708 BacillarieEe, Fragilariacese, Rhaphoneis. 



Longius lanceolata, quadranguia, rhomboides, ad 36 pt.. longa, ter 

 longior quam latior, apicibus styliformibus longis; striis transversis 

 granulatis tenuioribus, 7 in 10 a. 



Hab. ad «Richmond» Americse borealis (Ehrenberg). 



44. Rhaphoneis lanceoiata Ehrenb. in Ber. Berl. Akad. 1844, p. 364, 2854 

 Mikrogeol, tab. 34, VII, f. 13. — Rhombeo-lanceolata, ad 40 jj.. 

 longa, apicibus obtusis; striis 8 in 10 p.., area media longitudinali 

 lineari-lanceolata levi. 



Hab. in mari indico (Ehrenberg) ; etiam ad oras sinenses et 

 japonicas (Ehrenberg). 



45. Riiaphoneis Fusus Ehr. in Ber. Berl. Akad. 1844, p. 87. — Te 28.55" 

 nuis, linearis, lanceolata, ad 35 u.. longa, ut plurimum quater semis 

 longior quara latior, apicibus styliformibus ; striis granulatis tenuio- 

 ribus transversis 6-6^2 in 10 ;j.. 



Hab. in Virginia (Ehrenberg). 



46. Rhaphoneis? angusta Ehrenb. in Ber. Berl. Akad. 1844, p. 364. — ^sj 

 Longe lanceolata, ad 34 [j.. longa, apicibus obtusis; striis 9 in 10 

 fjt.., area levi media nuUa. 



Hab. ad oras Indiae, raaritima (Ehrenberg). — Sec. Grunow in 

 Wien. Verhandl. 1862, p. 380, potius Odontidii species. 



47. Rhaphoneis? moluccensis Ehr. in Abh. Berl. Akad. 1869, p. 52. 2857 



— Valvis lanceolatis, 70 u.. longis, levibus, utroque fine attenua- 

 tis, pseudorhaphe (?) duplici, nodulo centrali nullo; striis nullis. 



Hab. viva in Spongilla insulae Bornei (Ehrenberg). 



48. Rhaphoneis? Cocconeis Ehr. in Abh. Berl. Akad. 1869, pag. 52, 2858 

 tab. 2, I, tig. 17. — Valvis ellipticis suborbicularibus, 22 a. latis, 

 striatis, costis (?) 12 in utroque latere, pseudorhaphe subdistincta. 



Hab. fossilis in stratis puteorum mexicanorum (Ehrenberg). 



— Affinis est Rh. indicce Ehr. 



Species mihi solo nomine notse. ^H 



49. Rhaphoneis elliptica Ehr. Mikrogeol. 1856, p. 82 non Castr. 2859 



Hab. in fluviis «Delaware» et « Schuyllkill» in Pennsylyania 

 Americge borealis (Ehrenberg). 



50. Rhaphoneis dissita Ehr. Mikrogeol. p. 333, Pritch. Inf. p. 792. 2860 



Hab. in fluvio «Demerara» GujaucB aiiglicre (Ehrenberg). 



51. Rhaphoneis rhomboides Ehr. Mikrogeol. pag. 132, Pritch. Inf. 2861 

 pag. 792. 



Hab. in aquis dulcibus in regione gangetica Asife (Ehrenberg). 



52. Rhaphoneis rostrata Ehr. Mikrogeol. 1856, p. 71. 2862 



