Bacillarieae, Naviculaceae, Mastogloia. 323 



u. longa, gracilis, spatiis hyalinis dupliciter curvatis; striis circi- 

 ter 23-24 in 10 u. 



38. Mastogloia bisuicata Grun. in M. M. J. XVIII, 1877, pag. 176, 1283 

 t. 195, f. 6. — Miuuta; valvis late ovato-lanceolatis, 17-30 <■ 9-11, 

 polis parum productis, obtusis, loculis latiusculis, aaqualibus, 5-6 



in 10 y..; striis subradiantibus, subtiliter punctatis, 10 l / 2 in 10 jj.., 

 utrinque area levi lineari-lanceolata subarcuata interruptis; rhaphe 

 undulata, nodulo centrali parvo. 



Hab. in mari ad oras «Honduras». — Maslogloice minutce 

 Grev. similis, quae socia occurrit sed areis levibus utrinque dif- 

 fert. — Var. corsicana Grun. in V. H. S. t. 4, f. 28. 



39. Mastogloia? Temperei Cleve in Diatomiste 1890, n. 2, pag. 23, 1284 

 t. 3, f, 3. — Valvis latiuscule lanceolatis, 110*40, apicibus sub- 

 acutis; striis 10 iu 10 u., granulatis (granulis circ. 10 in 10 u.), 



e medio valvse sensim sensimque radiantibus, in utroque latere de- 

 pressione (strias e puuctis elongatis, series longitudinales subun- 

 dulatas efticientibus constitutas prsebente) interruptis; rhaphe me- 

 dio undulata, inter centrum et apices valva3 zona angusta cincta. 

 Hab. fossilis in calcaria Japonise. — Loculamenta marginalia 

 uon visa. 

 10. Mastogloia Macdonaldii Grev. Diat. South Pacif. III, p. 237, t. 3, 1285 

 fig. 15. — Valvis elliptico-rhomboideis, ad 60 u. longis, apicibus 

 acutis; loculis remotis, 10-12, lineis in utroque latere duabus in- 

 ter loculos et rhaphen praesentibus marginibusque parallelis, me- 

 dio constrictulis stauroque lato conjunctis. 



Hab. intra stomacha Ascidiarum ad «Shark' s Bay » Au- 

 straliae (Macdonald). 



41. Mastogloia interrupta Hantzsch Diat. aus Ostind. Archip. p. 20, 1286 

 tab. 6, f. 5, Rabenh. Alg. Eur. sub n. 1403, Grun. Alg. Novara 

 [>ag. 16. — Valvis lanceolato-rhomboideis, 72 * 22, apice abrupte 

 productis, apiculo obtuso; laminis marginalibus trausverse striatis, 

 striis rhaphen non attingentibus et circa eam aream nudam irregula- 

 rem medio latiorem linquentibus, rhaphe irregulariter incurva, no- 

 dulo centrali oblongo. 



Hab. in archipelago Indico-orientali (Hantzsch), ad Sargassa 

 ex insulis Nicobaricis (Grunow). 



42. Mastogloia quinquecostata Grun. in Wien. Verhandl. 1860, p. 578, 1287 

 t. 5, f. 8, Alg. Novara p. 16, Rabenh. Fl. Eur. Algar. I, p. 262, 

 Hantzsch in Rabenh. Beitr. I, p. 20, t. VI, f. 6. — Major, valvis 

 rhombeo-lauceolatis, 60-90 * 25-30, nodulo centrali parvo, sulcis 



