NEW PEEIDINIACE^ EKOM THE ATLANTIC. 341 



EXPLANATION OF THE PLATES. 

 Plate XXVII. 



Fig. 1. Goniodoma fimbriatum, Murr. & Whitt. : a, ventral view; b, dorsal view, x 840. 



Fig. 2. Gnniodoma Milnerl, Murr. & Whitt. : a, side view ; b, ventral view ; c, encysted form opening ; 



d, the same closed. X 420. 

 Fig. 3. Goniodoma spharicum, Murr. & Whitt. : a, ventral view ; b, view of proximal limb, x 860. 

 Fig. 4. Ceratium biconicum, Murr. & Whitt. : a, dorsal view ; b, ventral view ; c, side view. X 400. 

 Fig. 5. Plychodiscus Nodiluca, Stein: a, view of proximal limb; b, dorsal vievv ; c, \ Sir. Jimbriat us, 



view of proximal limb. X 760. 

 Fig. 6. Oxytoxum Milneri, Murr. & Whitt. x 530. 

 Fig. 7. Oxytoxum constricium, Schiitt. x 860. 



Plate XXVIII. 



Fig. 1. Gonijaulax Jolliffei, Murr. & Wliitt. : a, dorsal view ; Z>. ventral view, x 470. 

 Fig. 2. Gonyimlax Highlei, Murr. & Whitt. : a, ventral view; b, dorsal view, x 810. 

 Fig. 3. Gonyaulax glyptorhynchus, Murr. & Whitt. : a, dorsal view ; b, ventral view ; c, ventral view 



of form varying as to spine on proximal limb. x 840. 

 Fig. 4. Gonyaulax Turbynei, Murr. & Whitt. : a, ventral view ; b, dorsal view. X 840. 

 Fig. 5. Diplopsalts scemlaris, Murr. & Wliitt. : a, ventral view; b, distal limb; c, d, e,f, views of forms 



varying from the typical oue represented in a and b. x 420. 



Plate XXIX. 



Fig. 1. Peridinhim fJindmarchii, Murr. & Whitt. : a, dorsal view ; b, venti'al view, x 500. 



Fig. 2. Peridinium hiorhynckmn, Murr. & Whitt. : a, ventral view; J>, lateral view x 600. 



Fig. 3, Peridinium Milneri, Murr. & Whitt. : a, dorsal view; h, ventral view. X 840. 



Fig. 4. Peridinium divergens, Ehrenb. : a, dorsal view ; b, ventral view of variety, x 500. 



Fig. 5. Peridinium trirostre, Murr. & Wliitt. : ventral view, x 420. 



Fig. 6. Peridinium. Blackmani, Murr. & Whitt. : a, dorsal view ; b, side view ; c, ventral view. X 370. 



Fig. 7. Peridinium vexans, Murr. & Whitt. : a, ventral view ; b, dorsal view, x 810. 



Fig. 8. Peridinium spinulosum, INIurr. & ^^'hitt. X 600. 



Plate XXX. 



Fig. 1. Peridinium sp/uericum, Murr. & Whitt. : a, dorsal view ; b, ventral view. x 860. 



I'jg- 2. ? Peridinium Globulus, Stein. x 860. 



l^'ig. 3. Peridinium Doma, Murr. c^ Whitt.: ventral view. x 800. 



l^'ig. 4. Peridinium. Tripos, Murr. & Whitt. : a, dorsal view ; b, ventral view. X SIO. 



^ '??• 5. Ceratocorys horrida, Stein : a, side view ; b, encysted, x 420. 



I''g. 6. Ceratocorys spinifera, Murr. & Whitt. : a, ventral view; Z», dorsal view (both x 840); c, proximal 



limb, young state ( x 620) ; d, proximal limb, mature state ( x 410) ; e, form with two spines 



only (x 840). 

 S^ECOND SERIES. BOTANY, VOL. V. ^ E 



