34 P. T. CLEVE, SYNOPSIS OF THE NAVICULOID DIATOMS. 



lineate and crossed by an infra-marginal lateral area. V. in the zonal view slightly constricted 

 in the middle with broad, obliquely truncate ends. Striee crossed by a broad lateral area. — 

 D. espéces N. p. 38 Pl. XV f. 4. 



Marine: Japan, fossil (Brun.). 



84. N. (Alloioneis) Titriscala Beun (1891). — V. narrow, fusiform, acute, very convex. 

 L. 0.2 to 0,22; B. 0,015 to 0.022 mm. Median line slightly nndulating; terminal nodules distant. 

 Axial and central areas uniting in a narrow, lanceolate space. Striee fragmentary, finely lineate. 

 V. in zonal view broad, not constricted in the middle, with obliquely truncate ends, where are 

 large terminal areas, having in their centre a stigma. Along the interiör margin is a band of 

 parallel not interrupted strise (14 in 0, 01 mm.) outside which the strise are fragmentary. — 

 D. esp. n. p. 41 Pl. XV f. 5. 



Marine: Japan, fossil! 



85. N. superimpOvSita A. S. (1874). — V. lanceolate (occasionally with slightly undulated 

 margins) with obtuse ends. L. O, oss to 0,125; B. 0, 012 to 0,oi8 mm. Terminal nodules distant. 

 Axial area narrow; central area large, quadrate. Strise 5,5 to 7 in 0, 01 mm., finely lineate, slightly 

 radiate and crossed by a longitudinal area. — N. S. D. p. 90 Pl. II f. 34. Atl. XL VI f. 61. 

 Perag. D. de Villefr. p. 53 Pl. III f. 29? 



Marine: Baltic (A. S.), Norway! Morocco! China! 



86. N. Sigma Brun (1891). — V. very convex, lanceolate, sigmoid, with obtuse ends. L. 

 0,12 to 0,17; B. 0,03 to 0,035 mm. Axial area narrow, linear; central area large, quadrate. Median 

 line with approximate central pores and distant terminal nodules. Striee 6 in 0, 01 mm., slightly 

 radiate, coarsely lineate (lineolse 17 in 0,oi mm.), crossed by a lateral area. V. in zonal view 

 broad, with obliquely truncate ends, slightly constricted middle, and with a very broad lateral 

 area. — D. espéces n. p. 39 Pl. XVI f. 5. 



Marine: Gulf of Naples! Messina (Brun), Athens (Brun). 



87. N. Phi Cl. N. Sp. — V. convex, narrow, lanceolate, obtuse. L. O, os; B. 0, 015 mm. 

 Axial area narrow, unilateral; central area large, uniting with the lateral areas. Median line 

 with somewhat distant central pores and comma-like terminal fissures. Strise 10 in 0, 01 mm., 

 radiate throughout, coarsely lineate; lineolse 24 in 0,oi mm. The strise are crossed on each side 

 of the median line by a moderately broad, linear lateral area and probably also by another infra- 

 marginal area. — Pl. I f. 34. 



Marine: Seychelles (V. H. CoU.)! 



This species is very similar to Caloneis hiseriata Petit, which has smooth strise. 



88. N. Galea Brun (1891). — V. broadly elliptical, with rostrate ends, convex. L. 0,0 6 to 

 to 0,075; B. 0,03 to 0,035 mm. Median line with approximate central pores and somewhat distant 

 terminal nodules. Axial area narrow; central area large, quadrate, uniting with the lateral 

 areas. Strise 7 in 0,oi mm. slightly radiate throughout, coarsely lineate and crossed by broad, 

 linear, lateral areas. — D. espéces n. p. 34 Pl. XVI f. 7. 



Marine: Grulf of Naples! Palermo. Tangier, Arzila (Brun). 



89. N. giittata G-run. (1878). — V. very convex with conical ends, elliptic-lanceolate, 

 obtuse. L. 0,05 7 to 0,06; B. 0,011 to 0,oi4 mm. Median pores approximate. Axial area iiidistinct; 

 central area large, somewhat transverse and quadrate. Strire 7 to 8 in 0,oi mm. .slightly radiate, 

 crossed by 3 to 4, irregularly undulating, narrow lateral areas, so that they have the appearance 

 of being composed of 3 to 4 elongated large puncta. Lineation of the strise fine. — Cl. M. D. 

 N:o 154 to 155. A. S. Atl. XLVl f. 10 (without name). 



Marine: Balearic Islands! Sansego (Atl.). 



( 



