

2^ p. x^'h- GO 



THORACIC CIRRIPEDES 

 COLLECTED IN 1925-1927 



By C. A. Nilsson-Cantell, Sweden 

 (Plate I, text-figs. 1-12) 



INTRODUCTION 



THIS collection of Cirripedes was brought home by the R.R.S. 'Discovery', the 

 R.R.S. 'William Scoresby ', and the staff of the Marine Biological Station at South 

 Georgia, during the years 1925-7. For the opportunity to study this collection I have 

 to express my best thanks to the chief of the expedition, Dr Stanley Kemp. I wish also 

 to thank Mr N. A. Mackintosh and Mr D. D. John, London, for assistance with the 

 localities and the printing, and Dr W. T. Caiman, London, Prof. Dr A. Schellenberg, 

 Berlin, and Dr N. Odhner, Stockholm, for giving me the opportunity to compare 

 material in the collections under their charge. I also wish to express my best thanks 

 to Mr T. Withers, London, for his kind assistance in correcting the English translation. 



Stations made by the ' Discovery' are entered first in the lists of localities under the 

 species headings and have no letters prefixed to the numbers. Those of the 'William 

 Scoresby' follow and are distinguished as WS 73, etc. Where the material was collected 

 from whales, the sex and length of the whale, and the serial number (No. 46, No. 968, etc.) 

 assigned to it by the Discovery observers, are given. A number of the specimens 

 were taken from whales for which such data are not available. 



The following symbols are used for nets, apparatus, etc., in accordance with Discovery 

 Reports, I, Station List: 



BTS Small beam trawl. Beam 8 ft. in length (2-45 m.): mesh at cod-end J in. (12-5 mm.). Ail 

 measurements are taken from knot to knot along one side of the mesh, not diagonally with 

 the mesh stretched. 



DC Conical dredge. Mouth 16 in. in diameter (40-5 cm.), with canvas bag. 



DL Large dredge. Light pattern, 4 ft. in length (1-2 m.). 



DLH Large dredge. Heavy pattern, 4 ft. in length (1-2 m.). 



LH Hand lines. 



^ ™h Nets with mesh of 4 mm. or 7 mm. (o-i6 or 0-28 in.) attached to back of trawl. 



N 100 H I m. tow-net. Mouth circular, i m. in diameter (3-3 ft.): mesh graded, at cod-end 16 to 



the linear inch. Horizontal. 

 NH Hand net. 



NRL Large rectangular net. Frame 8 ft. long and 2\ ft. wide (2-45 m. x 07 m.) with bag of 



\ in. mesh (12-5 mm.). 

 OTC Commercial otter trawl. Head rope 80 ft. (24-5 m.): mesh at cod-end ij in. (3-8 cm.). 

 OTL Large otter trawl. Head rope 40 ft. (12-2 m.): mesh at cod-end i;^ in. (3-2 cm.). 

 RM Mussel rake. 



