ENTOMOSTRACA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 285 



F;im. PARACALANID^E. 



Genus r<inii-nfiiiiuii, Bocck, 18(>-l. 



Paracalanus aculeatux, Giesbreclit. 



1888, I'lintJ-a/itiiiix iii-n/i'iiliiif, (lii-sl)., op. c//., p. 333. 



This I't(r<tr<(/iiitx was met with at eight stations in the. North, and four in the South 

 Atlantic, ranging from Stations 2<> to (!(!, 14 33' N., 25 9' W., to 7 9' 8., 34 3</ W, 



Genus Acrocalanus, Giesbreclit, 1888. 



Acrocahniitx loiujicontis, Giesbreclit. 



1888, Arrni-aliinuK fuM/ii-tii-iti*, (iirsli., n/i. <-i/., 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, Giesbreclit, 1888. 



Calocalanus pavo (Dana). 

 1849, Calanus pavo, Dana, Proc. Arner. A('in!., 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 (Clans). 

 1863, Calanus plumulosus, (.'laus, Die freilebenden Copepoden, p. 174, pi. xxvi. figs. 15, 1G. 



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

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



Genus Clausocalanus, Giesbrecht, 1888. 



Clausocalanus arcuicornis (Dana). 

 1849, Calanns 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' \V., to 46 03' S., 5(5 30' W. 



Clausocalanus furcatus (G. S. Brady). 



1883, Drepanopus fun-atus, Brady, Report " ('/<//.,"" Copop.," p. 77, pi. iv. figs. 1 and 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, 5!>, and 90, 22 19' N., 

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



(ROY. 3OC. KIUN. TRANS., VOL. XI, VIII., . r )31.) 



