KOFOID AND SWEZY: UNAEMORED DINOPLAGELLATA 



169 



uew germs HcteranJacus Ehrenberg's Peridinium fuscum and P. monas and 

 Schmarda's (1846) P. adriaticum.. He changed this generic name in his later 

 Revision der Protlidminthen (1866) to Heteroaulax and added thereto 

 Schmarda's (1854) Peridinium inerme. Alhnan's (1854) species uherrima was 

 placed by him in Peridinium, 1;mt was later made the t^qoe of Melodinium by 

 Saville-Kent (1880-82), but it clearly belongs to Gymnodimum, established in 

 1878 hx Stein. 



Fig. BB. Gymnodinitim. 1. G. lohmanni (Paulsen). After Lohmann (1908, pi. 17, fig. 26). 2. G. triangu- 

 laris Lebour. After Lebour (1917b, fig. 7). 3. G. zachariasi (Zach.) Lemm. After Zacharias (1899, fig. 4). 

 4. G. lachmanni Saville-Kent. After Saville-Kent (lSSO-82, pi. 25, fig. 59). 5. G. lohmanni Paulsen. After 

 Lohmann (1908, pi. 17, fig. 25). 6. G. lachmanni Saville-Kent. After Saville-Kent (1880-82, pi. 25, fig. 58). 

 7. G. monadicum (Perty). After Perty (1852, pi. 7, fig. 15). 8. G. simplex (Lohm.). After Lohmann (1908, 

 pi. 17, fig. 17). 9. G. bicaudatum Pavillard. After Pavillard (1905, pi. 3, fig. 5). 10. G. bicorne sp. nov. 11. 

 G. roseolum (Schm.). After Schmarda (1854, pi. 1, fig. 9). 12. G. lohmanni Paulsen. After Lohmann (1908, 

 pi. 17, fig. 28). 13. G. tintinnicola Lohmann. After Lohmann (1908, pi. 17, fig. 6). 14. G. cor^xisculnm (Perty). 

 After Perty (1852, pi. 7, fig. 14). 15. G. inerme (Schm.). After Schmarda (1854, pi. 1, fig. 8). 16. G. rete 

 Schutt. After Sohiitt (1S95, pi. 21, fig. 63). 17. G. gracile v. exiguum Pouehet. After Pouchet (1883, pi. 21, 

 fig. 40). 18. G. pjinctatum Pouehet. After Pouchet (1887, pi. 10, fig. 7). X 500. 



