58 



MB. A. W. WATEES ON TEETIAEY CHILOSTOMATOTJS 



and raised, and below this large pores on the surface of the zooecia. 

 There is a raised suboral avicularium directed laterally, and some- 

 times also a small round avicularium at the side of the aperture. 

 Ovicell almost concealed in the zooecium above. The oral aperture 

 is about 0'16 mm., whereas in recent specimens of M. porosa from 

 Port Phillip it is 0-33 mm. 



40. MlJCEONELLA (?) LlVEESIDGEI, T.-Woods. 



Eschara Liver sidgei, T.-Woods, Some Tert. Australian Polyzoa, 

 Poy. Soc. of N.S.W. 1876, p. 3, figs, xi., xii., xiii. 



A fossil from Waipukurau has the proximal edge of the aperture 

 nearly straight, the distal rounded, and a little distance down the 

 aperture there is a semicircular ridge which almost divides it into 

 two parts. This, I believe, is the lower edge of the concealed 

 ovicell, as we sometimes see it in Cellaria. 



Just below the oral aperture there is a much raised protuberance, 

 and on each side of this a large semicircular pore ; below the pro- 

 tuberance there is a large round pore, below which, again, there is 

 usually a small one, which may be elongate. 



Loc. Fossil: Mount Gambier (Woods), Waipukurau. 



41. Mfceonella eiemata, sp. nov. (PI. YII. fig. 20.) 



Zoarium adnate. Zooecia broadly ovate, distinct, raised, coarsely 

 punctured over the entire surface. Orifice almost semicircular, with 

 a square tooth on the lower margin ; peristome forming a broad 

 thickened border round the upper part of the orifice, and thickened 

 at each side near the base. 



This differs from Phylactella labrosa, B., in having no raised 

 peristome below the mouth. 



Loc. Fossil : Napier and Waipukurau. 



42. Smittia eetictj lata , MacG. 



A badly-preserved Smittia from Whakati seems to be S. reticulata. 



43. Smittia Landsboeovii, Johnst. 



Lepralia Landsborovii, Johnst. Brit. Zooph. ed. 2, p. 310, pi. liv. 

 fig. 9. 



Loc. Living : Arctic and British seas, Mediterranean, Australia. 

 Possil : Eiver Murray Cliffs (Australia) ; Petane (New Zealand). 



44. Smittia biinctsa, Waters, var. bicuspis, Hincks. 



Mucronella bicuspis, Hincks, Ann. & Mag. Nat. Hist. ser. 5, 

 vol. xi. p. 110, pi. vii. fig. 2. 



The fossil from Mount Gambier (Quart. Journ. Geol. Soc. xxxviii. 

 p. 272, pi. vii. fig. 1) has the avicularia more raised and has more 

 large pores ; but I have a recent specimen from New Zealand with 

 more pores than Mr. Hincks figured, and with the avicularia more 

 raised. The denticle ranges from being deeply cleft to being 

 expanded and nearly flat at the tip. 



In the important characters the two are unmistakably allied, 



