BacillariecB, Striatellacese. 741 



lantlia^ (Preiss), Africae australioris (Kuetzing), ad Hj^piieam, 

 Laurenciam et algas varias ex insula «Tahiti» (Grunow) et 

 India orientali (IIantzsch). — Huc forte pertinet, suadente Gru- 

 now, ut inera varietas Climacosphenia elongata Bail. 

 4. Climacosphenla maxlma Rabenh. in Hedwigia I, p. 103, t. 13, 2085 

 1". 1. — E inaximi.s, frustulis ad 1 mm. longis, cuneatis, basi trun- 

 cato-rotundatis, apice truncatis, foraminibus ad 18, inferne elli- 

 pticis, superne subcircularibus, dissepimento singulo, 



Hab. ad H y p n e a m s p i c i f e r a m et L a u r e n c i a m fl e x u o • 

 sam ad Caput «Agulhas» Africae australis. 



Pamilia XVL Striatellacese (Kuetz.) Heib. 



Slriatellacece Kuetz. [1844] Bacill. p. 124, Heib. [1863] Consp. p. 2i (genuince). 



De Toni [1890] Osserv. tasson. Bacill. p. 907. 

 Tabellarieue Kuetz. [1844] Bacill. p. 126, Trev. [184S] Alg. cocotalle p. 95, 



Pant. [1889] Foss. Bacill. Un^. 11, p. 67, ex parte. 



Valvse (et zonae connectivales) secus axin et longitudinalem et 

 transversalem symmetricae; cellulae (frustula) rectae, lateribus zonae 

 connectivalis rectangulis,- valvce ellipticaj vel lineares, medio saepe 

 ventricoste, septis interioribus 2 vel pluribus semel vel pluries inter- 

 ruptis, lateribus valvae parallelis instructae. 



Pha^ophora granuliformia, numerosa. 



Conspectus Generum 



I. Genera ad floram aqiuB dulcis pertiaentia vel fossilia. 



A) Dissepiraenta parietalia tantum 2 in unoquoque (Vustulo ((3fi'. TaOella- 



riam fenestratam). 

 Diatomella Grev. — Dissepimenta ter perforata. Valvse nodulo centrali sub- 

 distincto siepius instructce; costa? nulla?. 



B) Dissepimenta parietalia plura in unoquoque frustulo (Ctr. Tabellariam 



Ehrenb.). 

 Tabellaria Ehr. — P^rustula catenas solutas efformantia. Gostae nulle. 

 Telracyclus Ralfs. — Frustula plerumque in fascias plus miaus lon^^as conjun- 



cta; valv^e subcruciformes, costis perviis instructae, nodulis nullis. 

 Stylobihlium Ehr. — Frustula cylindrica; valvae orbiculares, costata) (Geniis 



fossile). 

 "? Castracania De-Toni [Salacia Pant. non alior.). — Frustula rectangula, in 



fascias compressas conjuncta, valvse elliptico-lanceolatae , dissepimentis 



transversis numerosis percursse (Genus fossile). 



