r EG A ■ E X r E D I T 1 N EN S V ET EX S K A P L I G A AIlBETEN. 500 



* Hyclrocera conipressri Wallich (M. J. Vol. VI, pag. 252, PI. 

 XIII, fig. 7 — 12). The structure of the valve consists of a 

 coarse reticulation of large 5 — 7-gonal cell?, 6 in O.oi mm., 

 and a finer decoration of small puncta arranged in lines radia- 

 ting from the centre. Ends of the valve (in S. V.) destitute 

 of the coarse reticulation. 



Anauhis birosfrafus Grun. (Van Heurck Svn. PI. CIII, fio,'. 

 1-2). 



* Triceratum (arcficum var.?) formosum Btw. (A. Schm. Atl. 

 PI. LXXIX, fig. 2) 3— 6-gonal varieties. 



T. pimdaUuu Btw. (M. J. Vol. IV, pag. 275, PI. XVII, 

 fig. 18). 



'' T. cinnamomeum Grev. (M. J. X. S. Ill, pag. 232, PI. X, fig. 12). 



T. Favus Ehb. 



T. Fentacrinus Wallich (M. J. VI, pag. 249, PI. XII, fig. 

 10—19). 



'' T. elongatum Grun. (A. Schm. Atl. PI. LXXX, fig. 12). 



* T. armatum Pvoper (M. J. II, pag. 283). 



Hemidiscus cnneiformis Wallich (Pritch. Inf. PI. VI, fig. 14 

 and probably Fuoclia CeyJanensis Leuduger pag. 62, PI. VI. 

 fig. 65). 



* AnJacodiscus orientaVts Grev. (T. M. S. XII, pag. 12, PI. 

 II, fig. 6. A. Schm. Atl. PI. XXXIV, fig. 2). 



* B. Beeverice Johns. (Pritch. Inf. pag. 844, PI. VI, fig. 5). 

 This form has been distributed in CI. and Moll. Diat. Xo 278 

 as A. Comberi var. ceylanica Grun., according to the deter- 

 mination of Grunow. I think nevertheless that it may be 

 the A. Beeveria^ of Johns. 



* A. Mocrceanus Grev. (T. M. S. X, pag. 23, PI. II, fig. 4). 

 Coscinodisciis radiatus Ehb. (A. S. Atl. PI. LX, fig. 6 — 7). 

 C. excentrims Ehb. (A. S. Atl. LVIII, fig. 46). 



* C. denarius A. S. (Atl. PI. LVIL fig. 20—21). 



* C. cocconeiformis A. S. (Atl. PI. LVIII, fig. 25—28). 

 C. nitidus Greg. (A. S. Atl. PI. LVIII, fig. 18). 



* C. sp. A. S. Atl. LVII, fig. 32. 



^••- C. suUUis Ehb. (A. S. Atl. PI. LVII, fig, 14). 



=•= C. symmetricus (Grev.?) A. S. (Atl. PI. LVII, fig. 27). 



* Acfinocyclus Ehrenhergii Ralfs (Prit. Inf. p. 834). 



•^ .4. tenelhis Breb. (Donkin M. J. I, pag. 7, PI. I, fig. 16. 

 A. monihformis Ralfs? A. S. X. S. D. Ill, fig. 31). 



* A. snhtdis Greg. 



* Actinoptyclms liexagonus Grun. (A. S. Atl. PI. I, fig. 15). 

 V. fenelJa A. S. 1. c. fig. 16. 



