FIGURES 61 -D, 62, and 63 



Fig. 61-D. Distribution of species of Gonyaulax at Carnegie stations. 



Fig. 62. Gonyaulax pacifica Kofoid. A, ventrolateral view of specimen, from station 

 45; B, cross section of girdle; C, ventrolateral view showing sutures only; D, apical view of 

 same; E, antapical view of specimen from station 22; F, apical view of separated girdle 

 plates; G, antapical view of specimen shown in A; H, true ventral view of specimen from 

 station 49; I, right lateral view of specimen shown in A; J, left lateral view of same; K, ven- 

 tral view of undissected ventral area; L, ventral view of separated sulcal and adjacent plates. 

 Magnification: x 340. Symbols: al, a2, first and second anterior intercalary plates; ant, 

 antapical plate; apl-ap3, first to third apical plates; ar, anterior segment of right sulcal 

 list; as, anterior sulcal plate; gl-g6, first to sixth girdle plates; i, intercalary sulcal plate; 

 11, left sulcal list; Is, left sulcal plate; pas, posterior accessory sulcal plate; pol-po6, first 

 to sixth postcingular plates; prl-pr6, first to sixth precingular plates; ps, posterior sulcal 

 plate; ra, right accessory sulcal plate; rs, right sulcal plate; vp, ventral epithecal pore. 



Fig. 63. Gonyaulax fusiformis n.sp. A, reconstruction of apical view, arrows indi- 

 cate position of girdle sutures; B, diagram of plate pattern in apical view; C, diagram of 

 the ventral area undissected; three plates also shown separately in their broadest aspect; D, 

 ventral view of specimen from station 18; E, ventral view of another specimen from the same 

 sample; F, antapical view of same specimen; G, right lateral view of same specimen partial- 

 ly dissected, showing inside surface of the second apical plate. Magnification: x 520. Sym- 

 bols: al, a2, first and second anterior intercalary plates; ac, anterior cingular list; ant, 

 antapical plate; apl-ap3, first to third apical plates; as, anterior sulcal plate; g4-g6, fourth 

 to sixth girdle plates; i, intercalary sulcal plate; 11, left sulcal list; Is, left sulcal plate; p, 

 flagellar pore; pc, posterior cingular list; pi, posterior intercalary plate; pol-po6, first to 

 sixth postcingular plates; pp, anterior pore platelet; prl-pr6, first to sixth precingular 

 plates; ps, posterior sulcal plate; ra, right accessory sulcal plate; rl, right sulcal list; rs, 

 right sulcal plate; sp, sulcal spine; va, ventral area; vp, ventral epithecal pore; x, limb of 

 second apical plate; y, limb of third apical plate. E, F, G, type specimen. 



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