PTEROPoDA. MASSY. 



223 



PTEROTA. 

 FAMILY <'U<>XII>AK. 



Ci-:xi-s CLIONE, P.-ilk*, 1771. 

 I. <_'//, >ih antarctica, K. A. Smith. 



Clione antarctica, K. A. Smith, 190:3; Eliot, 



Clione Umacina var. tiiitun-tii-n. Mcisnihcimer, 1906. 



Antarctie (near Ross Sea). 

 Station 186, two. 

 '_' 17. one. 

 2-21, one. 

 2-22, fourteen. 

 2G9 <'n. two 



seventy. 



Aiitaretie (Mc.Murdo S< 

 Station :;17, 



June 28, i'ii. one hundred and tiftv. 

 Ail"-. 8. i'ii. one hundred and twent\ 

 Station .",23, fit. two thousand 

 333, twelve. 

 :;:!(], one. 



,, 337. <". seventy-four. 

 ,, 342, twenty-one. 



hundred and 



d). 



Antarctic (McMlirdo Sound). 



Station .",4:!. five. 



:'.44, twenty. 

 ,, -.4."), twelve. 

 ,, 340, one. 



850. thirteen. 

 351, 

 April ->0. I (i metres, seventeen. 



May 2, 30 

 .. 18. 10 

 .. 19. 30 

 .. 20, 50 

 21,100 



Station 354, fit. sixty. 

 357. tiftv-six. 



nine. 



twelve. 



fit. sixty. 



Cii. three hundred. 



fn. one hundred 



and twentv. 



The above specimens, amounting to about three thousand three hundred, wen- 

 taken at practically all seasons of the year, the only mouths in which they were not 

 fished being July, September, October and November. Eliot (1907, p. 12), notes that 

 the specimens taken by the '-Discovery" were all captured between the months of 

 November and March. The "Terra Nova" specimens varied in size from 0'7."> mm. to 

 9 mm. In each haul they usuallv consisted of very small examples of an average of 

 2-3 mm., with a few larger individuals. In the months of December and Januarv the 

 larger specimens seemed to be predominant. There is no evidence to show that the 

 species habitually affects any special layer of the water either at one season or another. 

 As Kliot savs (n/>. cit. p. 13) with regard to this species and (.'. liiinifi/ui, Phipps, there 

 is no doubt that the two are nearly allied. As. however, all the above specimens 

 occurred only in Antarctic waters and. moreover, bear out very fully the differences 

 noted by Eliot (ji. fit. p. 13) between C. Hiniifinn and <'. iintiirctifii, it seems as if the 

 latter should be entitled to specific rather than varietal rank. The presence of larval 

 rings to a late age and the white prominences composing the anterior one arc verv 



