Bacillariece, Cocconeidaceie, Orthoneis. 467 



pag. 57, Orthoneis splendida (Greg.) Grun. Alg. Novara p. 15, 

 M. T. P. 2, 4, 8, V. H. S. t. 28, f. 1-2, T. n. 240, J. Q. M. C. 

 1887, p. 72, Truan Diat Astur. p. 57, t. 4, f. 20, Cocconeis splen- 

 dida Greg. Diat. of the Clyde p. 21, t. 1, f. 29, Rabenh. Fl. Eur. 

 Alg. I, p. 102, Cocconeis puncialissima Grev. in Micr. Journ. III, 

 t. 1, f. 1, Mastogloia cribrosa Grun. in Wien. Verhandl. 1860 

 ex parte, t. 7, f. 10 a-b (non c nec d) [rhaphe nodulusque centralis 

 raale figurati]. — E maximis, 110^98-100, late elliptica, utroque 

 polo rotundata, late rnarginata; striis transversalibus leniter cur- 

 vatis. elegantissime moniliformibus, circ. 6 in 10 ij.. 



Hab. in «Lamlash Bay » Scotiae (Gregory); ad Cladophoram 

 proliferam in mari mediterraneo, frequenter (Grunow); ad Al- 

 gas e «Gibraltar et Madeira» (Exped. Novara) ; ad oras Hispanise 

 (Truan y Luard); fossilis in Hungaria (Pantocsek). — Valvse 

 utraeque consirniles, haud arcuatae, nodulo centrali praeditae. Fru- 

 stula, ut in Masiogloia, singula vel bina intra mucosum tegumen- 

 tum ob venientia. — Forma minor Lagerst: 1. c: valvis 42-58 s 

 27-38, striis transversis 10 l / 2 -12 in 10 u.. Ad « Fiskebackskil » 

 Bahusiae. 



5. Orthoneis Horvathiana Grun. Alg. Novara pag. 16, Mastogloia 1911 

 Horoathiana Grun. in Wien. Verhandl. 1860, p. 578, t. 7, f. 13. 



— Parva; valvis late ovalibus, 33 « 24, nodulo centrali parvulo or- 

 bicnlari; striis transversis decussatisque, 14-16 in 10 <j.., costis 

 abbreviatis, circ. 4 l / 2 in 10 </.., totum valvae circuitum ambientibus. 

 Hab. ad Algas in mari rubro (Horvath). — Orthoneidi cri- 

 brosce Grun. proxime accedens, differt structura tenuiori, costis 

 aequicrassis, semper distinctis. 



6. Orthoneis barbadensis (Grev.) Grun. Alg. Novara p. 98, Cocco- 1912 

 neis barbadensis Grev. in T. M. S. 1864, pag. 14, tab. II, f. 10, 



J. Q. C. 1866 p. 3 32. — Valvis circularibus vel fere circularibus, 

 80 ". circ. diam., punctatis; rhaphe lineari, attenuata ; punctis 

 minutis, lineas apices versus convergentes in utroque Iatere lineas 

 sese intersecantes efficientibus ; margine angustiusculo, grosse 

 striato. 



Hab. fossilis in deposito barbadensi « Cambridge estate » (C. 

 Johnson). — Area media hyalina, transverse oblonga. — Var. nan- 

 koorensis Grun. Alg. Novara pag. 98, t. 1 A, f. 10: minor, elli- 

 ptica, angustior, 40 ^ 25, punctis prope rhaphen in utroque latere 

 lineas arcuatas efficientibus. In «Polycystineen-Gestein » ex « Nan- 

 koori » (rarissime). 



