AlgEB, BacillarieEe, Pseudorhaphidese, Eunotiacese, Ceratoneis, 23 



Boll. Soc. geol. it., I, 1882, p. 2. — Anguste laaceolata, utrinque 

 sensimque attenuata, acuta, striata. 



In marga calcarea alba ((Caltanisetta » insulae Sicilice (EHR.);in 

 tripoli messiniano «Licata» insula? Sicilice {^HK.), Qt in scliisto si- 

 liceo tortoniano ((Messina» iiisulae Sicilim (^iCOTKk)' — Icon imper- 

 fecta minus parum docet an genuina Eunotice species sit, ergo compa- 

 randa figura Ehrembergii. 



Gen. Pseudoeunotla Grun., in V. H., Syn., tab , XXXV. 



Characteres Eunotice sed valwe nodulis terminalibus et pseudo- 

 rhaphe destitutaB, 



1, Pseudoeunotia Doliolus (Wall.) Grun., in V. H., Syn., t. XXXV, 74 

 f. 22. De Toni, Syll- Alg., II, p. 810. Synedra Doliolus Wallich., 

 in Tr. Mikrog, Soc, 1860, p. 48, t. II, f. 19; Castrac, I trip. mar. 

 d. valle Metaur., p. 5. — Valvis sublanceolatis parum arcuatis mar- 

 gine inferiore plano leniterve convexo, superiore magis convexo, api- 

 cibus obtusiusculis haud productis, striis transversis 9-11 in 10 f/.. 

 frustulis e facie connectivali visis apices versus attenuatis, plerum- 

 que quaternatim conjunctis. 



In tripoli loci dicti «Tombolina» vallis Metaurensis in agro 

 Umbro (Castrac). 



Gen. Ceratoneis Ehr., Kreid., t, IV, 



Valvae arcuataB quasi eunotiaeformes, nodulis terminalibus distinctis, 

 centrali annuliformi, subdistincto, pseudorhaphe margini concavo ma- 

 xime approximata, frustula libera (raro cohaerentia) e facie conne- 

 ctivali visa linearia. 



1. ?Ceratoneis cretaB P]hr., Berl. Ak., 1844, p, 77; Mikrog., t. XXII, 75 

 f. 61. Kuetz., Sp. Alg,, p. 88. De Toni, Syll. Alg., II, p, 814. — 

 Levis, navicularis, medio levissime constricta, complanata; apicibus 

 acutis, rectis non eximie productis. 



In marga calcarea alba « Caltanisetta » insulae Sicilice (Ehr.). 

 — Ex icone nulla Ceraioneis ! 



