56 



MR. A. W. WATERS ON TERTIARY CHILOSTOMATOUS 



33. Mucronella pr-estans, Hincks. 



Mueronella prcestans, Hincks, Ann. & Mag. Nat. Hist. ser. 5, 

 vol. x. p. 99, pi. vii. fig. 1. 



Mueronella duplicate/,, Waters, Quart. Journ. Geol. Soc. vol. xxxvii. 

 p. 328, pi. xvi. fig. 54, and vol. xxxviii. p. 266. 



The fossils from Waipukurau are surrounded with large pores, as 

 in the Curdies-Creek specimen, and some cells have similar avicu- 

 laria, but they do not occur in all. My M. eluplieata was described 

 from a fragment of only a few cells, and although I also referred to 

 a recent specimen sent over by Mr. Hutton as Lepralia variolosa, 

 and gave particulars, it may, perhaps, be best to break the rule 

 concerning priority and adopt Mr. Hincks's name. 



This is allied to M . coccinea, but differs in the larger ovicell, which 

 is not recumbent. 



Loe. Living : New Zealand. Fossil : Curdies Creek (S.W.. 

 Victoria) ; Mt. Gambier in Vincularia-st&ge ; Waipukurau, Petane 

 marls. 



34. Mucronella Peachti, Johnst. 



This occurs fossil from Napier and probably the other localities ; 

 but in the fossils it is very difficult to always distinguish between 

 this and the following variety, which is common. 



35. Mucronella Peachii, var. octodentata, Hincks. 



Mueronella Peachii, var. j3. octoclentata, Hincks, Brit. Mar. Polyzoa, 

 p. 361, pi. li. fig. 2. ' 



Mueronella teres, Hincks, Ann. & Mag. Nat. Hist. ser. 5, vol. viii. 

 p. 65, pi. ii. fig. 5. 



Mueronella spinosissima, Hincks, loe. eh. pi. iii. fig. 2. 



? Mueronella ventricosa, var. multispinata, Busk, ' Challenger ' 

 Beport on the Polyzoa, p. 160, pi. xxii. fig. 11. 



? Mueronella Icevis, MacGillivray, Trans. Boy. Soc. Yictoria, 

 vol. xix. p. 136, pi. iii. fig. 16. 



Lepralia arrecta, Bss. Bry. (Est. Ung. Mioc. p. 24, pi. ii. fig. 11. 



This is a common fossil from Waipukurau. The zoarium is adnate, 

 with distinct, raised, ovate, smooth zooecia ; peristome raised all 

 round, with about eight spines on the upper part, and a broad flat 

 denticle in the oral aperture directed downwards (towards the 

 neural wall) ; this denticle closes about one third of the aperture. 

 Usually a row of pores round the border of the zocecium. Ovicell 

 small, globular, smooth, recumbent. 



Perhaps this should be called M. Grotriana, Stol. (see Beuss, 

 Fauna Sept. p. 57, pi. vii. fig. 1 ; Denkschr. Ak. Wissensch. vol. xxv. 

 p. 173, pi. vii. fig. 1), which only differs in the absence of spines. 

 L. Homesi, Beuss, is also closely allied. 



Loe. Living : Shetland (A. M. iV.) ; Capri (A. W. W.) ; Curtis 

 Island {H.) ; Station 148, and Prince Edward's Island, 80-120 

 fath. (B.) ; New Zealand species sent by Miss Jelly. Fossil : Wai- 

 pukurau, Trig's Station (Tanner's Bun), and Napier (N. Zealand). 



