FAMILY MICROPORID.'E. 

 TlIAIROPORA, McG. 



T. Woodsii, McG. Glenelg. 



7\ Jervoisii, Hincks, sp. St. Vincent's Gulf. 



T. WhiffeUi, n. sp. ; tig. 2. Zoarium very narrow, linear^ 

 adnata. Zooecia in regular transverse series, elongated, quadrate, 

 separated by distinct thickened margins, membrano-calcareous in 

 front, with a large transverse bullate enlargement immediately 

 below the mouth ; mouth rounded above, sliglitly narrowed below, 

 a small mamilliform process on one or both sides. 



I have much pleasure in associating Dr. Whittell's name with 

 this elegant species. Its generic position may be somewhat 

 doubtful, but its characters agree on the whole with those of the 

 other species of lliairopora, from which it chiefly differs in the 

 large bullate enlargement below the mouth. In the youngest 

 zofecia this part of the cell is marked off" by a ffne transverse 

 ridge, between Avhich and the mouth the enlargement becomes, 

 developed. It has no connnunicaiton with the main body of the 

 zofecium. The transverse arrangement of the zooecia occurs also 

 in T. dispcw and T. Woodsii. The mouth is placed on a some- 

 what lower level, and slopes slightly backwards. I have only 

 seen the specimen ffgured, and an examination of others would 

 be desirable. 



FAMILY CRIBRILINID.E. 

 Cribrilixa, Gray. 



C. mo7ioceros, Busk. Hi. Vincent's Gulf. 



FAMILY MICROPORELLIDyE. 

 Adeoxa, Lamx. 



A. foliacea, Lamx. 



A. cellulosa, McG. 



A. grisea, Lamx. 



Adeonellopsis, JIcO. 



A. foliacea, McG. Encounter Bay. 



A. Zietzii, n. sp. ; fig. 3. Zoarium encrusting. Zotecia irregu- 

 larly arranged, ovate, distinct ; mouth subcircular with the lower 

 lip hollowed, or semicircular with the lower lip nearly straight ; 

 surface tubercular and perforated, usually a large nodular mass- 

 below the mouth, and occasionally others similar at the sides ;. 

 zooecial pore subcentral, entire, or stellate. Ooecial cells large^ 

 surface with large nodosities I'ound the margins, especially above, 

 pores usually two or three, stellate, in a central depression ; 

 mouth wide, arched above, straight and projecting forwards- 

 below. St. Vincent's Gulf. 



