Alsfae. 375 



'^fs 



tensiim Cleve var.? ,(left antapical hörn is very weak and curves 

 in Upper portion), C. hreve v. parallelum (Schmidt) Jörgens., C.hnce- 

 phaliun Cleve, C. arietimtm Cleve, C. gibbemm Gourr., and f. sini- 

 styum Gourr., C. luniila Schimper, C. longinurn Karst., C. contortunt 

 V. saltajis (Schröd.) Jürgens., C. limn hi s Gonrr., C.palmatiim (Schröd.) 

 Schröd., C. deflexum (Kofoid.) Jörgens., C. massüiense (Gourr.) Jör- 

 gens., C. carriense f. ceylanicum (Schröd.) Jörgens., C. Hundhausenii 

 Schröd., C. vultur Cleve, and v. japonicutn (Schröd.) Jörgens., C. 

 vultiir var. teniie n. var. (: Angular flexure of antapicals and stoutness 

 of all three horns same as C. viiltur Cl., only differing in having 

 smaller and slenderer and consequently relatively elongated body), 

 C. vultiir var. divergens n. var. (: the right antapical bends abruptly 

 at origin and runs out almost in straight line av^^ay from the apical 

 hörn. The left one makes larger curves after the manner of C. ma- 

 croceras and runs diverging from the apical hörn. Angles of ant- 

 apical horns are more divergent than in the typical plant), C. su- 

 matranum (Karst.) Jörgens, C. Pavülavdii Jörgens, C. trichoceras 

 (Ehr.) Kofoid., C. inßexum. (Gourr.) Kopoid., C. teniie Ostenf. et 

 Schm., C. rnolle Kopoid., C. reticulatum (Pouchet) Cleve, C. reticida- 

 tum f. coniorte (Lemm.) Jörgens, Gonyaidax Highleii Murr, and 

 Whitt., G. polygramtna Stein, Croniodonia acurninatiitn Stein, Peri- 

 düinirn sphaericiun n. sp., P. pallidiun Ostenf. var.? P. depressuni 

 Baley, P. ocemiicinn var. oblongurn Anriv., P. fatidipes Kofoid., P. 

 crassipes Kofoid., P. longipes Karst., P. inflatiini n. sp., P. tripos 

 Murr, and Whitt., Podolampas bipes Stein, P. palmipes Stein, P. 

 spinifera sp. n. -prov., Oxytoxum scolopax Stein, 0. tesselatuni (Stein) 

 Schutt, O. diploconus Stein var. fusiformis n. var.? (Very minute 

 form resembling O. diploconus, only differing in the fusiform shape 

 of h^'^potheca. The widest part is on middle portion of the body that 

 is in the anterior one third portion of hypotheca); Ceratocorys hor- 

 rida Stein, Phalacroma operciüoides Schtitt, Ph. porodictynni Stein, 

 Ph. ciineus Schutt, Ph. doryphoruni Stein, Ph. }nitra Schtitt, Dino- 

 physis horminculus f. pedunculata Schmidt, D. hastata Stein, D. 

 ovuni Schutt, D. sphnerica S\e\n , Atnphisolema bidentata Schröd., A. 

 thyinax Schutt, Ornithocercus magnificus Stein, Histioneis Highlei 

 Murr, et Whitt., H. Para Murr, et Whitt., H. paulseni Kofoid (: so- 

 mewhat differs by having reticulations on the sail, and absence of 

 hyaline border at anterior margin of posterior collar and small- 

 ness of anterior collar.); Ptychocylis iindella (Ostf. and Schm.) Brandt, 

 Cyttarocylis striata Cl. f. curia CL, C. Hebe Cleve, C. denticulata var. 

 äpophysata n. var.? (: having very minute teeth at mouth and no 

 structure); Undella Claparedii (Entz sen.), Dictyocysta templuniiia.eckel. 



A few new species are briefly described below: 



Ceratium nipponiciim n. sp. An elongated species showing a 

 close affinity to C. inflatum Kofoid, distinguished from which chiefly 

 by the lateral compression that its body is compressed on right and 

 left sides and broadened instead of being more a less expanded on 

 dorsal and ventral sides. 



Peridiniicm sphaericunt n. sp. Cell spherical with very short 

 apical hörn, abruptly settled. Three spiness on the distal end of the 

 longitudinal furrow, two on the left and on the right side, both of 

 which winged. Very small form much resembling P. Cerasus Paulsen 

 in shape of body onl}»- differing in the number of antapical spines. 



Peridinium inflatum n. sp. Cell somewhat ovoid in ventral view, 

 with epitheca having convex sides and with short apical hörn. Hy- 

 potheca also, in ventral view, with convex sides near the girdle, 



