ß Dansk Botanisk Arkiv, Bd. 2, Nr. 4. 



C. Schmidtii Jørgensen, 1. c, p. 50, figs. 110, 111; C. curuicorne 

 Johs. Schmidt, 1. c., p. 215, figs. 3, 4, non Daday. A rare species 

 restricted to the Indian Ocean and the Malay Archipelago. 



C. strictum (Okamura et Nishikawa) Kofoid, 1. c, 1907, p. 172; 

 Jørgensen, 1. c, p. 27, fig. 49. 



Drawn by Dr. Justesen. 



C. sumatranum (Karsten) Jørgensen, 1. c, p. 73, figs. 153 — 154. 



The specimens drawn correspond well to the f. angulatum Jørg. 

 (1. c, p. 74; C. tripos viiltur v. snmalrana Karsten, Deutsche Tiefsee- 

 Exp., Bd. 2, Teil II, Lief. 3, 1907, pi. 48, fig. 15, pi. 51, fig. 14). 

 This species occurs in chains. 



C. vultur Cleve, Kgl. Svenska Vetensk. Akad. Handl. .54, No. 1, 

 Stockholm 1900, p. 15, tab. 7, fig. 5; Jørgensen, 1. c, p. 71, fig. 151. 



The specimens drawn are intermediate between the main species 

 and var. japonicum (B. Schröder) Jørg. (1. c, p. 73, fig. 152) and 

 some come close to the variety. It was found in two-celled chains. 



Ceratocorys horrida Stein, 1. c, tab. VI, figs. 4 — 11. Only one 

 drawing present, which seems to indicate that the species was rare 

 in the Boeton Strait. 



Dinophysis miles Cleve, Öfv. K. Svenska Vetensk. Akad. Forhandl., 

 1900, No. 9, p. 1031, fig. 1 a, b. 



The two forms of this species to which Cleve (1. c.) has 

 already called attention, seem to be well distinguishable from each 

 other, and I prefer to take them as two subspecies. Both were 

 present in the drawings by Dr. Justesen and both occurred in 4- or 

 8-celled colonies. Besides the subsp. Schroeteri was found by me 

 in the sample. The names of the subspecies must be as follows : 



— subsp. Schroeteri (Forti) nob.; syn. Heteroceras Schroeteri 

 A. Forti, Ber. Deutsch, bot. Ges., Bd. 19, Heft 1, 1901, p. 6, figs. I— II; 

 Dinophysis aggregatet Weber-van Bosse, Ann. de Buitenzorg, 2. sér., 

 2, 1901, p. 140, pi. XVII, figs. 3-4; D. miles, f. indica Ostenfeld et 

 Schmidt, 1. c, 1901, p. 170. 



This is the common form in the Malay Archipelago and the 

 Gulf of Siam. 



— subsp. Maris-Rubri (Ostenfeld et Schmidt, 1. c, p. 170, pro 

 forma) nob. 



The common form in the Bed Sea where subsp. Schroeteri does 

 not seem to occur; on the other hand subsp. Maris-Rubri was 

 drawn by Dr. Justesen from Boeton Strait. 



D. pedunculata (Schmidt) nob.; D. homiinculus, f. pedunculata 

 Johs. Schmidt, Botan. Tidskr., 24, 1901, p. 221, fig. 8; D. homiin- 

 culus Okamura, Annot. Zool. Japon., VI, 2, 1907, p. 131, pi. V, 

 fig. 40. 



Both drawn by Dr. Justesen and found by me in the sample. 



There is no doubt that the form which Schmidt (1. c.) took as 

 a variation of D. homiinculus Stein is an independent species. The 

 old D. homiinculus Stein is an aggregate of species, of which the 

 following are known at present: D. homiinculus Stein sens, str., from 

 the Mediterranean and elsewhere; D. tripos Go urr., from the Mediter- 



