54 



ME. A. W. WATEES ON TEETIAET CHILOSTOSIATOUS 



directed towards the centre of the zocecium. This form is the 

 M. calabra of Seguenza. 



The specimen from Waipukurau has rather smaller zocecia than 

 the others, but the oral aperture of all is about 0-1 mm. wide. 



Loc. Living : Cosmopolitan. Fossil : Miocene, Austria and Hun- 

 gary ; Pliocene, Italy and Sicily, English Crag, Mount Gambier 

 (Australia), Napier, "Waipukurau, and Trig's Station (New Zealand). 



27. MiCEoroEELLA Maltjsii, Aud. 



Microporella Malusii, Aud., Waters, Q. J. Geol. Soc. vol. xxxix. 

 p. 437. 



Loc. Living : European seas, S. America, N. Zealand, Australia. 

 Fossil : English Crag, and Pliocene of Italy, Bird Eock (Victoria), 

 Napier, Petane (N. Zealand). 



28. Miceopoeella (?) macropoea, Stol. 



Lepralia macropora, Stoliczka, Olig. Bry. von Latdorf, p. 84, pi. ii. 

 fig. 3; Sitz. Ak. Wien, Math.-nat. CI. Bd. xlv. Abth. i. 1862. 



Escharipora stellata, Smitt, Floridan Bryozoa, p. 26, pi, vi. 

 figs. 130-133. 



Microporella macropora, Waters, Quart. Journ. Geol. Soc. 

 vol. xxxviii. p. 267, pi. viii. fig. 18. 



Microporella stellata, MacGillivray, " New or Little-known 

 Polyz." pt. 2, Tr. Boy. Soc. Vict, vol. xix. p. 131, pi. i. fig. 4. 



The fossil from Waipukurau has an avicularium at each side of 

 the aperture, and should, as I have before pointed out, perhaps be 

 called var. biarmata on that account : and I have again to repeat 

 that although no suboral pore is known, the general characters are 

 those of Microporella, the genus in which Professor MacGillivray 

 has also placed it. 



Loc. Living: Port Phillip Heads (MacG.); Port Phillip ( W.) ; 

 Florida (Sm.). Fossil : Miocene, Latdorf (with one avicularium) ; 

 Waipukurau. 



29. Mtceopoeella decoeata, Ess., var. angustipoea, Hincks. 



Microporella diadema, MacG., form angustipora, Hincks, Ann. 

 & Mag. Nat. Hist. ser. 5, vol. xv. p. 249, pi. viii. fig. 3. 



MacGillivray and Hincks have made several varieties of M. dia- 

 dema ; but it seems to me that they should be called varieties of 

 M. decorata, Ess. In the typical M. decorata the avicularium is 

 directed directly distally, and in the recent forms there is consider- 

 able variation, as, for example, between var. lata and var. lunipuncta, 

 MacG. 



In a fossil specimen of the typical M. decorata, from Vigna di 

 Mare, near Eeggio, Calabria, the shape of the ovicell is the same as in 

 var. diadema and lunipuncta, and, so far as the state of preservation 

 allows of comparison, the other characters are the same. 



It seems to me that we should divide this group into M. decorata, 

 Ess., typica ; var. diadema, MacG. ; var. angustipora, Hincks ; var. 



