ENTOMOSTRACA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 285 



Fam. PARACALANID^E. 



Genus Paracalanus, Boeck, 1864. 



Paracalanus aculeatus, Giesbrecht. 



1888, Paracalanus aculeattis, Giesb., op. cit., p. 333. 



This Paracalanus was met with at eight stations in the North, and four in the South 

 Atlantic, ranging from Stations 26 to 66, 14 33' N., 25 9' W., to 7 9' S., 34 30' W, 



Genus Acrocalanus, Giesbrecht, 1888. 

 Acrocalanus longicornis, Giesbrecht. 



1888, Acrocalanus lonyicornis, Giesb., op. cit., p. 332. 



A. longicornis occurred sparingly in the twenty-one samples collected between 

 Stations 17 in the North and 95 in the South Atlantic, 20 18' N., 23 22' W., to 

 32 15' S., 47 30' W. 



Genus Calocalanus, Giesbrecht, 1888. 



Calocalanus pavo (Dana). 

 1849, Oulanus pavo, Dana, Proc. Amer. Acad., vol. ii. p. 13. 



This Calanoid was observed in gatherings from twenty-two stations, ranging from 

 7 to 94, 26 23' N., 20 20' W., to 30 25' S., 45 45' W., but was not very common in 

 any of them. 



Calocalanus plumulosus (Glaus). 



1863, (Jalanus plurnuLosus, Glaus, Die freilelenden Copepoden, p. 174, pi. xxvi. figs. 15, 16. 



The only gathering in which C. plumulosus was observed was collected at Station 

 25 in 15 15' N., 25 9' W. 



Genus Clausocalanus, Giesbrecht, 1888. 



Clausocalanus arcuicornis (Dana). 

 1849, Galanus arcuicornis, Dana, op. cit., p. 52. 



This was one of the more common species in the Scotia collections. It was observed 

 in gatherings of plankton from thirty-one stations, extending from Station 7 in the North, 

 to Station 112 in the South Atlantic, 26 23' N., 20 20' W., to 46 03' S., 56 30' W. 



Clausocalanus furcatus (G. S. Brady). 



1883, Drepanopus furcatus, Brady, Report " Chall." " Copep.," p. 77, pi. iv. figs. 1 aud 2, pi. xxiv. 

 figs. 12-15. 



In the Scotia collections this species appeared to be much rarer than the last. It 

 was observed in gatherings from only four stations, viz., 12, 13, 59, and 90, 22 19' N., 

 22 07' W., to 26 50' S., 42 20' W. 



(ROY. soc. BDIN. TRANS., VOL. XLVIII., 531.) 



