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



2ns {haltica var.?) mediterranea Grdn. A. D. p. 66. Amphijyrora (PlagiotrA medit. Grux. in Y. H. 

 Syn. Pl. XXII f. 14. 



Marine: Mediterranean Sea (Grun.), Adriatic (Grun.), Samoa (Grun.), Connecticut, Morris Creekl 



Var. scaligera Grun. (1880). — Frnstnle scarcely constricted. L. 0,i to 0,i3; B. 0,o25 to 0,o45 

 mm. The longitudinal band with coarse, transverse ribs. Strise 17 to 18 in 0,oi mm. — Plagiotr. 

 (baltica var.?) scaligera Grun. A. D. p. 66, Pl. V f. 90. 



Marine: Finmark! 



The longitudinal band in this species appears to be subject to great variation. In the type 

 it is always scarcely perceptible; in the varieties, it forms a broad band. — Ann)l)iprora? .9uperba 

 Grev. (Edinb. N. Ph. J. XVIII p. 39 f. 17, 1863) represents probably a large form akin to T. vitrea. 



18. T. seriata Cl. (1892). • — V. in the zonal-view linear, with straight dorsal margin, cur- 

 ved only at the ends, not constricted in the middle, very elevated and distinctly asymmetrir.al. 

 L. 0,4; Height 0, 04 mm. Transverse strise 12 in 0, 01 mm. crossed by several, blank, longitudinal 

 bands. — Cl. Diatomiste I p. 75 Pl. XII f. 2 to 4. 



Marine: Connecticut! Colon! Jamaica! 



This species, evidentty akin to T. elegans, is remarkable for its large size and the peculiar 

 striation; the stritE forming several longitudinal rovps. 



19. T. Zebra Cl. (1892). — V. strongly asymmetrical, lanceolate. L. 0,i8; B. 0,03 mm. 

 Central area indistinct. There is a broad, marginal band on the broader side of the value. Strise 

 5 to 6 in 0,01 mm. inequidistaut, finely punctate, puncta 21 in 0,oi mm. — [Cl. Diatomiste I 

 p. 75 Pl. XII f. 1. 



Brackish v?ater: Newark, N. Jers. fossil from the »Champlain epoch! Brazil, S:t Vincent! 



20. T. samoensis Grev. (1880). — Frustule strongly constricted in the middle. V. in length 

 0,095 to 0,12; B. 0,023 to 0,027 mm. Longitudinal band very obscure. Strise. 16 to 19 in 0, 01 mm. 

 somewhat more distant in the middle, punctate. — Flagiot. samoensis Grun. A. D. p. 67. 



Marine: Samoa (Grun.), West Indies (Grun.). 



21. T. Kinkeriana Cl. N. Sp. — V. strongly asymmetrical, not constricted in the middle. 

 L. 0,2; Height O.osa mm. The broader side of the val ve with a very broad band. Central area 

 small, but distinct. Transverse strite 14, longitudinal 17 in 0,oi mm. — Pl. III f. 1, 2. 



Marine: Sumbava (Kinker CoU.)! 



22. T. lata Cl. N. Sp. — V. not constricted. L. 0,135; Height 0,o35 mm. On the broader 

 side of the valve there is a band interupted in the middle. Transverse striae 18 in 0, 01 mm. 

 punctate; puncta, about 23 in 0,oi mm., forming undulating, longitudinal rows. — Pl. III f. 3, 4. 



Marine: Java, Rembang Bay (Deby CoU.)! 



23. T. recta Greg. (1857). — Frustule rectangular, with rounded angles, slightly constricted 

 in the middle. L. O, os to 0,09; B. 0, 02 to 0,o2s mm. V. strongly inequilateral, without distinct 

 wing. Transverse strite 21 to 24 in 0,oi mm. — Amphipr. recta Greg. T. M. S. Vol. V. p. 76 

 Pl. I f. 40. Flagiotr. recta Grun. Cl. M. D. N:o 310. Amphoropsis recta Gkun. V. H. Syn. Pl. XXII 

 bis f. 9, 10. 



Marine: Firth of Tay! 



Var.? suhplicata Grun. (1880). — L. 0,o5i; B. 0,oi8 mm. Wing obscure. Transverse strise 

 17 in 0,01 mm. — Amphipr. plicata v. subplicata Grun. A. D. p. 65 Pl. V f. 88. 

 Brackish water: Sea of Kära (Grun.). 



24. T. couserta Lewis. (1861). — Frustule membranaceous, rectangular, with rounded 

 angles, slightlj^ constricted in the middle. L. 0,08 to 0, 10; B. 0, 034 to O.04 mm. V. lanceolate 

 Keel with a number of coarse, radiate ribs. — Amphipr. couserta Lewis. Proceed. Ac. Nat. Se. of 

 Philad. 1861, Pl. I f. 5. 



