus quadrangularis. 



Fig. 1. Cross section of wall nl radii-, llinmu'li tin- hand ui /.ooids. 



c, canal lrmn gullel of zooid to large Longitudinal canal of rachie 



c in, circular muscles Lining ca > it y of rachis. 



ect, ectodermal lining of oesophageal tube or gullel of zooid (siphonoglyph 



showing Long cilia. 

 end, endodermal Layer of gullel wall. 



(/nl, gullet of zimiil in horizontal section taken across the siphonoglyph. 

 iin , Involution of surface of zooid ha ml. 

 I c, cavity of great Longitudinal canals of rachis. 

 / in b, Longitudinal muscle hands, in section. 

 m, mouth of zooid. 

 sp, spicules, in cross seel ion. 

 sp I, Bpongy tissue below muscle hands. 



2. Cross seci inn of zooid, taken across gullet. 

 ect, ectodermal lining of Biphonoglyph. 



end, endodermal lining of intermesenterial chamber. 



i c, intermesenterial chamber. 



//(, mesenterj . 



spgh, ca\ ity of siphonoglyph lined with long cilia. 



