DIASTOPORID^. 27 



ventricosa in my possession all exhibit very similar characters ; and 

 all are apparently of fully mature growth, as evidenced by the 

 large oooecial inflation. I have therefore little doubt of its specific 

 distinction. That it has no relation to Proboscina Lamourouxii of 

 Audouin (' Egypte,' pi. vi. figs. 5, 5- s) is obvious at first sight, 

 from the existence on the latter of distinct globose oocecia, those 

 organs in T, ventricosa, as in the other Tubuliporidse, being repre- 

 sented by the ventricose inflation of the polyzoarium. 



6. Tuhulipora pyriformis, n. sp. 



Zoarium closely adnate, pyriform ; cells much immersed, coarse, 

 short, very irregularly disposed. 



Hab. Tasmania, on Fucus {Mrs. St)iith). 



Other species noticed by Authors. 



7. Tuhulipora organizans, D'Orb. 

 " T. tubuUs trifascicularibus."' 



Tiibulipora organizans, D'Orb. V. d. rAmer. MSrid. p. 19, pi. 9. figs. 1, 3. 

 Hab. Falkland Islands. 



8. Tuhulipora (Proboscina) dichotoma, D'Orb. 



" C. ramosa, dichotoma, reptans ; ceUulis tubulosis, erectis, punc- 

 tatis." 



Tubidipora (Proboscina) dichotoma, D'Orb. ib. p. 19, pi. 9. figs. 7-31. 



Hab. Falkland Islands. 



9. Tuhulipora (Proboscina) malaccensis, D'Orb. 



"Branches Uke those oi P. Jimbriaf a , but half as large again, 

 with numerous projecting cells."' 



Proboscina malaccensis, D'Orb. Pel. Frang. p. 847. 



Hab. Straits of Malacca. 



Family IV. DIASTOPORIDJE, Bk. 



Zoarium crustaceous or foliaceous, discoid or indefinite in outline, 

 adnate and sessile or pedunculate, or erect ; no canceUi. 



Diastoporidae (pars), £k. Crag Polyz. p. 113 : Smitt. 



c 2 



