MORPHOLOGICAL CHARACTERS 203 



specimens have seven or less (16 out of 26). Similarly on the third and fourth arms the majority of 

 Atlantic specimens have six or more pairs (39 specimens out of 53), whereas the majority of Indo- 

 Pacific specimens have five or less (19 specimens out of 29). 



Table 5. Summary of data on maximum number of pairs of primary cirri, situated normally on the 



first or second arms 



* Includes one specimen that may have possessed a tenth pair (Pickford, 1949a). 



Table 6. Summary of data on minimum number of pairs of primary cirri, situated normally on the 



third or fourth arms 



* Includes data for the Bermuda series listed but not analysed previously (Pickford, 1950). 



GEOGRAPHICAL DISTRIBUTION 



The geographical distribution of the Discovery specimens is given in the list of specimens (Table 1) 

 and shown graphically on the map (Fig. 1). Since none is from the Pacific this ocean has been 

 omitted except in so far as its periphery appears on the maps of the Atlantic and Indian Oceans. 

 To complete the picture it may be stated that there are five additional Pacific records, not shown in 

 Fig. 1 , which are rather uniformly distributed along a line between Panama and Australia, following 

 the cruise of the 'Dana', 1928-30. 



Six of the Discovery specimens are from the Eastern Atlantic, in the vicinity of the Guinea and 

 Angola Basins. This is a region already well known to be populated by Vampyroteuthis, and in fact 

 the type specimen came from i° 567' S and 7 40-6' E in the Gulf of Guinea. 



