Manchester Memoirs, Vol. Ixii. (191 7), No. 4 



'9 



Genus and Species. 



Locality. 



Dorsal mes. 

 fils. present. 



Dorsal mes. 

 fils. absent. 



P. phosphorea, Linnseus. 



Naples. 



t 





P. RUBRA, Ellis. 



Naples. 



t 





*ACANTHOPTILUM AGASSIZII, 



Kolliker. 



off French Reef, 

 Gulf Stream. 





t 



*A. Pourtat.esii, Kolliker. 



off Carysfort Reef, 

 Gulf Stream. 





t 



*Leioptilum Grayi, Kolliker. 

 (=Sarcoptilis grandis, 

 Gray). 



probably Australia. 





t 



*L. (Ptilosarcus) Gurneyi, 

 Gray. 



California. 



t 





L. quadrangularis, Moroff. 

 *L. sinuosum, Kolliker. 



Hecate Strait, 

 Brit. Columbia. 



California. 



t 



undeter- 

 mined 



*L. undulatum, Verril. 



California. 





t 



Scytalium Balssii, Hickson. 



Timor, 



E. Ind. Arch. 





t 



Sc. Martensii, Kolliker. 



Timor. 





t 



Sc. Sarsii, Herklots. 



Java Sea. 





t 



*Sarcophyllum australe, 

 Kolliker. 



Australia. 





t 



Pteroeides argenteum, 

 Ellis and Solander. 



New Guinea. 





t 



Pt. caledonicum, Kolliker. 



Amboyna, 

 E. Ind. Arch. 





t 



Pt. griseum, Bohadsch. 



Naples 





t 



Pt. malayense, Hickson. 



E. Borneo Bank. 





t 



*Pt. pellucidum, Kolliker. 



Philippine Is. 



t 





Pt. speciosum, Kolliker. 



Molo Strait. 





t 



Pt. Steenstrupii, Kolliker. 



Tandjong Priok, 

 Java. 



t 





Ft. timorense, Hickson. 



S. coast Timor. 





t 



EXPLANATION OF ILLUSTRATIONS. 



Figure I. Siphonozooid of Pennatula phosphorea in longitudinal 

 section A, with stomodaeum whole; B, with stomo- 

 daeum bisected in dorso-ventral plane. 



Figure 11. Siphonozooids of Echinoptilum minimum in trans- 

 verse section, cut at three levels. A, section through 

 stomodaeum ; B, section below stodaeum ; C, section 

 near base of coelenteron. 



