24 2 DISCOVERY REPORTS 



Apart from the Hardy and Gunther (1935) and Monro (1936) records already noted, only Stop- 

 Bowitz (1949, 195 1) has previously reported P. longicirrata from South Georgia from collections made 

 by the Norwegian and Swedish Antarctic Expeditions in East Cumberland Bay, from 160 to 72 m. 

 (one specimen) and 150 to o m. (one specimen) respectively. 



Monro (1936) previously reported P. longicirrata from around the South Sandwich Islands, at 

 St. WS 555 and Stop-Bowitz (1949) reported it from two 'Norwegica' Stations at 57 48' S., 

 26 25' W., from 400 to 300 m., and 55 33' S., 26 26' W., from 100 m. 



Other records from the Antarctic Zone include Augener (1929) from seventeen stations in the 

 Weddell Sea from 600 m. to the surface. The farthest south of these is in 77 40' S. close in to the 

 Filchner shelf ice, the most southerly record for P. longicirrata or any adult pelagic polychaete in the 

 Atlantic. The 'Norwegica' (Stop-Bowitz, 1949) collected it at four stations other than those already 

 mentioned, from 59 53' S., 8° 40' W., 400-500 m., 59 09' S., 9 58' W., 300-100 m., 57 37' S., 

 19 16' W., 200-50 m., and 58 09' S., 37° 38' W., 300-200 m., and the Swedish Antarctic Expedition, 

 1 901-3, found it at the following positions, 52 43' S., 58 52' W., 6i° 29' S., 58 o' W. and 63 33' S., 

 44 26' W. (Stop-Bowitz, 1951). 



North of the Antarctic Convergence Reibisch (1895) reported P. longicirrata from Ascension 

 Island north-west to the mouth of the Amazon and north to the Equator, in regular abundance from 

 the surface to 200 m., once at 400 m. and again at 1000 m.; Stop-Bowitz (1951) reported it once off the 

 coast of Brazil at 4 26' N., 28 59' W., from 750-500 m. Friedrich (1950) noted its abundance 

 throughout the South Atlantic in the ' Meteor ' collections but gave no details. 



Maupasia caeca 

 (Text-fig. 44) 



M. caeca is a widely, though sparsely, distributed species in the South Atlantic Ocean and does not 

 appear to be restricted in its range by surface hydrological boundaries. It rarely measures more 

 than 6 mm. long and was caught only by N 70 nets. 



At each of the following stations and depths, one specimen was collected : St. 117, 250-100 and 750- 

 500 m.; St. 1776, 1000-750 m.; St. 2018, 500-250 m.; St. 2020, 1000-750 m. ; St. 2023, 750-500 m. ; 

 St. 2024, 750-500 m. ; St. 2359, 750-500 m. ; St. 2496, 500-250 m. ; and St. 2533, 1 500-1 000 m. 



These stations include the first records of M. caeca in the Antarctic Zone of the South Atlantic 

 Ocean. It was collected in the Warm Deep Water at Sts. 117, 2018, 2020, 2359 and 2496. In the 

 Sub-Antarctic Zone this species occurred in the Antarctic Intermediate Water, at Sts. 1776, 2023 

 and 2024, and in the Warm Deep Water at St. 2533. There are no records of M. caeca in Discovery 

 material from Tropical and Sub-Tropical Zones although it has been reported from there by other 

 workers. 



Previous records. M. caeca was originally described from specimens collected in the Mediterranean 

 (Bay of Algiers) by Viguier (1886); Ehlers (191 2) first reported it in the Antarctic Zone from the 

 collections of the National Antarctic Expedition 190 1-4 in McMurdo Sound, and from the Deutsche 

 Siidpolar-Expedition 1901-3, off Kaiser Wilhelm II Land (Ehlers, 1913). In this latter work, Ehlers 

 also recorded it from oo° 52' S., 16 00' W., in the Tropical Zone of the South Atlantic. Southern 

 (1909) reported this species as M. caeca var. atlantica from 51 54' N., 11° 57' W.; Fauvel (1916) 

 reported M. caeca off Cape Finisterre; Hardy and Gunther (1935) found it at St. WS 70 in the Sub- 

 Antarctic Zone of the South Atlantic, and Wesenburg-Lund (1939) recorded it from the Mediter- 

 ranean. Friedrich (1950c) reported Maupasia from the 'Meteor' collections in the Sub-Antarctic 

 Sub-Tropical and Tropical Zones. 



