ZOOGEOGRAPHY 



257 



Alciopa reynaudii 



(Text-fig. 50, Table 31) 



A. reynaudii was collected only to the north of the Sub-Tropical Convergence and is restricted in its 



distribution in the South Atlantic to the Sub-Tropical and Tropical Zones. Measuring between 30 



and 40 mm. in length this species was normally collected only by the larger nets. 



In the Sub-Tropical Zone A. reynaudii was collected in South Atlantic Central Water and in the 

 Tropical Zone in South Atlantic Central or Tropical Surface Water. 



Table 31. Occurrence of Alciopa reynaudii 



Zone 

 Sub-Tropical 



Station 

 no. 



4!3 

 674 



7*4 



2028 

 2030 



Depth 

 (m.) 



35°-° 

 280-0 



246-0 



f 5^> 

 [118-0 



168-0 



Net 

 TYFB 

 TYFB 

 TYFB 

 N100H 

 N70B 

 N100B 



No. of 

 specimens 



Zone 

 Sub-Tropical 

 Tropical 



Station 

 no. 



2082 



273 



288 



289 



2079 



2647 



Depth 

 (m.) 



33°-° 



200-230(-o) 



25°(-°) 



225-I25(-0) 



250-O 



3IO-0 



Net 

 TYFB 

 TYF 

 TYF 

 TYF 

 TYFB 

 TYFB 



No. of 

 specimens 



Previous records. A. reynaudii has been reported from the Tropical Zone in the South Atlantic by 

 Greeff (1876, as Nauphanta celox) and Wesenberg-Lund (1939, as Greefia oahuensis) and from the 

 Tropical and Sub-Tropical Zones by Levinsen (1885, as Nauphanta celox) and Monro (1930, 1936, as 



Greefia oahuensis). 



Naiades cantrainii 



(Text-fig. 51, Table 32) 

 N. cantrainii occurs in abundance in the South Atlantic where it is clearly limited in its southerly 

 distribution at the Sub-Tropical Convergence. Measuring up to no mm. in length this species was 

 normally collected only by the larger nets. 



In the Sub-Tropical Zone AT. cantrainii was collected in South Atlantic Central Water at Sts. 677, 

 1600, 2028, 2082, 419 and 100 and in South Atlantic Central Water or Antarctic Intermediate Water 

 at Sts. 2048 and 2046. In the Tropical Zone the collections at Sts. 289 and 2646 were made in South 

 Atlantic Central Water and in this water mass or Tropical Surface Water at Sts. 707, 688, 692, 1594, 2079 

 (250-0 m.), 1598 and 2638. The specimen collected at St. 2078 was taken from Warm Deep Water and 

 those from Sts. 2079 (555-250 m.) and 2636 from the Antarctic Intermediate layer or South Atlantic 



Central Water. Table 32. Occurrence of Naiades cantrainii 



Zone 

 Tropical 



Station 



no. 



692 



698 



707 



J 594 



1598 



2078 



2079 



2636 

 2638 

 2646 



Depth 

 (m.) 

 350-0 

 470-0 

 182-0 

 144-0 

 180-0 

 2600—1400 

 (250-0 



1 555-250 

 950-550 

 150-0 



250-100 



Net 

 TYFB 

 TYFB 

 TYFB 

 TYFB 

 TYFB 

 TYFB 

 TYFB 

 TYFB 

 TYFB 

 TYFB 

 TYFB 



No. of 

 specimens 

 1 

 1 

 1 

 2 

 6 

 1 

 1 

 1 

 1 

 2 

 1 



Previous records. N. cantrainii was reported from a station on the Equator by Apstein (1900, as 

 Alciopa cantrainii) and Monro (1930, 1936) reported it from the Tropical Zone in the South Atlantic. 



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