710 Baclllarieae, fragilariaceae, terebraria. 



71. Rhaphoneis Mooreii 0'Meara in Micr. Journ. 1867, p. 247, t. 7, 

 f. 11, videtur eadem species ac Cocconeis Sculelhc?n. 



72. Rhaphoneis Jonesii 0'Meara in Micr. Journ. 1867, p. 247, t. 7, 

 f. 10 est Cocconeis Scutellum. 



73. Rhaphoneis Harrisonii 0'Meara Ir. Diat. p. 296 est Odontidium 

 Harrisonii. 



74. Rhaphoneis fasciolata Ehr., forte est eadem species ac Campt/lo- 

 neis Grevillei. 



75. Rhaphoneis marginata Grun. est Cocconeis Scutellum. 



76. Rhaphoneis Scutellum Ehr. est Cocconeis Scutellum. 



TEREBRARIA Grev. [1864] in Trans. Micr. Soc. N. Ser. vol. Xll, 

 pag-. 8 (Etym. ierebra). — Frustula e facie connectivali visa qua- 

 drangularia, binatim conjuncta, lateribus biundulata, seriebus trans- 

 versis nodulorum conspicuorum ornata, sutura longitudinali crenu- 

 lata; valvae ellipticte, nodulis transverse seriatis remotis ornatse. 



Obs. Genus incertae sedis, ad Trachyspheniaceas transitum ef- 

 ficiens. 



1. Terebraria barbadensis Grev. in Trans. Micr. Soc. N. Ser. vol. XII, 2875 

 1864, p. 9, t. 2, f. 12-13. — Characteres generis; frustulis circ. 



65 u.. longis, quadrangularibus, utrinque apices versus contractis, 

 lateribus medio tumido-convexis, nodulis (pseudoporis Grlv.) ma- 

 gnis, orbicularibus, distinctis, ex utroque suturse serratse latere 

 circiter 3, seriebus transversis nodulorum in tota valva3 superficie 

 fere 16; valvis elliptico-oblongis, prope apices rotundatos leniter 

 constrictis. 



Tlab. fossilis in depositu barbadensi «Cambridge estate» (C. 

 Johnson). 



Species a genere removenda. 



2. Terebraria kerguelensis 0' Meara videtur Trachyspheniw australi 

 Petit ut varietas adscribenda. 



Familia XIV. Plagiogrammaceae P. Petit. 



Pla(jiofjrammace(B P. Petit [1889] in Pell. Diat. II, 1, p. 80, De-Toni [1890] 

 Osserv. tasson. Bacill. p. 906. 



Valvae ellipticae, plus minus elongatae, granulis margaritaceis trans- 

 verse longitudinaliterque ordinatis ornatae, apicibus levibus (ocellis 

 seu pseudonodulis), raedio area levi v. stauro vel pseudonodulo instru- 



