346 DISCOVERY REPORTS 



St. 407. 12. vi. 30. 35" 13' to 34° 57' S, 17° 5oi' to 17° 48' E, south-west of Cape of Good Hope. 

 4-2- m. tow-net, 800-900 m. 

 Eleven specimens, well preserved, 17-22 mm. diam.; nine typical, two "Bigelow" stages. The 

 typical are all broader than high, with " Stielcanal", well-developed gonads visible from outside, 

 pigment very dark, lappet zone fully transparent, largest specimen 18 mm. high. Caught together 

 with many specimens of Atolla chuni and wyvillei. 



St. 256. 23. vi. 27. 35° 14' S, 6° 49' E, west of Cape of Good Hope. Young fish trawl, 850-1100 

 (-0) m. 

 Five specimens well preserved, typical, 17-22 mm. in diam., all broader than high; two with, 

 three without "Stielcanal"; one without, others with gonads. Together with one Periphylla 

 hyacinthina , transitional stage. 



St. 256. 23.vi. 27. 35° 14' S, 6° 49' E, west of Cape of Good Hope. Young fish trawl, 850- 

 iioo (-0) m. 

 One specimen in fair condition, highly vaulted, 21 mm. diam., 19 mm. high, with "Stielcanal", 

 gonads greenish with large eggs. 



St. 151. 16. i. 27. 53° 25' S, 35° 15' W, north of South Georgia, i m. tow-net, 500-625 m. 



One specimen, 11 mm. diam., flat, "Bigelow" stage, rhopalia without pigment. 

 St. 592. 15.1.31. 64° 17' S, 75° 31' W, south of South Shetlands. i m. tow-net, 350-124 m. 



One specimen, 27 mm. diam., 16 mm. high, badly preserved, flatly vaulted, short "Stielcanal", 

 reddish not dark brown pigment on stomach, lappet zone fully transparent, tentacles brownish. 



St. 590. 14.1.31. 65° 2oi' S, 73°3oi'W, between South Shetlands and Bellingshausen Sea. 

 Young fish trawl, 1 150-1400 m. 



One specimen, typical, preserved in spirit, 22 mm. diam., 18 mm. high, with "Stielcanal", no 

 gonads. 



Transitional stages to hyacinthina typica^ 



2. xi. 25. 6° 55' N, 15° 54' W, south of Cape Verde Islands. 2 m. tow-net, 0-800 m. 



One specimen, fixed chromo-formalin, 23 mm. diam., flat, depressed, no " Stielcanal ", no gonads, 

 stomach dark brown, lappet zone hyaline, with pigment on lappet muscles. 



St. 286. 17. viii. 27. 3° 06' 30" S, 3° 53' W, Gulf of Guinea. Young fish trawl, 125 (-0) m. 



One specimen in fair condition, peculiarly formed, 21 mm. diam., 26 mm. high, much higher than 

 broad, with long broad " Stielcanal ", gonads distinctly to be seen from outside, stomach dark brown, 

 lappet zone hyaline, lappet muscles only faintly brownish : a typical transitional stage. 

 St. 270. 27. vii. 27. 13° 58' 30" S, 11° 43' 30" E, Elephant Bay, Angola. 70 cm. tow-net, 126-0 m. 



One beautiful specimen, 29 mm. diam., 26 mm. high, stomach highly vaulted, no "Stielcanal", 

 no gonads, stomach dark brown, lappets transparent with brownish muscles, brownish tentacles. 



St. looc. 4. X. 26. 33° 20' to 33° 46' S, 15° 18' to 15° 8' E, west of Cape of Good Hope. Young 

 fish trawl, 2000-2500 m. 

 One specimen in fair condition, 25 mm. broad and high, with " Stielcanal", gonads clearly visible 

 from outside, stomach very deeply pigmented, lappets hyaline with pigment on lappet muscles. 



St. 256. 23.vi.27. 35°i4'S, 6°49'E, west of Cape of Good Hope. Young fish trawl, 850- 

 iioo (-0) m. 



One specimen, 32 mm. diam., 27 mm. high, with " Stielcanal ", with gonads, stomach dark brown, 

 lappet zone brownish, tentacles white, gonads visible from outside: transitional stage on account of 

 colour of lappets. 



1 In this group the size of the specimen is very variable. Here the colour of the lappet zone is regarded 

 as the more important character. 



