NORTIE-ITALIAN BRYOZOA. 23 



Log. Val di Lonte {Rss. Sf Waters) ; Montecchio Maggiore ; 

 Brendola; Ferrara di Monte Ealdo. 



42. PORELLA lilBRICATA (RcUSS). (PI. III. figS. 16, 17.) 



Escliara imbricata, Eeuss. Foss. Polyp. Wien. Tert. p. 69, pi. •viii. 

 fig. 2Q. 



Zoariiim incrusting ; but, when completely covering the branch of 

 some other species, it at first appears to be free. In my specimens 

 it is difficult to see the structure of the younger zooecia ; but the 

 proximal edge is straight', with a small central avicularium within 

 the aperture ; this, however, is not visible in the older zooecia. In 

 the older zooecia the transverse shape of the aperture is very curious 

 and often triangular, caused by an infolding of the proximal edge. 

 The pores round the border are readily distinguished in some zooecia, 

 but not in all. Ovicell recumbent, distinct, not much raised, 

 punctured. 



Fig. 16 represents a rather abnormal zooecium, in which there are 

 large pores at the border. 



Loc. Yal di Lonte (Bss. Sf Waters) ; Brendola ; Montecchio 

 Maggiore. 



43. PoRELLA MARSTJPiuir, MacG., var. porifera, Hincks. (PI. III. 



fig. 13.) 



Porella marsupium^ MacGr., var. jporifera, Hincks, Ann. Mag. 

 Nat. Hist. ser. 5, vol. xiii. p. 24, pi. iv. fig. 4 ; Waters, Quart. 

 Journ. Geol. Soc. vol. xliii. p. 63. 



Fossils from Brendola have the central avicularium somewhat 

 lower than in Hincks's figure. The two "pores" at the side are 

 the ends of tubes ; and in a few instances these only are visible, 

 and the central avicularium is sometimes wanting. The ovicell is 

 small and somewhat immersed. The preservation of this species is 

 not good ; but I feel little doubt that, even if not quite identical 

 with the var. porifera, it is closely allied. 



Loc. Living : Yictoria ; Bass's Straits ; Queen Charlotte Island. 

 Fossil : Waipukerau ; Napier (New Zealand) ; Brendola ; Ferrara 

 di Monte Baldo. 



44. Ehamphostoiiella brexdolensis, sp. nov. (PI. III. figs. 10, 11.) 



Zoarium incrusting. Zooecia distinct, oval to hexagonal ; surface 

 smooth, with large pores round the edge ; peristome raised, with a 

 peristomial notch either central or slightly to one side ; on one 

 side of the peristome a small triangular avicularium and in some 

 parts of the zoarium also large elliptical avicularia on one side of 

 the zooecium, directed laterally. Sometimes the zooecia are separated 

 by a wall which is considerably raised vertically, and in some cases 

 the subradiate lines on the surface are very distinct. Within the 

 peristome there is an expanding lyrula ; but the cardellee are in- 

 distinct. Ovicells wide, raised or partly immersed, widely open in 

 front, apparently not perforated. 



