174 Bacillarieae, Naviculacese, Navicula. 



tab. 2, f. 2, Navicula Vidovichii Grun. in Wien. Verhandl. 1863, 

 p. 150, t. 13, f. 4! — Major, valvis linearibus, oblongis, 90-125 

 ~ 20-26, medio levissime constrictis, apicibus cuueatis; striis trans- 

 versis validis, 6-6V 2 in 10 u., linea levi margini approximata et 

 area oblonga levi nodulum centralem ambiente interruptis. 



Hab. in fundo maris adriatici ad «Castel Muschio» (Lorenz) ; 

 ad oras Americae foederatae (Lewis). — Var. gailapagensis Cleve On 

 some new or little known Diatoms p. 11, t. III, f. 30 nec Navicula 

 gaiiapagensis Cleve: valvis lineari-oblongis, 50-90-13-21, api- 

 cibus cuneatis,- striis transversis crassiusculis, subparallelis, 8V2 i' 1 

 10 u., in utroque latere rhaphes per areas lineares iuterruptis. Ad 

 insulas Gallapagenses (Exped. Eugenie). 



645. Navicuia aegyptiaca Grev. in Trans. Micr. Soc. 1866, p. 127, ^ 

 t. 12, f. 16-17. — Valvis elongatis, angustis, convexis, 120-150 



a. longis, apicibus ellipticis subacutis, gradatim leniterque medio 

 constrictis, fascia lineari lanceolata costarum brevium latarum in- 

 ter marginem et rhaphen praesente, ad nodulum interrupta, fascia 

 alia costarum ad marginem praesente; costis circiter 4 in 10 u. 



Hab. in stomacho Holothurise ad oras ^Egypti (Baker, 

 Norman). 



646. Navicula Zanardiniana Grun. in Wien. Verhandl. 1860, p. 525, ^ 

 t. I, f. 12, Pinnularia Zanardiniana Rabenh. Fl. Eur. Algar. I, 



p. 219. — Valvis elongatis linearibus, circiter 150 = 16-18, medio 

 leniter constrictis, apicibus cuneatis; costis validis, parallelis vel 

 subparallelis, remotis, 5-5'/2 in 10 p.., sulco longitudinali in utro- 

 que latere uno, leviter undulato interruptis; nodulo centrali me- 

 diocri, oblongo, area oblonga cincto. 



Hab. in mari Adriatico inter Cystoseiras prope «Fiume» 

 (Lorenz). 



647. Navicula Wittii Grun. in Cleve On some new or little known 647 

 Diatoms p. 11, t. III, f. 31. — Naviculce Powellii Lew. proxirna, 

 valvis elliptico-oblongis, medio leniter constrictis, apicibus subcu- 

 neato-rotundatis; striis transversis ter iiiterruptis h. e. fascias 4 

 efficientibus, 8 in 10 u.., vix radiantibus; rhaphe recta. 



Hab. in Brasilia (Grunow). — Naviculcv Zanardiniancu Grun. 

 affinis. 



648. Navicula amica Cleve et Grun. in Cleve On some new or little 64S 

 known Diatoms p. 12, t. III, f. 37. — Valvis medio constrictis, 

 75-23, apicibus cuneatis; striis 7'/ 2 in 10 y.., subparallelis, levi- 

 bus; seriebus 2 interioribus striarum medio interruptis, 



