987 



228 Bacillarieae, Naviculacese, Amphipleura. 



pleura Trubiana Truan 1883: magna, valvis lanceolatis, 160-220 

 /x. longis, apicibus rotundatis obtusisque, rhaphe recta, utrinque ad 

 apices duplicata nodulumque magnurn validum efficiente; rhaphe 

 medio subundulata (vestigium noduli centralis?); striis subtilissimis. 

 In aquis ferrugineis fontis Salutis dictae Trubise (A. Truan). — Sec. 

 Van Heurck forma sporangialis Amphipleurm pellucidce. 



3. Amphipleura Frauenfeldii Grun. in Wien. Verhandl. 1863, p. 144, 

 t. 14, f. 3, Alg. Novara p. 6, Rabenh. Fl. Eur. Algar. I, p. 144. 



— Major, lanceolato-oblonga, 90-150 s 17-28, apicibus obtusiusculis, 

 costis apice et in media parte parum distinctioribus haud nodulosis, 

 striis transversis tenuissimis ultra 24 in 10 u.., longitudinalibus 

 evideutioribus. 



Hab. inter Oscillarias mare indicum prope «Tilanshang» 

 insularum nicobaricarum obtegentes (Frauenpeld, Exped. Novara). 



— Amphipleurce Lindheimeri Grun. quodammodo similis sed va- 

 lidius striata, nodulis terminalibus nullis vel imperspicuis. Videtur 

 eadem ac Navicula fusiformis Grun. quam confer. 



4. Amphipleura Weissflogii Jan. in M. M. J. XVIII, 1877, pag. 180, 988 

 t. 105, f. 14. — Ab Amphipleura pellucida et A. oregonica (quae 

 forte eadem species ac A. maxima) differt valvis exacte linearibus, 

 apicibus rotundatis, 190-250 ;s 12-13; striis 25 in 10 u. 



Hab. fossilis in Oregonia, raro. — Noduli terminales ut in 

 Amphipleura Lindheimeri Grunow. 



5. Amphipleura Schumannii Grun. in M. M. J. 1877, p. 180, Amphi- m 

 pleura sp. Schum. Preuss. Diat. 1867, t. 1, f. 9. — Valvis 180- 

 200 s 14, striis 16 in 10 u., (teste Schumann) e punctis 3 distan- 

 tibus in utroque latere valvae lineas longitudinales crassulas effi- 

 cientibus compositis; striis (ex Grunow e contrario) e punctis nu- 

 merosis minutis constitutis. 



Hab. in mari Baltico (Schumann). 



6. Amphipleura maxima H. L. Smith in Walker et Chase Notes on 990 

 some new and rare Diatoms, Ser. I, p. 2, t. II, f. 5, Notarisia 1886, 



p. 146. — Structura et characteres generici Amphipleurce, val- 

 vis u.. 365 longis; striis 32 in 10 u,. 



Hab. fossilis ad «Klakamas» Oregonioe (H. L. Smith). — Anne 

 Amphipleura oregonica Grun. in M. M. J. 1879, p. 179? 



7. Amphipleura? sicula (Ehr.) Grun. in Wien. Verhandl. 1862, p. 468, 991 

 Surirella sicula Ehr. Mikrogeol. t. XXII, f. 58. — Late lanceo- 

 lata, apicibus rotundatis. 



Hab. fossilis in Sicilia (Ehrenberg). 



