POLYZOA (BRYOZOA) 



I. SCRUPOCELLARIIDAE, EPISTOMIIDAE, FARCIMINARI1DAE, 

 BICELLARIELLIDAE, AETEIDAE, SCRUPARIIDAE 



By Anna B. Hastings, M.A., Ph.D. 



British Museum (Natural History) 



(Plates V-XIII ; Text-figs. 1-66) 



INTRODUCTION 



In the course of the Discovery Investigations an exceptionally fine collection of 

 Antarctic and sub-Antarctic Polyzoa has been made, as well as small collections 

 from South Africa, New Zealand and certain islands in the tropical Atlantic. Together 

 with this Discovery material I have studied the collections made by the National 

 Antarctic Expedition (190 1-4) and the British Antarctic ('Terra Nova') Expedition; 1 

 the South Georgian Polyzoa collected by the Shackleton-Rowett (' Quest ') Expedition ; 

 and collections from the Falkland Islands lent to me by the Hamburg Museum and 

 the U.S. National Museum. 



British Museum specimens are designated throughout by their registration numbers 

 which consist of four numbers separated by full stops, thus : 87 . 12 . 9 . 166, or 1938 .3.5.1. 



Six families are considered in this report. They comprise eighty Antarctic and 

 sub- Antarctic species with fifteen varieties (see Table 3, p. 479). The only species in 

 Table 3 that I have not had an opportunity of examining are six of the abyssal 

 forms. A list of the species collected by the Discovery and the Terra Nova Expeditions 

 at localities outside the Antarctic and sub- Antarctic area is given on p. 491. A list of 

 the species discussed in the systematic part of the report is given on p. 3 18, and on p. 305 

 a list of species obtained at each Discovery station. 



The inclusion of the Scrupariidae is for convenience, and is not meant to imply that 

 I regard the problem of whether they belong to the Cellularina or the Malacostega as 

 settled (cf. Harmer, 1926, p. 187). I have no doubt that Brettia triplex belongs to the 

 Cellularina, but its relationship to the other species of Brettia is uncertain. 



INTERPRETATION OF BUSK'S WORK 



It should perhaps be explained that Busk's original drawings have recently come into 

 my hands, and, as many of them have unpublished data written on them, they are 

 useful in interpreting his work. 



In the past the scanty explanations published with Busk's figures have been a great 

 difficulty. A species would be recorded from several more or less remote localities, and 



1 Anyone re-examining the Terra Nova material should be warned that some specimens have a false 

 appearance of pigmentation because they have spent many years in jars of mixed material which included 

 animals whose pigment has dissolved in the spirit and stained the whole contents of the jars. 



