Kofoid. — New Species of Dinoflagellates. 



EXPLANATION OF PLATES. 



All figures have been drawn with camera lucida. They have been drawn in 

 ink for reproduction by Mr. A. B. Streedain from pencil sketches made by Miss 

 E. J. Rigden, with few exceptions, those designated in the explanations as drawn 

 from life being made by the author. 



ABBREVIATIONS. 



a. c, anterior collar. 



a. I. f, accessory lateral fin. 



ant., antapex. 



ap. p., apical pore. 



arb., arborescent thickening. 



a. v., anterior valve. 



car., carina. 



D., dorsal side. 



d. ant., dorsal antapical horn, 



f. p., flagellar pore. 



k., head. 



L., left side. 



I., lens. 



l.f., longitudinal furrow. 



I. i. p., left intercalary plate. 



/. v.f., left ventral fin. 



mb., midbody. 



mel., melanosome. 



«., nucleus. 



nk., neck. 



o. s., outer segment. 



p., pore. 



p. c, posterior collar. 



p. can , pore canals. 



p.f., posterior fin. 



ph., phaeosomes. 



p. v., posterior valve. 



R. y right side. 



r. l.f., right lateral fin. 



r. v.f., right ventral fin. 



s., suture. 



sk. el., skeleton elements. 



sp., spine. 



th. w., thickened wall. 



tr.f, transverse furrow. 



v., ventral side. 



v. a., ventral area. 



v. ant., ventral anterior horn. 



v.f, ventral fin. 



v. p., ventral pore. 



v. pi., ventral plate. 



