THORACIC CIRRIPEDES COLLECTED IN 1925-1936 235 



Cirrus I shorter than the other cirri, rami unequal in length with two segments. 



Cirrus IV with six pairs of spines on the front edge of the segments. The caudal 

 appendage is single-jointed and pointed without bristles. The appendage is about the 

 same length as the proximal segment of cirrus VI. 



The complemeiJtal male is of the reduced sack-like type. 



In the capitulum a number of cypris stages were found, indicating that the specimen 

 dissected was mature. As earlier stated (Nilsson-Cantell, 1921) several Scalpelliim 

 species from Antarctic and sub-Antarctic seas as for instance S. gibbenim, convexutn, 

 cotnpactiim and ventricosum, like this new species, have the first development until 

 metanauplius or cypris stage in the mantle cavity. 



Genus Lepas Linne, 1767 

 Lepas australis Darwin, 185 1. 



Darwin, 185 1, Monogr. Lepadidae, p. 89. 



St. 63. 22. V. 26. 48° 50' 00" S, 53° 56' 00" W. Surface. Gear NH. Some smaller specimens on 

 floating Macrocystis. 



St. WS 69. 22. ii. 27. 52° 19' 00" S, 52° 11' 00" W. 0-5 m. Gear NH. Some specimens on 

 Macrocystis . 



St. WS 237. 7. vii. 28. 46° 00' 00" S, 60° 05' 00" W. 150 m., c.br.s. sh. Some specimens on 

 Lamijiaria. 



3. V. 32. 48° 00' 00" S, 99° 00' 00" E. Some specimens on algae brought up on wire. 



Distribution. Pelagic with a wide distribution in the southern hemisphere. 

 According to Gruvel (19 10) the species is held to have a cosmopolitan distribution. 

 No localities are recorded from the northern seas. Here it is taken north and east of 

 Falkland Islands and from the South Indian Ocean. 



Genus Conchoderma Olfers, 18 14 

 Conchoderma auritum (Linne, 1767). 



For synonymy see Nilsson-Cantell, 192 1, Zool. Bidrag Uppsala, vn, p. 240. 



26. xii. 34. 57° 20' 00" S, 32° 00' 00" W. From Humpback whale. Three specimens on Coronula 

 diadema from lower jaw. Taken by S.S. 'Sourabaya'. 



5. xi. 30. South Georgia. From a Fin whale, No. 3281, $, 22-3 m. Two specimens from baleen 

 plate. 



1934-5. South Atlantic. From a Blue whale. Some large specimens on Coronula diadema. 



June 1930. Durban. From a Sperm whale. Several specimens from jaw. 



19. xi. 28. South Georgia. From a Blue whale, No. 1933, ?, 24-6 m. One specimen on Coronula 

 reginae. 



20. ill. 28. Husvik, South Georgia. From a Sperm whale. Some smaller specimens cut off teeth. 



Distribution. Cosmopolitan and pelagic, on Coronula attached to whales, on teeth 

 and baleen plates of whales. Also situated on such objects as fishes, eels, ships and buoys. 



Discussion. To the supplementary description given by Nilsson-Cantell, 1930, 

 nothing need be added here. 



