Vol. l] Kofoid. — Some New Tintinnidae. 299 



while C. helix is cylindrical with more or less pronounced curva- 

 ture of the tapering- apex. 



Dimensions — length, 52(V ; diameter of mouth, 100/*; at apex, 

 20 fx.- y width of spiral band, 20-60ju.. 



This species was taken but once, in a vertical haul from 35 

 fathoms to surface. S miles off Pt. Loma in June. 



