Ifi Algfe, Pacillariese, Pseudoraphidefe, Surirellacese, Surirella. 



1. Homoeocladia filiformis W. Sm., Br. Diai. II, p. 80, t. XLV, f. 348. 51 

 Sauvage, Ann. Sc. geol., IV, 1873, p. 68. — Phycomate filiformi non 

 diviso, simplici, frustulorum seriebus ternis vel quaternis, frustulis 

 linearibus, medio parum dilatatis, utroque fine obtusis; valvis lineari- 

 lanceolatis, subacutis, ad 100 u.. longis, carina centrali punctis di- 

 stinctis. 



In tripoli messiniano «Licata» insulas Sicilice (Sadvage). 



Gen. Hantzschia Grun., in CI. et Gr., Arct. Diat., I8S0, p. 103. 

 Frustula Nitzschice sed valvae insequilaterales, latere dorsuali con- 

 vexo-curvatte, ventrali planae et punctorum serie ornatoe; puncta ca- 

 rinalia (in nonnullis speciebus) in costas prolongata,- cost^e phis minus 

 evolutaB (in Hanfzschia marina totam valvse latitudinem percurren- 

 tes). Facies connectivalis carinas in eodem frustuli latere dispositas 

 ostendens. 



1. Hantzschia marina (Donk) Grun., in CL et Gr., Arct. diat., 1880, 52 

 p. 105. Castrac, Atti Acc. Pont. N. Lincei, 18 Marzo, 1877, p. 245. 

 Epilhe^nia marina Donk., in Traiis. micr. Journ., 0, p. 29, t. III, 

 f. 14. — E mediocribus leviter couvexa, apicibus productis ro3tra- 

 tis; punctis carinalibus in costas eximie prolongatis 4-4, 5 in 10 y..; 

 striis transversis punctatis interpositis. 



In tripoli ad Montes Labronicos Tuscice (Castrac)- 



Fam. SURIRELLACEiE 



Gen. Campylodlscns Ehr., in Berl. Ak., 1841, p. 11. 



Valva3 circulares vel subcirculares, costis validis, plerumque bre- 

 vibus e margine latiusculo ortis ornatae. Frustula curvata vei ephip- 

 piiformia, rarius convoluta, pseudorhaphibus utriusque valvje insimul 

 cruciformis intersectis. 



1. Campylodiscus sp., Castr., Atti Acc. Pont. N. Lincei, 18 Marzo 53 

 1877. p. 245. 



In tripoli ad Montes Labronicos Tuscicv (Castrac). 



Gen. Snrirella Tourp., Mem., 1828, Dict. des Sc. Nat„ p. 508. 



Valvae cuiieiformes, reniformes, ellipticse linearesve, subinde tortse, 

 pseudo-rhaphem iinearem vel lanceolatara pr?ebentes; costis brevibus 

 aut pseudo-rhaplioiii altingentibus et carina submarginali plus minus 



