TRACHYMEDUSAE 51 



Distribution. Botrynema briicei is a widely distributed bathypelagic species. It has been found 



in several localities in the northern Atlantic, south of the submarine ridge between Scotland, Iceland, 



Greenland and Baffin Land (Kramp 1942, 1947 and 1948 a Russell 1953). H. glabrum Vanhoffen 



was taken in seven localities off the west coast of Africa, from the Canary Islands to the Cape of 



Good Hope and in one locality in the central part of the Indian Ocean. The original specimen of 



B. bnicei was found in the Weddell Sea (Browne 1908), and it was recorded under the same name from 



antarctic waters, north-west of the Gauss Station (Vanhoffen 1912a). In the Pacific it has only been 



found in the Bering Sea (Bigelow 1913). The localities where it was collected by 'Discovery', 



* Discovery II ' and ' William Scoresby ' are within the same regions from which it was previously known, 



but they show that the species is much more common in the southern Atlantic and the Antarctic area 



than was previously known. Some of the specimens recorded as Halicreas papillosum by Thiel (1936) may 



have belonged to B. briicei. 



Halitrephes maasi Bigelow 1909 



(Text-fig. 19) 



1909 Halitrephes maasi Bigelow, p. 146. PI. 33, figs. 1-5, 7, 10; PI. 45, fig. 13. 



1912a Halitrephes valdiviae Vanhoffen, p. 384, in part. 



Occurrence: St. 89. 28. vi. 26. 34° 05' 15" S, 16° 00' 45" E. Net: TYF looo(-o) m. i specimen. 



St. 100. 4. X. 26. 33° 20' S, 15° 18' E to 33° 46' S, 15° 08' E. Net: TYFV 2500-2000 m. i specimen. 



St. 256. 23. vi. 27. 35° 14' S, 06° 49' E. Net: TYF 850-1 loo(-o) m. 2 specimens. 



St. 677. 27. iv. 31. 31° 16' 15" S, 29° 56' 30" W. Net: TYFV 2000-0 m. i specimen. 



St. 893. 1-2. vi. 32. 49° 37' 30" S, 138° 35' 18" E. Net: N 100 B 260-100 m. i specimen. 



St. 925. I. vii. 32. 41° 20' 30" S, 167° 55' 30" E. Net: N 100 B iio-o m. 2 specimens. 



St. 963. 14. ix. 32. 52° 01' 06" S, 139° 13' 12" W. Net: N 100 B 320-128 m. 2 specimens. 



St. 1586. 2. V. 35. 02° 39' 24" N, 50° 46' 24" E. Net: TYFB 1650-950 m. i specimen. 



St. 1606. 31. X. 35. 26° 15' 48" S, 12° 18' E. Net: TYFB 190-0 m. i specimen. 



St. 1758. I. V. 36. 31° 55' 36" S, 55° 06' 30" Eto3i° 55' S, 55° 05' 06" E. Net: N 450 B 1400-650 m. 2 specimens. 



St. 2044. 23. iv. 37. 28° 38' S, 01° 11' 12" W. Net: N 450 B 550-750 m. 2 specimens. 



St. 2050. 26. iv. 37. 20° 26' S, 02° 16' W. Net: N 450 B 430-0 m. i specimen. 



St. 2059. 30. iv. 37. 09° 11' 24" S, 05° 17' 24" W. Net: N 450 B 1900-1400 m. i specimen. 



St. WS 127. 10. vi. 27. 40° 19' S, 10° 06' W. Net: N 70 V 1000-650 m. 2 specimens. 



Moreover, the following specimens may with some doubt be referred to the same species : 



St. 401. 22. v. 30. 37° 31' 30" S, 04° 33' E to 37° 29' S, 04° 39' 30" E. Net: TYFH 1200-1300 m. i specimen. 

 St. 702. 17. X. 31. 10° 59' 18" N, 27° 03' 48" W. Net: TYFB 236-0 m. i specimen. 



Most of the localities are in the Atlantic Ocean, off the southern part of the west coast of Africa. 

 Stns 1586 and 1758 are off the east coast of Africa. St. 893 is south of Australia, St. 925 near New 

 Zealand, St. 963 between New Zealand and South America (text-fig. 19, p. 103). 



Almost all the specimens are in a bad state of preservation ; the jelly is very soft, the stomach is 

 usually lost, and as a rule only a few of the radial canals can be traced, but in most specimens it 

 was possible to state the approximate number of tentacles. 



I have counted the radial canals and tentacles as follows : 



The specimen from St. 401 is 55 mm. in diameter and has about 115 tentacles; it is possible, there- 

 fore, that it belongs to another species. 



The best preserved specimen was taken by 'William Scoresby' at St. WS 127. The margin is bent 

 somewhat inwards, the diameter of the umbrella 40 mm., the stomach 14 mm. ; in half the circumference 



7-2 



