6 Pratt, Marine Fauna of the Falkland Islands. 



1 . Cellepora pus tula ta. 



2. Lepralia adpressa. 



3. Membranipora membranacea. 



4. Smittia landsborovii. 



5. Micropora uncifera. 



6. Microporella ciliata. The variety personata was 



recorded by Darwin from the Falklands, but not 

 the true species. 

 Of 16 species of Bryozoa in this collection, eight have 

 been found only in the southern hemisphere. Five have 

 been found in the north and south temperate regions. 

 One occurs in the north and south temperate regions and 

 in the tropics, and two are cosmopolitan. 



Notes on the Species of Bryozoa in this collection. 



The zocecia of Microporella ciliata seem larger than 

 those of the British specimens. In structure I think they 

 more closely resemble those of the Californian specimens. 



Lepralia adpressa var. Busk. The surface of the 

 zooecium is strongly grooved, as described by Busk of 

 the species occurring at Chiloe {see Busk, Brit. Mus. Cat., 

 Vol. II., p. 82), but there are, in addition, certain large 

 pores which occur round the margin of each zooecium, at 

 the base of each triangular furrow {see Figs, i and 2). 

 These pores I have also seen in Busk's "Chiloe" 

 specimen at the British Museum, but they are neither 

 so numerous nor so well marked as in my specimen. 



Avicularia {Fig. 3) of two kinds occur, which have 

 not hitherto been described ; one appears to be the 

 ordinary beak-like form, but is often slightly irregular in 

 shape (Fig. 3, a and b) ; the other is circular in outline, 

 with a spatulate mandible {Fig. 3, c and d). The avicu- 

 laria are very irregularly distributed over a colony ; 

 sometimes five or six neighbouring zooecia possess one 



