Bacillariex', Fragilariaceie, Fragilaria. 087 



Ilab. fossiiis e stratis deserti ad lacuni salsinn «Utali» Aine- 

 iic:e borealis (Ehrenberg). 



21. Fragllaria Newberryi Ehrenb. Felsbild. i'.acill. in California 1870, 2727 

 p. 50, t. 3, I, f. 12. — Frustulis 3-catenatis, oblongis, ad 30 a. 

 loiigis, trinodibus, levibus, inedia parte oblonga luajore, terininali- 

 bus utrinque subglobosis. 



Hab. in stratis prope «Truckee River» territorii nevadeasis 

 (Ehrenberg). — An hujus generis? 



22. Fragilarla Castracanei De-Toni, Fragilaria antarciica Castrac. 2728 

 Diat. Challenger p. 50, t. 25, fig. 12, Notarisia 1889, p. 086 non 

 Schwartz. — Frustulis seriatiin dispositis; valvis plus minus sub- 

 curvatis, transverse raro plicatis, inter plicas duplici punctulorum 

 ordine instructis; punctulis invicem alternantibus. 



Hab. in mari antarctico, passiin (Exped. Challenger). 



23. Fragiiarla linearis Castrac. Diat. Challenger pag. 56, t. 19, f. 9, 2729 

 Notarisia 1889, p. 686. — E maxiinis; valvis linearibus, 52 :s S (ex 

 icone), transverse striatis, apicibus rotundatis. 



Kab. in mari antarctico (Exped. Challenger). 



24. Fragllarla maxlma 0'Meara Ir. Diat. pag. 283, t. 27, f. 16. — 2730 

 Frustulis magnis; valvis medio valde expansis, apices rotundatos 

 versus gradatim attenuutis ; striis subtilibus, persistentibus. 



llab. in aquis dulcibus ad « Aghold, Co. Wicklow» Hiberni?e. 



25. Fragllarla elliptlca Schum. Preuss. Diat. 1867, p. 52, t. 1, f. 5, V. 2731 

 H. Syn. t. 45, f. 15-17. — E minimis; valvis ellipticis; striis granu- 

 latis, 10-11 in 10 p.., interruptis, pseudorhaphe plus minus con- 

 spicua. 



Hab. in aquis dulcibus Borussicie et raontium Tatricorum (ScHU- 



MANN). 



26. Fragllarla Lancettula Schum. Preuss. Diat. 1867, pag. 52, t, 1, 2732 

 f. 4, V. H. Syn. t. 45, f. 20. — E minoribus; valvis late lanceo- 

 latis; striis granulatis (granulis 4-5), interruptis, circ. 10 in 10 a., 

 pseudorhaphe angusta. 



Hab. in Borussia (Schumann). 



27. Fragllaria stauroneidea Schum. Preuss. Diat. 1864, p. 17, t. 2, 2733 

 f. 7. — Valvis elliptico-lanceolatis, 10-12 a. longis, apicibus con- 

 strictis, productis, striolis circiter 16 in 10 y.., medio absentibus 



et tunc pbeudostaurum efficientibus, pseudorhaphe lineari. 



Hab. in marga calcarea Borussiae. — « An revera Fragi- 

 laria? ». 



